PHP get_defined_vars() 函数
PHP 教程
· 2019-01-31 15:27:37
get_defined_vars() 函数返回由所有已定义变量所组成的数组。
版本要求：PHP 4 >= 4.0.4, PHP 5, PHP 7
语法
array get_defined_vars ( void )
参数说明：
- void。
返回值
返回一个包含所有已定义变量列表的多维数组，这些变量包括环境变量、服务器变量和用户定义的变量。
实例
实例
$b = array(1,1,2,3,5,8);
$arr = get_defined_vars();
// 打印 $b
print_r($arr["b"]);
// 打印 PHP 解释程序的路径（如果 PHP 作为 CGI 使用的话）
// 例如：/usr/local/bin/php
echo $arr["_"];
// 打印命令行参数（如果有的话）
print_r($arr["argv"]);
// 打印所有服务器变量
print_r($arr["_SERVER"]);
// 打印变量数组的所有可用键值
print_r(array_keys(get_defined_vars()));
执行结果如下所示：
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
)
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