(PHP 4 >= 4.0.5, PHP 5, PHP 7, PHP 8)
chroot — Change the root directory
Changes the root directory of the current process to
directory, and changes the current
working directory to "/".
This function is only available to GNU and BSD systems, and only when using the CLI, CGI or Embed SAPI. Also, this function requires root privileges.
Calling this function does not change the values of the __DIR__
and __FILE__ magic constants.
directoryThe path to change the root directory to.
Example #1 chroot() example
<?php
chroot("/path/to/your/chroot/");
echo getcwd();
?>The above example will output:
/
Note: This function is not implemented on Windows platforms.
Note: This function is not available in PHP interpreters built with ZTS (Zend Thread Safety) enabled. To check whether your copy of PHP was built with ZTS enabled, use php -i or test the built-in constant
PHP_ZTS.