PHP get_defined_vars() Function

PHP 可用的函数PHP Available Functions

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

Version requirements: PHP 4 >= 4.0.4, PHP 5, PHP 7

Syntax

array get_defined_vars ( void )

Parameter description:

  • void。

Return Value

Returns a multidimensional array containing a list of all defined variables, including environment variables, server variables, and user-defined variables.

Example

Example

<?php $b = array(1,1,2,3,5,8); $arr = get_defined_vars(); //Print $b print_r($arr["b"]); //Print the path of the PHP interpreter (if PHP is used as CGI) //For example: /usr/local/bin/php echo $arr["_"]; //Print command line arguments (if any) print_r($arr["argv"]); //Print all server variables print_r($arr["_SERVER"]); //Print all available keys of the variable array print_r(array_keys(get_defined_vars())); ?>

The execution result is as follows:

Array
(
    [0] => 1
    [1] => 1
    [2] => 2
    [3] => 3
    [4] => 5
    [5] => 8
)
Array
(
    [0] => /tmp/543750210/main.php
)
Array
(
    [PATH] => /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
    [HOSTNAME] => glot-runner
    [PHPIZE_DEPS] => autoconf         dpkg-dev         file         g++         gcc         libc-dev         make         pkg-config         re2c
    [PHP_INI_DIR] => /usr/local/etc/php
    [PHP_CFLAGS] => -fstack-protector-strong -fpic -fpie -O2
    [PHP_CPPFLAGS] => -fstack-protector-strong -fpic -fpie -O2
    [PHP_LDFLAGS] => -Wl,-O1 -Wl,--hash-style=both -pie
    [GPG_KEYS] => 1729F83938DA44E27BA0F4D3DBDB397470D12172 B1B44D8F021E4E2D6021E995DC9FF8D3EE5AF27F
    [PHP_VERSION] => 7.2.1
    [PHP_URL] => https://secure.php.net/get/php-7.2.1.tar.xz/from/this/mirror
    [PHP_ASC_URL] => https://secure.php.net/get/php-7.2.1.tar.xz.asc/from/this/mirror
    [PHP_SHA256] => 6c6cf82fda6660ed963821eb0525214bb3547e8e29f447b9c15b2d8e6efd8822
    [PHP_MD5] => 
    [HOME] => /home/glot
    [PHP_SELF] => /tmp/543750210/main.php
    [SCRIPT_NAME] => /tmp/543750210/main.php
    [SCRIPT_FILENAME] => /tmp/543750210/main.php
    [PATH_TRANSLATED] => /tmp/543750210/main.php
    [DOCUMENT_ROOT] => 
    [REQUEST_TIME_FLOAT] => 1524198667.12
    [REQUEST_TIME] => 1524198667
    [argv] => Array
        (
            [0] => /tmp/543750210/main.php
        )

    [argc] => 1
)
Array
(
    [0] => _GET
    [1] => _POST
    [2] => _COOKIE
    [3] => _FILES
    [4] => argv
    [5] => argc
    [6] => _SERVER
    [7] => b
    [8] => arr
)

PHP 可用的函数PHP Available Functions

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