chdir

(PHP 4, PHP 5, PHP 7, PHP 8)

chdirChange directory

Description

chdir(string $directory): bool

Changes PHP's current directory to directory.

Parameters

directory

The new current directory

Return Values

Returns true on success or false on failure.

Errors/Exceptions

Throws an error of level E_WARNING on failure.

Examples

Example #1 chdir() example

<?php

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

chdir('public_html');

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

?>

The above example will output something similar to:

/home/vincent
/home/vincent/public_html

Notes

Caution

If the PHP interpreter has been built with ZTS (Zend Thread Safety) enabled, any changes to the current directory made through chdir() will be invisible to the operating system. All built-in PHP functions will still respect the change in current directory; but external library functions called using FFI will not. You can tell whether your copy of PHP was built with ZTS enabled using php -i or the built-in constant PHP_ZTS.

See Also

  • getcwd() - Gets the current working directory

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