chdir
(PHP 4, PHP 5)
chdir — Сменить каталог
Описание
bool chdir
( string $directory
)
Изменяет текущий каталог PHP на указанный в качестве параметра каталог . Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки..
См.также описание функции getcwd().
Коментарии
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)
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"
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;
}
?>