Zharoznizhuvalny for children is recognized as a pediatrician. Allegedly, there are situations of inconvenient help for feverish women, if the children are in need of giving innocently. Todi dad take on the versatility and constipation of fever-lowering drugs. How can you give children a breast? How can you beat the temperature of older children? What are the best ones?
Make sure you include a row of XML. Instead of repeating it in the skin butt, put a whole row in the file, which is included in the skin butt. The row is set at the offensive butt. Last but not least, you can open an XML document and read it with its functionality simplexml_load_file ().
Application # 1 File example.php with a row of XML
$ xmlstr =<<
tse scripting mova? All open up in a whole documentary film,
similar to film zhakhiv.
XML;
?>
SimpleXML is simpler! Try to type a number of rows from the underlying XML document.
Butt # 2 Otrimannya part of the document
include "example.php";
echo $ movies -> movie [0] -> plot;
?>
Otzhe, tse mova. Tse all one Mova programuvannya. Chi tse script mova? Everything will open up in a whole documentary film, similar to the film zhakhiv.
In PHP, you can restore access to an element in XML documents, so that you can take advantage of the inadmissible symbols (for example, a hyphen) by placing this element at the shape of the arch and apostrophes.
Butt # 3 Otrimannya Row
include "example.php";
echo $ movies -> movie -> ("great-lines") -> line;
?>
The result of the vikonannya tsyogo butt:
PHP shows all my problems on the Internet
Application # 4 Access to non-unique SimpleXML elements
As long as there is a small number of copies of daughter elements in one Batkiv element, then it is necessary to use standard methods of iteration.
include "example.php";
$ movies = new SimpleXMLElement ($ xmlstr);
/ * For skin node
foreach ($ movies -> movie -> characters -> character as $ character) (
echo $ character -> name, "graє", $ character -> actor, PHP_EOL;
}
?>
The result of the vikonannya tsyogo butt:
Ms. Coder Graє Onlivia Actora Mr. Coder graє El ActÓr
Respect:
Power ( $ movies-> movie at the front butt) not є by arrays. Tse ob'єkt, scho іterєatsya, at the viglyadі array.
Butt # 5 Vikoristannya Attributes
Dossi mi lishe were given the name of the meaning of the elements. SimpleXML can also render access to element attributes. You can trim access to the attribute of an element in the same way as before elements in the array ( array).
include "example.php";
$ movies = new SimpleXMLElement ($ xmlstr);
/ * Access to the university
* So the scale of assessments itself is vived. * /
foreach ($ movies -> movie [0] -> rating as $ rating) (
switch ((string) $ rating ["type"]) ( // Otrimannya attributes of the element for the index
case "thumbs":
echo $ rating, "thumbs up";
break;
case "stars":
echo $ rating, "stars";
break;
}
}
?>
The result of the vikonannya tsyogo butt:
7 thumbs up5 stars
Butt # 6 Correction of elements and attributes with text
To adjust the element, either an attribute in a row, or to transfer it to a function like a text, it is necessary to bring it to a row, (string)... In this vipad, PHP will look at the yak object.
include "example.php";
$ movies = new SimpleXMLElement ($ xmlstr);
if ((string) $ movies -> movie -> title == "PHP: The Parser Appears") {
print "My Love Films.";
}
echo htmlentities ((string) $ movies -> movie -> title);
?>
The result of the vikonannya tsyogo butt:
My love film. PHP: Parser Appearance
Stock # 7 Porivnyannya two elements
Two elements of SimpleXMLElements vvazayutsya different, navit if the stench vazuyut on the same object, repaired with PHP 5.2.0.
include "example.php";
$ movies1 = new SimpleXMLElement ($ xmlstr);
$ movies2 = new SimpleXMLElement ($ xmlstr);
var_dump ($ movies1 == $ movies2); // false with PHP 5.2.0
?>
The result of the vikonannya tsyogo butt:
Butt # 8 Vikoristannya XPath
SimpleXML includes an XPath widget. Poshuk usih elements
include "example.php";
$ movies = new SimpleXMLElement ($ xmlstr);
foreach ($ movies -> xpath ("// character") as $ character) (
echo $ character -> name, "graє", $ character -> actor, PHP_EOL;
}
?>
"// serve yak pattern. For an absolute route, omit one of the sideways rice.
The result of the vikonannya tsyogo butt:
Ms. Coder Graє Onlivia Actora Mr. Coder graє by El ActÓr
Butt # 9 Set value
SimpleXML's dues are not necessarily guilty, but they are not. Ob'єkt allows the manipulation of all elements.
include "example.php";
$ movies = new SimpleXMLElement ($ xmlstr);
$ movies -> movie [0] -> characters -> character [0] -> name = "Miss Coder";
echo $ movies -> asXML ();
?>
The result of the vikonannya tsyogo butt:
Butt # 10 Adding elements and attributes
Fixable with PHP 5.1.3, SimpleXML can easily add daughter elements and attributes.
include "example.php";
$ movies = new SimpleXMLElement ($ xmlstr);
$ character = $ movies -> movie [0] -> characters -> addChild ("character");
$ character -> addChild ("name", "Mr. Parser");
$ character -> addChild ("actor", "John Doe");
$ rating = $ movies -> movie [0] -> addChild ("rating", "PG");
$ rating -> addAttribute ("type", "mpaa");
echo $ movies -> asXML ();
?>
The result of the vikonannya tsyogo butt:
Butt # 11 Vzaєmodiya s DOM
PHP can convert XML from SimpleXML to DOM and Navpacks. Let me show you the butt, how you can change the DOM element from SimpleXML.
$ dom = new DOMDocument;
$ dom -> loadXML ( "
if (! $ dom) (
echo "Pardon when sorting a document";
exit;
}
$ books = simplexml_import_dom ($ dom);
echo $ books -> book [0] -> title;
?>
The result of the vikonannya tsyogo butt:
4 years ago
Tse є a spilny "trick", which is a conjugation of the SimpleXML object to an array, kerovanny them through json_encode () and json_decode (). I'd like to explain why this is a bad idea.
More simple, because the whole point of SimpleXML is to be easier to use and more powerful than a plain array. For instance, you can editbar -> baz ["bing"]?> and it means the same thing asbar [0] -> baz [0] ["bing"]? and if you writebar [0] -> baz [0]?> You can print all string content of that node - including CDATA sections - regardless of whether it also ha child elements or atributes. You can also get access to namespace information, go to edits straight to XML, and navigate to import into the DOM object for more work. All the same object into array rather than reading understanding the examples on this page.
Dodatkovo, for that it is not broken up for a whole purpose, the conversion to JSON and back will actually use the information in some types. For a supplement, be it an element or signs in the namespace will be a sutta but it will be publicized, and be it a text will be seen, like an element, such that there may be children or attributes. The day's hour, tse will be mater, ale, you see, in the middle of reconverting everything, eat it up, keep going until you go.
In the course of the course, you can speed up the smarter convertition, as you approve the interchange, but if you don’t install SimpleXML at all, you need to use the advanced XML structure for functions, for example XMLReader or your own XMLReader structure. Due to the unnecessary functionality of SimpleXML, a little loss.
2 years ago
Since your xml string contains booleans of descriptions from "0" and "1", you will be a problem if you cast element directly to bool:
$ xmlstr =<<
XML;
$ values = new SimpleXMLElement ($ xmlstr);
$ truevalue = (bool) $ values-> truevalue; // true
$ falsevalue = (bool) $ values-> falsevalue; // also true!
Instead you need to cast to string or int first:
$ truevalue = (bool) (int) $ values-> truevalue; // true
$ falsevalue = (bool) (int) $ values-> falsevalue; // false
9 rockiv to that
If you want to edit the correct xml for your display, you cannot trim your profile instead of the xml to the add-on before entering the asXML () result:
$ xml = simplexml_load_file ("...");
...
... xml stuff
...
// output xml in your response:
header ("Content-Type: text / xml");
echo $ xml -> asXML ();
?>
9 rockiv to that
From the README file:
SimpleXML є method to edit access to XML data.
SimpleXML objects follow four basic rules:
1) properties denote element iterators
2) numeric indices denote elements
3) non numeric indices denote attributes
4) string conversion allows to access TEXT data
As soon as there is power, the stench is going on and more
all nodes with that element name. Thus method children () must be
called to iterate over subnodes. Ale is also afraid of the price:
foreach ($ obj-> node_name yak $ elem) (
// do something with $ elem
}
all results in an iteration of "node_name" elements. So no further
check is needed to distinguish the number of nodes of that type.
When an elements TEXT data is being accessed through a property
Results do not include TEXT data of subelements.
Known issues
============
Due to engine problems it is currently not possible to access
a subelement by index 0: $ object-> property.
8 rockyv that
Vikoristovuyuchi is beginning to value: is_object ($ xml-> module-> admin) for converting, if є with the number "admin", you can’t do the work, as expected, since simplexml can be updated as well, if it’s empty one - even if a particular node does not іsnuє.
For me old empty () function seems to be robotic just fine in such cases.
8 rockyv that
Quick tip on xpath queries and default namespaces. It looks like the XML-system behind SimpleXML has the same workings as I believe the XML-system .NET uses: when one needs to address something in the default namespace, one will have to declare the namespace using registerXPathNamespace and then address thetherwise in default namespace living element.
$ string =<<
I know that's the answer - ale what's the question?
XML;
$ xml = simplexml_load_string ($ string);
$ xml -> registerXPathNamespace ("def", "http://www.w3.org/2005/Atom");
$ nodes = $ xml -> xpath ("// def: document / def: title");
?>
9 rockiv to that
Since SimpleXMLElement claims to be iterable, you can't implement the standard iterator interface functions like :: next and :: reset properly. Be aware, if the robots were running (), the functions, like next (), current (), or all (), like the next (), current (), or all (), like the robot, like you will expect - then, if the system is not safe, you will move or get reset.
6 rockiv to that
The code for XML document is rendered as UTF-8, but the code is exposed as version = "..." and before standalone = "...". Tse vimoga to the XML standard.
I am told XML-document differs from UTF-8. The shown occasionally guilty prodovzhuvatisya once written version = "..." and up to standalone = "...". Tsey vimoga є XML standard.
Ok
Lack of pardon: The unworthy visnovok "Exception" with message "...
Parsing XML by essence means going through the XML document and turning over the data. I want everything more number Web services rotate data in JSON format, but still more and more XML, it is important to learn parsing XML, if you want to learn the whole range of available API interfaces.
Vikoristovuchi expansion SimpleXML With PHP, as was added in PHP 5.0, handling XML is as easy as it gets. At the top of the article, I will show you how it works.
Basics of vikorystannya
Let's take a quick butt languages.xml:
>
>
>
>
Tsei XML-document to list the list of programs of the program with the information about the skin translation: rik її realizatsії and im'ya її creator.
The first croc polyagaє in the locked XML with the victorious functions abo simplexml_load_file (), abo simplexml_load_string ()... You can see the name of the function, you can add the XML to the file, and the other is to add the XML to the file.
Offset functions Read the whole DOM tree for a guess and rotate the object SimpleXMLElement... At the pointed sight, the object is taken into the change in $ languages. You can vikoristovuvati functions var_dump () abo print_r (), just make a report on the information about the turns of the object, if you want.
SimpleXMLElement Object
[lang] => Array
[0] => SimpleXMLElement Object
[@attributes] => Array
[name] => C
[appeared] => 1972
[creator] => Dennis Ritchie
[1] => SimpleXMLElement Object
[@attributes] => Array
[name] => PHP
[appeared] => 1995
[creator] => Rasmus Lerdorf
[2] => SimpleXMLElement Object
[@attributes] => Array
[name] => Java
[appeared] => 1995
[creator] => James Gosling
)
)
Tsey XML revenge the root element languages, in the middle of which there are three elements lang. Leather element to an array of views lang for XML documents.
You can provide access to the authority of the object for the help of the operator -> ... For example, $ languages-> lang will turn you the SimpleXMLElement object, which will show the first element lang... Tsey ob'єkt to take revenge on the two authorities: appeared and creator.
$ languages -> lang [0] -> appeared;
$ languages -> lang [0] -> creator;
Displaying a list of movs and showing their power on the screen can be much easier with the help of a standard cycle, such as foreach.
foreach ($ languages -> lang as $ lang) (
printf (
""
,
$ lang ["name"],
$ lang -> appeared,
$ lang -> creator
)
;
}
Beast of respect, as I have removed access to the imeni attribute of the lang element, I will call it movi. With this rank, you can edit access to any attribute of the element represented in the view of the SimpleXMLElement object.
Robot in the vastness of imen
It’s an hour of robotics from the XML of the latest web services, and you will repeatedly visit the vastness of the elements. Let's take our languages.xml, show the butt of the vicoristannya to the vastness of the name:
xmlns: dc =>
>
>
>
>
Now element creator take revenge in the vastness of the men dc I will book it at http://purl.org/dc/elements/1.1/. As soon as you try to decipher the creators of the move, our first code is victorious, it’s not right. In order to read the vastness of the elements, you need to pick one of the next steps.
The first pidhid polyagaє at the victorian name of the URI is not in the middle at the code, if the animal is up to the vastness of the name of the element. At the offensive butt, it is shown how to aim:
$ dc = $ languages -> lang [1] -> children ( "http://purl.org/dc/elements/1.1/")
;
echo $ dc -> creator;
Method children () take the space of the name and turn the daughter elements, which are repaired from the prefix. I accept two arguments, which are the first in the vastness of XML names, and another optional argument, such as for the names of the roads false... Another argument is set as TRUE, the space of the name is displayed as the prefix. FALSE, space of names will be displayed as space of names of URL.
Another sign of the field is in the reading of the names of the URI from the document, which is the registration of the names of the elements. For the best way to access the items, you are not guilty of being tied to a URI.
$ namespaces = $ languages -> getNamespaces (true);
$ dc = $ languages -> lang [1] -> children ($ namespaces ["dc"]);
echo $ dc -> creator;
Method GetNamespaces () rotate the array of names of prefixes and assign URIs to them. Win is an additional parameter, which is for the used roads false... Yaksho vi stand up yogo yak true, then the whole method of turning around the name, how to become victorious in Batkiv and daughter universities. In іnshomu vypadku, I know the vastness of the men, as vikoristovyutsya deprivation in the Batkiv university.
Now you can go through the list of movs with the following rank:
$ languages = simplexml_load_file ("languages.xml");
$ ns = $ languages -> getNamespaces (true);
foreach ($ languages -> lang as $ lang) (
$ dc = $ lang -> children ($ ns ["dc"]);
printf (
"
% s has appeared at% d and% s has shut it down.
" ,$ lang ["name"],
$ lang -> appeared,
$ dc -> creator
) ;
}
Practical butt - Parsing video channel from YouTube
Let's take a look at the butt, which will display the RSS-feed from the YouTube channel that will display all the videos. For all, it is necessary to turn for the offensive address:
http://gdata.youtube.com/feeds/api/users/xxx/uploads
URL rotated the list of remaining video channels in XML format. I will be able to steam XML and accept information for the skin video:
- Possibility of video
- Miniature
- Name
For a joke, the XML is tampered with:
$ channel = "Іm'ya_channel";
$ url = "http://gdata.youtube.com/feeds/api/users/"... $ channel. "/ uploads";
$ xml = file_get_contents ($ url);
$ feed = simplexml_load_string ($ xml);
$ ns = $ feed -> getNameSpaces (true);
Yaksho vi marvel at the XML-feed, you can poach, there є kіlka elements entity, I will report on specific video from the channel. Ale mi vikoristovuєmo deprive the miniature of the image, I will name the address of the video. Three elements є element sites group, like, at his own devil, є daughter for entry:
…
…
…
>
…
We just walk through all the elements entry, and cutaneous information from them is vital. To brutalize respect, scho player, thumbnailі title to be located in the open space of the media. In such a rank, mi maєmo dyati, yak at the front butt. We will recognize the name of the document and the vikoristic space of the name when it is turned to elements.
foreach ($ feed -> entry as $ entry) (
$ group = $ entry -> children ($ ns ["media"]);
$ group = $ group -> group;
$ thumbnail_attrs = $ group -> thumbnail [1] -> attributes ();
$ image = $ thumbnail_attrs ["url"];
$ player = $ group -> player -> attributes ();
$ link = $ player ["url"];
$ title = $ group -> title;
printf ( "
$ player, $ image, $ title);
}
Visnovok
Now, if you know, yak vikoristovuvati SimpleXML To analyze XML data, you can customize your tweaks by analyzing XML feeds with different APIs. It is important to know that SimpleXML reads the entire DOM in memory, if you parse a great set of data, then you can get lost in memory. To learn more about SimpleXML, read the docs.
If you have a meal, it is recommended to hurry up to our
You can be infected with the XML robot. XML is a tse format for exchanging data between sites. It is even similar to HTML, only in XML its own tags and attributes are allowed.
Need XML for parsing? Inodі buvaє so, what a site that requires sparsity, there is an API, for the help of which it is possible to process bazhans, especially not to stress. That is immediately glad - before the team, how to parse the site, change what the API is missing.
What's the API? There are a number of functions, for the additional help of which you can supply power to the whole site and remove the demand from the list. The axle is most likely to match the XML format. Let’s proceed with it before you get pregnant.
PHP's XML Robot
Get it є XML. It can be found in a row, or it can be saved from the file, or it can be returned to the stored URL.
Let the XML get back to the side. For a wide range of rows, you need to open an object for help New SimpleXMLElement:
$ str = "
The infection is at our place $ xml Obtain an XML file from rosibranim. Zvertayuchis up to the authorities of the whole object, you can edit access to the XML tags instead. Yak sama - pick the trocha lower.
How XML can be saved from a file, or it looks like a URL (which is most common), followed by a function simplexml_load_file yak to rob the same object $ xml:
$ xml = simplexml_load_file (go to file abo url);
Priyomi robots
In the butts below our XML is stored in the file or the URL.
Come on, given offensive XML:
Let's take away the salary of the foreman:
$ xml = simplexml_load_file (go to file abo url); echo $ xml-> name; // vivede "Kolya" echo $ xml-> age; // wivede 25 echo $ xml-> salary; // Vivede 1000
Yak vi bachite, ob'єkt $ xml maє vlastivostі, scho display tags.
You can brutalize uvagu, u tag
$ xml = simplexml_load_file (go to file abo url); echo $ xml-> name; // vivede "Kolya" echo $ xml-> age; // wivede 25 echo $ xml-> salary; // Vivede 1000
There can be only one root tag in XML, so it’s like a tag in a snazzy HTML.
Let's modify our XML three times:
We have a lot of vipadku we have a lantsyuzhok beast:
$ xml = simplexml_load_file (go to file abo url); echo $ xml-> worker-> name; // vivede "Kolya" echo $ xml-> worker-> age; // vivede 25 echo $ xml-> worker-> salary; // Vivede 1000
Robot with attributes
Don't worry about the data being stored in the attributes:
$ xml = simplexml_load_file (go to file abo url); echo $ xml-> worker ["name"]; // vivede "Kolya" echo $ xml-> worker ["age"]; // wivede 25 echo $ xml-> worker ["salary"]; // Vivede 1000 echo $ xml-> worker; // wivede "Number 1"
Defined tags
XML allowed tags (that attributes) with a hyphen. At the end of the day, such tags are displayed as follows:
$ xml = simplexml_load_file (go to file abo url); echo $ xml-> worker -> (first-name); // vivede "Kolya" echo $ xml-> worker -> (last-name); // Vivede "Ivanov"
Over-cycle
Now we have not just one robot, but a little one. We can do this by looping our object behind an additional foreach loop:
$ xml = simplexml_load_file (go to file abo url); foreach ($ xml as $ worker) (echo $ worker-> name; // vivede "Kolya", "Vasya", "Petya")
Z ob'єkta to normal array
If you are not handy to work with the object, you can convert it to a normal PHP array with the help of an offensive cunning trick:
$ xml = simplexml_load_file (go to file abo url); var_dump (json_decode (json_encode ($ xml), true));
More information
Parsing based on sitemap.xml
Most often on the site є the sitemap.xml file. All files are taken into account on all sides of the site for the efficiency of indexing by sound systems (indexing - at the same time and і parsing the site by Yandex and Google).
We are hardly guilty of hvilyuvati, most of the time they use the file, smut, wink є - it is possible not to climb the sides of the site using some cunning methods, but simply to speed up the file.
How to reconcile the appearance of this file: do not we parse the site.ru site, to return to the browser up to site.ru/sitemap.xml - if you want to poke it, it means it’s there є, but if you don’t do it, then it’s a pity.
As a sitemap - then in new there will be a response to all aspects of the site in the XML format. Spooky pick up the XML, parse it, see what you need, be it in a handy way for you (for example, by analyzing the URL, like a description of the Pavuk method).
In the results, you will draw up a list of instructions for parsing, you will need to go to them and spars the content that you need.
Read the report about attaching sitemap.xml at the sitemap.
What are you given to you:
Fix the problem solving for the next step: work before the lesson.
If you do everything, go to the new ones.
Development of XML formatting є a set of rules for coding documents in machine-readable forms. XML is a popular format for exchanging data on the Internet. Sites that often update their content, for example, new sites and blogs, often create an XML channel, so they call programs that are in the course of changing content. Supervision and distribution of XML-tributes to social workers for programs with cut-outs. I'll explain this lesson, how the viconati rozbіr XML documents and vicoristovuvati їkh danі.
Vibir of syntax analyzer
Channel analysis
The first crocus at the pick-up to the channel є the decision about those in the fields of the data. An analyzer for the preset fields and ignore everything.
The axis is a fragment to the channel, which can be taken from the butt by the programs. A skinny post on StackOverflow.com is in the channel, as an entry tag, which is to revenge on the nested tags:
I have an Application that requires a data file ...
Application programs vityaguє data from the entry tag of the same nested tags title, link, and summary.
Syntax analyzer instance
Step by step є the stem of the syntax analyzer instance and the launch of the analysis process. In a whole lot of fragments, the analyzer should start doing so, so as not to crumble the space of the names, and also to pick up the InputStream messages as input data. The analysis process is run after the nextTag () and the readFeed () method, which is used to process the data, in the following links:
Public class StackOverflowXmlParser (// We don't use namespaces private static final String ns = null; public List parse (InputStream in) throws XmlPullParserException, IOException (try (XmlPullParser parser = Xml.newPullParser ()), false), parser.setInput (in, null); parser.nextTag (); return readFeed (parser);
Vidnimati channel
readFeed () method to rob the actual robot from processing the channel. Items designated by the "entry" tag є the upstream point for recursive processing of the channel. As soon as the next tag does not enter the tag, it is skipped. In addition, since the entire "line" has been recursively chipped, readFeed () rotates the List, so that the records (including the contributions of the data elements) are scanned through the channel. Time List can be turned by the analyzer.
Private List readFeed (XmlPullParser parser) throws XmlPullParserException, IOException (List entries = new ArrayList (); parser.require (XmlPullParser.START_TAG, ns, "feed"); while (parser.next ()! = Xml (parser.EventTAG )! = XmlPullParser.START_TAG) (continue;) String name = parser.getName (); readEntry (parser));) else (skip (parser);)) return entries;
Rozbir XML
Kroki for parsing XML channel:
I'll show you a fragment, like an analyzer to analyze entry, title, link, and summary.
Public static class Entry (public final String title; public final String link; public final String summary; private Entry (String title, String summary, String link) (;)) // Parses the contents of an entry. It’s just the same for all the records, summarized, or the link tag, hands them off // for their own read methods for the process. Іншіwise, skips the tag. private Entry readEntry (XmlPullParser parser) throws XmlPullParserException, IOException (parser.require (XmlPullParser.START_TAG, ns, "entry"); String title = null; String summary = null; String link = null; while = XmlPullParser.END_TAG) (if (parser.getEventType ()! = XmlPullParser.START_TAG) (continue;) String name = parser.getName (); if (name.equals ("title")) (title = readTitle (parser);) else if (name. equals ("summary")) (summary = readSummary (parser);) else if (name.equals ("link")) (link = readLink (parser);) else (skip (parser);)) return new Entry ( title, summary, link); ) // Processes title tags in the feed. private String readTitle (XmlPullParser parser) throws IOException, XmlPullParserException (parser.require (XmlPullParser.START_TAG, ns, "title"); String title = readText (parser); parser.require (XmlPullParser.END_TAG) return Processes // title link tags in the feed. private String readLink (XmlPullParser parser) throws IOException, XmlPullParserException (String link = ""; parser.require (XmlPullParser.START_TAG, ns, "link"); String tag = parser.getName (); String relType = parser.getAttribu, " rel "); ) parser.require (XmlPullParser.END_TAG, ns, "link"); return link; ) // Processes summary tags in the feed. private String readSummary (XmlPullParser parser) throws IOException, XmlPullParserException (parser.require (XmlPullParser.START_TAG, ns, "summary"); String summary = readText (parser); parser.require (XmlPullParser; return summary title;) For tags and summary, extracts their text values.private String readText (XmlPullParser parser) throws IOException, XmlPullParserException (String result = ""; if (parser.next () == XmlPullParser.TEXT) (result = parser.getText (); parser. nextTag ();) return result;) ...)
Transferring elements that you don't need
One of the crocs of XML analysis of the described vishche, the syntactic analyzer skips tags, which are not specified. Below is the code of the syntax analyzer skip () method:
Private link (XmlPullParser parser) throws XmlPullParserException, IOException (if (parser.getEventType ()! = XmlPullParser.START_TAG) (throw new IllegalStateException ();) int depth = 1; while (deprecated nextParser. case Xml_ENDTAG depth--; break; case XmlPullParser.START_TAG: depth ++; break;)))
Axis yak tse pratsyuє:
- The method of generating vignettes, when the process is not START_TAG.
- Vin is happy with START_TAG and all submissions, right up to END_TAG.
- If you change it, you should be able to use the correct END_TAG, and not the first visual tag of the original START_TAG, which will show you the deposit.
In such a rank, as the current element has no contribution, the value of depth will not be 0 until the analyzer has processed all the subdivisions with the original START_TAG and the same END_TAG. For example, it is possible to see the pass analyzer
- At the first pass through the while loop, the next tag, which is the analyzer of the instrument
tse START_TAG for - The other pass through the while loop has an onset tag, which is an analyzer, and END_TAG
- At the third pass through the while loop, the offensive tag, which is the analyzer, the START_TAG
... The depth value can be increased to 2. - The quarters pass through the while loop, the offensive tag, which is the analyzer, the END_TAG... The depth value is reduced to 1.
- At the end of the process, the last pass through the while loop, the offensive tag, which is the analyzer, the END_TAG... The depth value is reduced to 0, which indicates those who
element buv successfully missed.
XML Processing Danih
The application will program the processing and analysis of the AsyncTask XML channel. The processing of the pose is the main flow to the interface of the koristuvach. If the processing is completed, the program will update the interface of the keystroke in the main activity (NetworkActivity).
The fragment hovering below has a loadPage () method to break the step:
- Introduce the string to the URL values, and then point to the XML feed.
- How to set up a koristuvacha and connect to a pattern allow, wiklickє New DownloadXmlTask (). Execute (url). A new DownloadXmlTask object (AsyncTask pidclass) and a viconious execute () method, which will block and analyze the channel and rotate a row result, which will be displayed in the interface of the user.
- doInBackground () visonє method loadXmlFromNetwork (). Win is the URL to the channel as a parameter. The loadXmlFromNetwork () method will discard the processed channel. If I finish the processing, I will transfer the resulting row back.
- onPostExecute () accepts rotations of a row and renders it in the interface of a queue.
The loadXmlFromNetwork () method is hovered below, which can be wired from DownloadXmlTask. Win robbing like this:
- I am quittingє an instance of StackOverflowXmlParser. Win also open changes for List Entry objects (entries), title, url and summary, for saving a value, used in XML channel, for multiple fields.
- Viklikaє downloadUrl (), which will block the channel and rotate the InputStream.
- Vikoristovє StackOverflowXmlParser to parse InputStream. The StackOverflowXmlParser will store the List entries with the data for the channel.
- Editing the entries List and adding them to the channel with HTML formatting.
- Rotates the HTML row that is displayed in the interface of the headache, AsyncTask in the onPostExecute () method.
"+ getResources (). getString (R.string.page_title) +"
"); htmlString.append (" + getResources (). getString (R.string.updated) + "" + formatter.format (rightNow.getTime ()) + ""); (stream.close ();)) // StackOverflowXmlParser returns a List (called" entries ") of Entry objects. // Each Entry object represents a single post in the XML feed. // Introduced with HTML tagged."+ entry.title +"
"); // If the user set the preference to include summary text, // adds it to the display. If (pref) (htmlString.append (entry.summary);)) return htmlString.toString ();) // Given a string representation of URL, connect and gets // an input stream.conn.setReadTimeout (10000 / * milliseconds * /); conn.setConnectTimeout (15000 / * milliseconds * /); conn.setRequestMethod ("GET") ; conn.setDoInput (true); // Starts the query conn.connect (); return conn.getInputStream ();The publication of the statute is allowed to be deprived of the permission to the site of the author of the statti
At the ts_y statty I will aim the butt, as I will create a great XML file. If the server (hosting) is not hardened for more than an hour of script robots, then you can sort the XML file by yourself if you want gigabytes, you can pick up only 450 megabytes of ozone by yourself.
When parsing great XML files, there are two problems:
1. Marriage memory.
2. Deficiency of the seen hour for the robot script.
Another problem can be violated in an hour, since the server is not hardened.
And the axis of the problem with the memory of the virus is easy to navigate, if it’s about your server, then turning the files of 500 megabytes is not so easy, and even on the hosting and on the VDS, memory simply cannot be stored.
PHP has a small number of XML processing options - SimpleXML, DOM, SAX.
All the options are described in the articles with butts, but you can demonstrate to the robot with an XML document.
Axis one from the attachment, we can recognize it from the XML file
Now you can get rid of the object, ALE ...
As you can see, the entire XML file is read for a riddle, then everything is sorted out into the object.
So, all the dances are used by the memory, and if the seen memory is not enough, then the script will stop.
To process great files, such an option does not come, you need to read the file in a row and process the data according to your needs.
At the same time, the conversion to the validity is so good in the world of data processing, it needs the ability to display, for example, to see all the data entered into the database from a non-valid XML file, or to read two passages through the file obrob danikh.
Axis theoretical application to the analysis of the great XML file.
The whole script reads one character at a time from the file, picks up the data before the blocks and forwards before the XML is parsed.
This kind of reason will raise the problem of memory and not the problem of getting the job done, but rather the problem of an hour. Yak sprobuvati virishiti problem for an hour, read below.
Function webi_xml ($ file)
{
########
### robots function with data
{
print $ data;
}
############################################
{
print $ name;
print_r ($ attrs);
}
function of curving tags
function endElement ($ parser, $ name)
{
print $ name;
}
############################################
($ xml_parser, "data");
// open file
$ fp = fopen ($ file, "r");
$ perviy_vxod = 1; $ data = "";
{
$ simvol = fgetc ($ fp); $ data. = $ simvol;
if ($ simvol! = ">") (continue;)
echo "
break;
}
$ data = "";
}
fclose ($ fp);
Webi_xml ("1.xml");
?>
At the very bottom, I can see everything in one function webi_xml () and at the very bottom you can see її wiklik.
The script itself is composed of three main functions:
1. Function, how to catch the startElement () tag display
2. Function, how to catch the close of the endElement () tag
3. The first function of rejecting data is data ().
Supposedly, in place of the 1.xml file as a recipe
<
title
>Prosty hlib
<
ingredient amount
=
"3"
unit
=
"стакан"
>Boroshno
<
ingredient amount
=
"0.25"
unit
=
"грамм"
>Дріжі
<
ingredient amount
=
"1.5"
unit
=
"стакан"
>Warm water
<
ingredient amount
=
"1"
unit
=
"чайная ложка"
>Sil
<
instructions
>
<
step
>
Zmіshati all Ingredієnti and retelno zamіsiti.
<
step
>
Close it with a cloth and fill it up for one year in a warm environment.
<
step
>
Change more times,
put on a sheet and put it in the oven.
<
step
>
Enter site
Fix everything from the wiki to the webi_xml function ("1.xml");
Dalі in tіy funcііon start the picker and all the names of tags in the changeover top register, schob usi tags mali the same register.
$ xml_parser = xml_parser_create ();
xml_parser_set_option ($ xml_parser, XML_OPTION_CASE_FOLDING, true);
Now vkazuєmo yaki functions will be useful for the display of the tag
xml_set_element_handler ($ xml_parser, "startElement", "endElement");
xml_set_character_data_handler($ xml_parser, "data");
Go through the file, look through the file one character at a time, and the skin symbol will not be able to reach the row of winter docks. >
.
If the file is better than the file, then for sure everything will be seen, if we borrow the file on the cob, everything will cost up to This tag itself is used to read XML.
Forward ryadkova is changed to a zbere in a row of dogs
І edit її before picking
xml_parse ($ xml_parser, $ data, feof ($ fp));
When a tribute was collected by a row, a change would be skipped and a new row had to be repaired.
By-tertє
Beast to respect, but a string change should be formed by the finished tag >
and it is not obligatory to send a message to the developer with a message and a message.
For this sampler, it is important to rit out the tsil not the broken tag, I want one to see it, but the coming croc of the tag, or just right off the 1000 rows in the file, it’s not important, smut the tag isn’t riveted, for example
le> Prosty hlib
So it is not possible to send a reply to the obrobnik;
You can come up with your own method for supervising the data in the sample, for example, picking up 1 megabyte of data and send it to the sample for the promotion of the feed, just keep on track, the tags are always being completed, and the data can be taken out
In this order, in parts, as you want, you can send a great file to a copy.
Now it is clear, as tsі danі obroblyayutsya and how іх trim.
Fixing the functionality of tags, startElement ($ parser, $ name, $ attrs)
It is acceptable that the obrobka went to the row
<
ingredient amount
=
"3"
unit
=
"стакан"
>Boroshno
Todi all the middle functions of change $ name dorivnyuvatime ingredient This is the name of the open tag (until the close of the tag on the right, it has not worked yet).
There will also be an array of attributes for the $ attrs tag in this vipad, in which there will be amount = "3" i unit = "bottle".
After the processing of the given tag went to the function data ($ parser, $ data)
Zminniy $ data will have everything that is found under the tag, that is, in our vipad, the text Flour
I complete the processing of our row with the function endElement ($ parser, $ name)
Qia name of the closed tag, in our $ name drop-down list ingredient
And then again everything went on a cola.
The aiming butt does not demonstrate the principle of XML processing, but the real storing of it is required to be further processed.
Please, select the great XML to be brought into the database and from the correct processing of the data. Mayuchi this information can be correctly crawled the file without any problems.
For the whole, it is necessary to enter a number of global changes, such as collecting information about display tags, contributions and data.
I aim the butt, which can be victorious by the way
Function webi_xml ($ file)
{
global $ webi_depth; // a dispenser, for making a deposit
$ webi_depth = 0;
global $ webi_tag_open; // retaliation for an array of messages
$ webi_tag_open = array ();
global $ webi_data_temp; // whole array of data from one tag
####################################################
### robots function with data
function data ($ parser, $ data)
{
global $ webi_depth;
global $ webi_tag_open;
global $ webi_data_temp;
// dodaamo dan in the array from the values of the contribution and the danny tag
$ webi_data_temp [$ webi_depth] [$ webi_tag_open [$ webi_depth]] ["data"]. = $ data;
}
############################################
####################################################
### function display tags
function startElement ($ parser, $ name, $ attrs)
{
global $ webi_depth;
global $ webi_tag_open;
global $ webi_data_temp;
// if the value of the investment is not null, there is also one addcrit tag
// and the given data is already in the array, it is possible to process it
if ($ webi_depth)
{
"
;
print "
"
;
print_r ($ webi_tag_open); // array of display tags
print "
" ;
// for the revision of the gifts of the memory
unset ($ GLOBALS ["webi_data_temp"] [$ webi_depth]);
}
// Now the offensive tag has been displayed and the process will be displayed on the offensive end
$ webi_depth ++; // great contribution
$ webi_tag_open [$ webi_depth] = $ name; // give a message to the tag in the information array
$ webi_data_temp [$ webi_depth] [$ name] ["attrs"] = $ attrs; // now dodєmo tag attributes
}
###############################################
#################################################
function of curving tags
function endElement ($ parser, $ name) (
global $ webi_depth;
global $ webi_tag_open;
global $ webi_data_temp;
// Here the processing of the tribute can be repaired, for example, adding to the base, saving the file, etc.
// $ webi_tag_open to avenge the lantsyuzhok of the critical tags for the equal contribution
// for example $ webi_tag_open [$ webi_depth] revenge the name of the open tag.
// $ webi_depth tag attachment value
// $ webi_data_temp [$ webi_depth] [$ webi_tag_open [$ webi_depth]] ["attrs"] array of tag attributes
// $ webi_data_temp [$ webi_depth] [$ webi_tag_open [$ webi_depth]] ["data"] tag data
Print "dana". $ webi_tag_open [$ webi_depth]. "-". ($ webi_data_temp [$ webi_depth] [$ webi_tag_open [$ webi_depth]] ["data"]). "
"
;
print_r ($ webi_data_temp [$ webi_depth] [$ webi_tag_open [$ webi_depth]] ["attrs"]);
print "
"
;
print_r ($ webi_tag_open);
print "
" ;
Unset ($ GLOBALS ["webi_data_temp"]); // after the revision of the data in sight of the array with the data on the background, the fragments will be added to the close tag
unset ($ GLOBALS ["webi_tag_open"] [$ webi_depth]); // vidalyaєmo information about the response tag ...
$ webi_depth -; // change contribution
}
############################################
$ xml_parser = xml_parser_create ();
xml_parser_set_option ($ xml_parser, XML_OPTION_CASE_FOLDING, true);
// vkazuєmo yaki funktsii pratsyuvatimut pіd hour of display and close tags
xml_set_element_handler ($ xml_parser, "startElement", "endElement");
// vkazuєo function up to robots with data
xml_set_character_data_handler($ xml_parser, "data");
// open file
$ fp = fopen ($ file, "r");
$ perviy_vxod = 1; // Prapor for converting the first input to the file
$ data = ""; // here you can select parts of the data from the file and send it to the xml directory
// the loop is not known to end the file
while (! feof ($ fp) and $ fp)
{
$ simvol = fgetc ($ fp); // read one character from the file
$ data. = $ simvol; // Add a character to the tribute for the update
// if the character does not end the tag, then we turn to the cob to the loop and then one character to the next one, and so on, until the tag is found, as long as the tag is not found.
if ($ simvol! = ">") (continue;)
// if the cursing tag is known, it is correct to select the data in the processing
// Reverse, if the file is entered, then everything is visible before the tag// so as one can create a smittya to a cob of XML (coarse editor, or a file with a script from the server)
if ($ perviy_vxod) ($ data = strstr ($ data, "
// now kidaimo dana in the xml list
if (! xml_parse ($ xml_parser, $ data, feof ($ fp))) (
// here it is possible to make that kind of pardon for valence ...
// well, start a little pardon, open it up
echo "
XML Error: ". Xml_error_string (xml_get_error_code ($ xml_parser));
echo "at line". xml_get_current_line_number ($ xml_parser);
break;
}
// Pislya to the analysis of skidamo selection of the data for the offensive croc cycle.
$ data = "";
}
fclose ($ fp);
xml_parser_free ($ xml_parser);
// View of global changes
unset ($ GLOBALS ["webi_depth"]);
unset ($ GLOBALS ["webi_tag_open"]);
unset ($ GLOBALS ["webi_data_temp"]);
Webi_xml ("1.xml");
?>
The whole butt is suprovodzhuvav comments, now test and experiment.
To brutalize respect, the functions of the robot with the data in the array of data are not simply inserted, but themselves are added for help " .="
So, if the dania can be found not in the whole viglyad, and if it is simply appropriated, then in some cases you will be able to take the danny with shmatki.
Well, the axis and that's it, now, when processing the file, be it a memory size, and the hour axis of the robot script can be changed in several ways.
On the ear of the script, paste the function
set_time_limit (6000);
abo
ini_set ("max_execution_time", "6000");
Or give the text to the .htaccess file
php_value max_execution_time 6000
Add an hour of robot script to 6000 seconds.
It’s possible to save an hour in such a way in a non-fired mode.
If you є have access to php.ini editing, you can take an hour for help
max_execution_time = 6000
For example, at the time of writing the statistics, the script is hardened for an hour on the hosting meisterhost, do not marvel at being exposed bakeless mode, if you are a pro, you can create your own php on the meisterhost, but not in the statistics.
