chdir

(PHP 4, PHP 5, PHP 7)

chdirChange directory

Опис

bool chdir ( string $directory )

Changes PHP's current directory to directory.

Параметри

directory

The new current directory

Значення, що повертаються

Повертає TRUE в успішному випадку або FALSE в разі помилки.

Помилки/Винятки

Throws an error of level E_WARNING on failure.

Приклади

Приклад #1 chdir() example

<?php

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

chdir('public_html');

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

?>

Наведений вище приклад виведе щось подібне до:

/home/vincent
/home/vincent/public_html

Примітки

Зауваження: When safe mode is enabled, PHP checks whether the directory in which the script is operating has the same UID (owner) as the script that is being executed.

Прогляньте Також

  • getcwd() - Gets the current working directory

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User Contributed Notes 3 notes

up
2
nesk at xakep dot ru
1 year ago
When working with FFI under a PHP ZTS environment, there is no standard way to change the directory with libraries (dll/so/dylib/etc), so to get around this problem, you should use something like this polyfill:

<?php

$directory
= 'path/to/libraries';

switch (\
PHP_OS_FAMILY) {
    case
'Windows':
        \
FFI::cdef('extern unsigned char SetDllDirectoryA(const char* lpPathName);', 'kernel32.dll')
            ->
SetDllDirectoryA($directory)
        ;
        break;

    case
'Linux':
    case
'BSD':
        \
FFI::cdef('int setenv(const char *name, const char *value, int overwrite);')
            ->
setenv('LD_LIBRARY_PATH', $directory, 1)
        ;
        break;

    case
'Darwin':
        \
FFI::cdef('int setenv(const char *name, const char *value, int overwrite);')
            ->
setenv('DYLD_LIBRARY_PATH', $directory, 1)
        ;
        break;
}

?>
up
-5
php dot duke at qik dot nl
13 years ago
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"
up
-18
herwin at snt dot utwente dot nl
15 years ago
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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