Zmіnnі otochennya (middle) in Windows to revenge for information about nalashtuvannya sistemi that middle class koristuvach. Razr_znyayut changes otochennya koristuvach, systems and processes.

The easiest way to look instead of the changes in Windows is to display the power of the system ( sysdm.cpl) -> Dodatkovo -> Winter middle ground. Yak vi bachite, there are two sections at the top: at the top, there is a change of corystuvach, in the bottom - system.

In addition, the change of the middle is taken from the re-system. The winners are saved in the distribution. System - in HKLM \ SYSTEM \ CurrentControlSet \ Control \ Session Manager \ Environment.

You can get the meaning of all the changes from the team row of windows... The command is simple:

The vived command is a list of the winter middle ground and its meaning.

For PowerShell, you can use the following command to see all the changes.

It is necessary to add the value of more than one change, it is necessary to quickly use the echo command, moreover, it is necessary to set the signs of messages. For example,

Echo% systemroot%

set> c: \ tmp \ env_var.txt

The change of a specific process can be recognized for additional help Utilities Process Explorer(Від Sysinternals). Enough to see the power of the process and go to the tab Environment.

Php- a chain of information container, which can take revenge on your own різні tipi danih (text, numbers, masivi tosho). For the whole, ninja allow them to open up, save up, change up, and on the other hand, they quickly go to the information given by them.

How to open a change in PHP

A collection of changes to revenge a sign $ (dolar) - the signified victorian of the winter, by the literi Latin alphabet(from a to z that small and large), for example, I can use digits... The name also allows for the lower seat (not in the corner).

You can name the winter:

$ var
$ variable
$ year1945
$ _variable
Yak can not be called a change:

$ 1 - be stocked out of a number
$ 1var - cannot be repaired.
$ / var - from additional characters to be allowed unless the lower seat _
$ zminna - Cyrillic allowed by php documentation, but not recommended
$ var iable - it is not possible to vikoristovuvat the glades

Skin wrinkles nadaetsya meaning. To assign a value vikoristovuyut sign = (Rivno). With a stretch of the script, the meaning of the changing minds can be changed over and over again.

$ city = "Moscow"; // change $ city on a row (at the paws) meaning Moscow
$ year = 1147; // a new $ year was given a numerical value of 1147
?>

$ name = "Oleksandr";
$ Name = "Oleksiy";
echo "$ name, $ Name"; // vivede "Oleksandr, Oleksiy"
?>

Vivedennya zminnih PHP

Okremo slid rozibrati those, how to represent the changes for help operator_v vivedennya, the robot was taken from the last urotsi Side effects of PHP. Operator vivedennya.... Bottom I will aim low on the butts with comments.

// This is how the meaning is set
$ name1 = "Oleksiy";
$ name2 = "Oleksandr";

// Vivodimo zminni
echo $ name2; // Vivede: Oleksandr
echo "name1 is $ name1"; // name1 - tse Oleksiy

// When single paws are picked up
// I’m wicked, but what’s not important
echo "name1 is $ name1"; // wivede: name1 - $ name1

// you can just add the value of the changes
echo $ name1; // Oleksiy
echo $ name1, $ name2; // Oleksiy Oleksandr
echo $ name1. "". $ name2; // Oleksiy Oleksandr
echo "$ name1, $ name2"; // Oleksiy, Oleksandr

Echo<<Here is the "here document" syntax for vivedenny.
number of rows from the default setting $ variable.
END;

Operations with PHP changes

PHP arithmetic operations
As for numerical values, it is possible to carry out arithmetic operations: additional data, presentation, many times.

- $ a(reserved) A substitute for the symbol $ a.
$ a + $ b(addition) Sum $ a and $ b.
$ a - $ b(віднімання) Різниця $ a і $ b.
$ a * $ b(multiple) Dobutok $ a and $ b.
$ a / $ b(subline) Private submission $ a to $ b.
$ a% $ b(distributed by module) The digital surplus from the distribution of $ a to $ b.
Put it on clearly

$ a = 2; // Respect, no paws should be placed on the digits
$ b = 3; // Respect, no paws should be placed on the digits

$ result = $ a + $ b; // Warehouse for change
echo $ result; // vivede 5

$ result = $ b - $ a; // Warehouse for change
echo $ result; // wivede 1

Operators for increment and decrement in PHP
The given operations will begin in the present, mainly when prompted by the cycles, about which we will talk about the problems.
Prefixny- the operator, registered BEFORE the change ( - $ a; ++ $ a). Rotate the value of the change to the change.
Postfixny- Operators, scho to register for a change ( $ a--; $ a--). Rotate the meaning of change and change.
Increment- Zbіlshennya value.
Decrement- Change of value.

++ $ a Prefix increment. Zbilshu $ a for one turn of the value of $ a.
$ a ++ Postfix increment. Rotate the value of $ a, and then increase the value of $ a by one.
- $ a Prefix decrement. I change $ a to one turn of the value of $ a.
$ a-- Postfix decrement. Rotate the value of $ a, and then change $ a to one.
echo "

Postfix increment

";
$ a = 5;
echo "Maє buti 5:". $ a ++. "\ n";

Echo "

Prefixincrement

";
$ a = 5;
echo "Maє buti 6:". ++ $ a. "\ n";
echo "Maє buti 6:". $ a. "\ n";

Echo "

Postfix decrement

";
$ a = 5;
echo "Maє buti 5:". $ a--. "\ n";

Echo "

Prefix decrement

";
$ a = 5;
echo "Maє buti 4:". - $ a. "\ n";
echo "Maє buti 4:". $ a. "\ n";
?>

Operators assignment in PHP
Basic operator viglyadaє yak = ... At the first glance, you can start, as the operator is one. As a matter of fact, it’s not so. As a matter of fact, the operator of assigning a meaning means that the operand is swelling the value of the right swing (to establish the resulting values). Combined operators- a number of operators, who allow vicorists to use the forward values ​​of the changes for the offensive operations (to add to the row changes (with the text) or to add the numbers).

$ a = ($ b = 2) + 4; // result: $ a set to 6, change $ b to 2.

$ a = 2;
$ a + = 3; // set $ a to the value 5, similarly before writing: $ a = $ a + 3;
$ b = "Privit";
$ b. = "Svit!"; // I will place $ b in a row "Privit World!", yak і $ b = $ b. "There!";

Run also operativesі logical We'll talk more about them in the upcoming lessons. I will try not to miss you with a great information exchange!)

Singingly, you have a є shafa at home, or a chest of drawers. The principle of simple vicariousness: we tidy up these speeches, which we do not need directly at once, but we may know it in a dozen hour.

The change is so self-evident. They can have obeisances as a value and take out there, docks won’t be known.

The creation of the wintry

The meaning of the change can be done as follows:

At the coda, they shot a change of $ name and gave it to Ivan, then they added a change of $ age and gave it the value of 20.

The name "change" means that it can be meaningful before the hour is sent to the script:

In the case of young people, I need a little bit of "nakedness", and then it’s already victorious. PHP has no numbness - it doesn’t happen at that moment, if you put a value in it.
Tim is not the man, PHP programs often seem to "bend the change" instead of "open the change".

Likewise, the substitution of "respect for the meaning" often seems to be "for the purpose of meaning."
The reason is simple - the symbol =, for the reason that the definition is different, is called the "assignment operator". Starts and the term "appropriate".

Rules for Mentioning Winter

1. The name of the change is to be repaired from the symbol $.

2. Another symbol can be a letter or a seat symbol _

Name the winter resorts. $ name and $ Name - the price of the change.

Vivedennya value of the change on the screen

You can make a change with the help of the command echo:

The echo command allows you to enter the following value on the screen:

Respect, mi transferred 2 values ​​to echo, giving them a lump. This way we can transfer the words to the right value. Step two butts to produce the same result:

Similarly, PHP quicks have the syntax for quick changes. Substitute

Prior to PHP 5.4, speed-up syntax is correct only when the directive short_open_tag is included in the PHP settings, as it also allows the speed-ups of the tag to be opened.

Reconsideration of the meaning of the change

The echo command does not need to manually change the stream value of the change. For example, when looking at an empty row on the screen, there is absolutely nothing to be seen. І nezumіlo, for which the reason - in an empty change and a non-flammable code.

The var_dump () function is used to change the meaning of the change.

The result of the vikonannya script:

String (5) "Vasya" string (0) ""

Yak bachite, PHP viviv is not only in the place of change, but there are more symbols and type of change (string - row). Tipi danih mi will be visible in the beginning lessons.

Vidalennya zminnykh

You can see the change with the help of the unset () function:

And now I have instructed you to practice for an hour.

Remember, it’s practical to use PHP as a mother tongue. In this case, your decision will be taken from the ones written on the whole site - this does not mean that it was done incorrectly.

Write a script like:
1. Constructed with titles title and content that are not meaningful.
2. Display the value of the changing title in the middle of the h1 tag, and the value of the changing content in the middle of the div tag.

Show solution

", $ title,""; echo"

"; ?>

I want to brutalize your respect again, but the price of the decision is not edinim virnim. For example, the offensive code will produce the following result:

13 years ago

A little gotcha to watch out for:

As soon as you get off RegisterGlobals and when you see it, if you see get_defined_vars (), you can give it a day as you go back:

Array
[GLOBALS] => Array
[GLOBALS] => Array
* RECURSION *
[_POST] => Array ()
[_GET] => Array ()
[_COOKIE] => Array ()
[_FILES] => Array ()
)

[_POST] => Array ()
[_GET] => Array ()
[_COOKIE] => Array ()
[_FILES] => Array ()

)
?>

Notice that $ _SERVER isn "t there. It seems that php only loads the superglobal $ _SERVER if it is used somewhere. You could do this:

print "

".htmlspecialchars (print_r (get_defined_vars (), true))."

" ;
print "

".htmlspecialchars (print_r ($ _SERVER, true))."

" ;
?>

And then $ _SERVER will appear in both lists. I guess it "s no really a gotcha, because nothing bad will happen either way, but it's an interesting curiosity nonetheless.

6 rockiv to that

Since get_defined_vars () only gets variables in your function item, it stinks in a straightforward way to process options within current scope.

// The very top of your php script
$ vars = get_defined_vars ();

// Now do your stuff
$ foo = "foo";
$ bar = "bar";

// Get all the variables defined in current scope
$ vars = array_diff (get_defined_vars (), $ vars);

echo "

"
;
print_r ($ vars); 
echo "

" ;
?>

15 years ago

Here is a function which generates a debug report for display or email
using get_defined_vars. Great for getting a detailed snapshot without
relying on user input.

function generateDebugReport ($ method, $ defined_vars, $ email = "undefined") (
// Function to log off if you want to open or open an email.
// Usage: generateDebugReport (method, get_defined_vars (), email);
// Where method is "browser" chi "email".

// Create an ignore list for keys returned by "get_defined_vars".
// For butt, HTTP_POST_VARS, HTTP_GET_VARS and інші
// redundant (same as _POST, _GET)
// Also include vars you want ignored for security reasons - i.e. PHPSESSID.
$ ignorelist = array ("HTTP_POST_VARS", "HTTP_GET_VARS",
"HTTP_COOKIE_VARS", "HTTP_SERVER_VARS",
"HTTP_ENV_VARS", "HTTP_SESSION_VARS",
"_ENV", "PHPSESSID", "SESS_DBUSER",
"SESS_DBPASS", "HTTP_COOKIE");

$ timestamp = date ("m / d / y h: m: s");
$ message = "Debug report created $ timestamp \ n";

// Get the last SQL error for good measure, where $ link is the resource identifier
// for mysql_connect. Comment out or modify for your database or abstraction setup.
global $ link;
$ sql_error = mysql_error ($ link);
if ($ sql_error) (
$ message. = "\ nMysql Messages: \ n". mysql_error ($ link);
}
// End MySQL

// Could use a recursive function here. You get the idea ;-)
foreach ($ defined_vars as $ key => $ val) (
if (is_array ($ val) &&! in_array ($ key, $ ignorelist) && count ($ val)> 0) (
$ message. = "\ n $ key array (key = value): \ n";
foreach ($ val as $ subkey => $ subval) (
if (! in_array ($ subkey, $ ignorelist) &&! is_array ($ subval)) (
$ message. = $ subkey. "=". $ subval. "\ n";
}
elseif (! in_array ($ subkey, $ ignorelist) && is_array ($ subval)) (
foreach ($ subval as $ subsubkey => $ subsubval) (
if (! in_array ($ subsubkey, $ ignorelist)) (
$ message. = $ subsubkey. "=". $ subsubval. "\ n" ;
}
}
}
}
}
elseif (! is_array ($ val) &&! in_array ($ key, $ ignorelist) && $ val) (
$ message. = "\ nVariable". $ key. "=". $ val. "\ n";
}
}

If ($ method == "browser") (
echo nl2br ($ message);
}
elseif ($ method == "email") (
if ($ email == "undefined") (
$ email = $ _SERVER ["SERVER_ADMIN"];
}

$ mresult = mail ($ email, "Debug Report for". $ _ENV ["HOSTNAME"]. "", $ message);
if ($ mresult == 1) (
echo "Debug Report sent successfully. \ N";
}
else (
echo "Failed to send Debug Report. \ N";
}
}
}
?>

17 years ago

Simple routine to convert get_defined_vars object to XML.

function obj2xml ($ v, $ indent = "") (
while (list ($ key, $ val) = each ($ v)) (
if ($ key == "__attr") continue;
// Check for __attr
if (is_object ($ val -> __attr)) (
while (list ($ key2, $ val2) = each ($ val -> __attr)) (
$ attr. = "$ key2 = \" $ val2 \ "";
}
}
else $ attr = "";
if (is_array ($ val) || is_object ($ val)) (
print ("$ indent< $key$attr >\ n ");
obj2xml ($ val, $ indent. "");
print ("$ indent\ n ");
}
else print ("$ indent< $key$attr >$ val\ n ");
}
}

// Example object
$ x -> name -> first = "John";
$ x -> name -> last = "Smith";
$ x -> arr ["Fruit"] = "Bannana";
$ x -> arr ["Veg"] = "Carrot";
$ y -> customer = $ x;
$ y -> customer -> __attr -> id = "176C4";

$ z = get_defined_vars ();
obj2xml ($ z ["y"]);
?>
will output:


John
Smith


Bannana
Carrot

11 years ago

As a note, get_defined_vars () does no return a set of variable references (as I hoped). For example:

// define a variable
$ my_var = "foo";

// get our list of defined variables
$ defined_vars = get_defined_vars ();

// now try to change the value through the returned array
$ defined_vars ["my_var"] = "bar";

echo $ my_var, "\ n";

?>

will output "foo" (the original value). It will be kind, as get_defined_vars () is an optional argument in order to be able to use it, but if I have a particular need.

$ defined_vars = array ();
$ var_names = array_keys (get_defined_vars ());

foreach ($ var_names yak $ var_name)
{
$ defined_vars [$ var_name] = & $ $ var_name;
}

?>

1 rik to that

I put її before "tsiogo", which can be found in get_defined_vars.

Do not appear without be-like vipadkіv, but in singing vipadkіv tse will appear nervously.

Php -r "
class Test (
public function a () (var_dump (array_keys (get_defined_vars ()))); $ a = 123;)
public function b () (var_dump (array_keys (get_defined_vars ()))); $ this;)
}
$ t = New Test ();
$ t-> a ();
$ t-> b ();
"

Array ()
array ("this")

Not є PHP 7.2, but PHP 5.6.

1 rik to that

Some comments vibrate the fact that the wont return references function. Tse means, return names and names є "references".

I can’t worry about those who will be able to reimagine.

Public function x ($ a, $ b, $ c) (
foreach (array_keys (get_defined_vars ()) as $ key)
if ($ key! == "this")
$ this-> y ($ ($ key));
}

Public function y (& $ input) (
$ input ++;
}

Instead of $ () You can also choose to save $$.

I have done some whacky things in my time to make extremely generic code but I "ve never had to do anything.

You can also have $$ key ++ but I've never seen code like that which wasn't horrifically bad (using dynamic where dynamic isn't beneficial).

Yaksho vi will help you about those that are natural, tse dodatkovo twist.