php教程

chdir

(PHP 4, PHP 5, PHP 7)

chdir改变目录

说明

chdir ( string $directory ) : bool

将 PHP 的当前目录改为 directory

参数

directory

新的当前目录

返回值

成功时返回 TRUE, 或者在失败时返回 FALSE

错误/异常

Throws an error of level E_WARNING on failure.

范例

Example #1 chdir() 例子

<?php

// current directory
echo getcwd() . "\n";

chdir('public_html');

// current directory
echo getcwd() . "\n";

?>

以上例程的输出类似于:

/home/vincent
/home/vincent/public_html

注释

Note: 当启用 安全模式时, PHP 会在执行脚本时检查被脚本操作的目录是否与被执行的脚本有相同的 UID(所有者)。

参见

User Contributed Notes

php dot duke at qik dot nl 31-Jan-2009 02:16
When changing dir's under windows environments:

<?php
$path
="c:\temp"';
chdir($path);
/* getcwd() gives you back "c:\temp" */

$path="c:\temp\"'
;
chdir($path);
/* getcwd() gives you back "c:\temp\" */
?>

to work around this inconsistency
doing a chdir('.') after the chdir always gives back "c:\temp"
herwin at snt dot utwente dot nl 17-Aug-2006 11:58
When using PHP safe mode and trying to change to a dir that is not accessible due to the safe mode restrictions, the function simply fails without generating any kind of error message.

(Tested in PHP 4.3.10-16, Debian Sarge default)

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