get_defined_vars
(PHP 4 >= 4.0.4, PHP 5, PHP 7)
get_defined_vars — Returns an array of all defined variables
Description
array get_defined_vars ( void )This function returns a multidimensional array containing a list of all defined variables, be them environment, server or user-defined variables, within the scope that get_defined_vars() is called.
Return Values
A multidimensional array with all the variables.
Examples
Example #1 get_defined_vars() Example
<?php
$b?=?array(1,?1,?2,?3,?5,?8);
$arr?=?get_defined_vars();
//?print?$b
print_r($arr["b"]);
/*?print?path?to?the?PHP?interpreter?(if?used?as?a?CGI)
?*?e.g.?/usr/local/bin/php?*/
echo?$arr["_"];
//?print?the?command-line?parameters?if?any
print_r($arr["argv"]);
//?print?all?the?server?vars
print_r($arr["_SERVER"]);
//?print?all?the?available?keys?for?the?arrays?of?variables
print_r(array_keys(get_defined_vars()));
?>See Also
- isset() - Determine if a variable is set and is not NULL
- get_defined_functions() - Returns an array of all defined functions
- get_defined_constants() - Returns an associative array with the names of all the constants and their values
← floatval
get_resource_type →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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