PHP Get path or directory implementation

Source: Internet
Author: User

<?php /**   * PHP获取路径或目录实现   */   //魔术变量,获取当前文件的绝对路径 echo "__FILE__: ========> " . __FILE__ ; echo ‘<br/>‘ ;   //魔术变量,获取当前脚本的目录 echo "__DIR__: ========> " .__DIR__; echo ‘<br/>‘ ;   //dirname返回路径的目录部分,dirname(__FILE__)相当于__DIR__ echo "dirname(__FILE__): ========> " .dirname( __FILE__ ); echo ‘<br/>‘ ;   //$_SERVER[‘PHP_SELF‘]和$_SERVER[‘SCRIPT_NAME‘]的结果一般相同,他们都是获取当前脚本的文件名 //只有当php以cgi方式运行时有区别,但是现在几乎找不到以cgi方式运行php了 echo ‘$_SERVER["PHP_SELF"]: ========> ‘ . $_SERVER [ ‘PHP_SELF‘ ]; echo ‘<br/>‘ ;   echo ‘$_SERVER["SCRIPT_NAME"]: ========> ‘ . $_SERVER [ ‘SCRIPT_NAME‘ ]; echo ‘<br/>‘ ;   //当前执行脚本的绝对路径。记住,在CLI方式运行php是获取不到的 echo ‘$_SERVER["SCRIPT_FILENAME"]: ========> ‘ . $_SERVER [ ‘SCRIPT_FILENAME‘ ]; echo ‘<br/>‘ ;   //当前运行脚本所在的文档根目录。在服务器配置文件中定义。 echo ‘$_SERVER["DOCUMENT_ROOT"]: ========> ‘ . $_SERVER [ ‘DOCUMENT_ROOT‘ ]; echo ‘<br>‘ ;   //getcwd()返回当前工作目录 echo "getcwd(): ========> " . getcwd (); echo ‘<br>‘ ;

PHP Get path or directory implementation

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