(PHP 4, PHP 5, PHP 7)
chdir — Change directory
chdir ( string $directory ) : bool
Changes PHP's current directory to directory
.
directory
The new current directory
Returns true
on success or false
on failure.
Throws an error of level E_WARNING
on failure.
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
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
.
© 1997–2020 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.chdir.php