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PHP: get_defined_vars() function

Description

The get_defined_vars() function returns an array of all defined variables.

Version:

(PHP 4 and above)

Syntax:

get_defined_vars()

Return value:

A multidimensional array with all the variables.

Value Type: Array.

Example:

<?php
$array1 = array(10, 20, 30, 40, 50);
$array1 = get_defined_vars();
print_r($array1);
?>

Output:

Array  ( [GLOBALS] => Array  ( [GLOBALS] => Array   *RECURSION*              [_POST] => Array (  ) [_GET] => Array   (   ) [_COOKIE] => Array  (    )[_FILES] => Array(  ) [array1] => Array   *RECURSION* )  [_POST] => Array ( ) [_GET] => Array ( ) [_COOKIE] => Array ( ) [_FILES] => Array (  ) [array1] => Array   (  [0] => 10   [1] => 20 [2] => 30  [3] => 40    [4] => 50 )    ) 

View the example in the browser

Practice here online :

See also

PHP Function Reference

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Next: get_resource_type



PHP: Tips of the Day

SQL injection that gets around mysql_real_escape_string()

Consider the following query:

$iId = mysql_real_escape_string("1 OR 1=1");    
$sSql = "SELECT * FROM table WHERE id = $iId";

mysql_real_escape_string() will not protect you against this. The fact that you use single quotes (' ') around your variables inside your query is what protects you against this. The following is also an option:

$iId = (int)"1 OR 1=1";
$sSql = "SELECT * FROM table WHERE id = $iId";

Ref : https://bit.ly/32q3bJ7