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chdir
Change directory
(PHP 4, PHP 5)
ExamplesExample 503. chdir() example<?php The above example will output something similar to: /home/vincent Notes
Note:
When safe mode is enabled, PHP checks whether the directory in which you are about to operate has the same UID (owner) as the script that is being executed.
See Also
Code Examples / Notes » chdirherwin
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) andy dot clark
This only changes the directory for PHP, the output directory stays the same. If you are trying to access images from a relative path and you use the following then it will fail to render the image: chdir ('images'); if (file_exists('php.gif')) { echo '<html>'; echo '<body>'; echo '<img src="php.gif">'; echo '</body></html>'; } //However, it is possible to use the <base> tag in the header to change the directory for the resulting HTML, as you can see however this requires you to put the full path in place. chdir ('images'); if (file_exists('php.gif')) { echo '<html>'; echo '<head><base href = "http://uk.php.net/images/"></head>'; echo '<body>'; echo '<img src="php.gif">'; echo '</body></html>'; } jeprubio _at_ gmail dot com
If you run this script when $sym_dir is a symbolic link to a directory: echo getcwd()."\n"; chdir ($sym_dir); chdir ('../'); echo getcwd()."\n"; It returns for example: /dades/loc/real/mapes/navteq/anloc /mapes/anloc It will not return to the previous directory, it returns to the parent of the real directory where it links the symbolic link. It's not necessary a bug but I think it's important to have present this. It could be solved saving the current directory and then returning to it. For example: $cwd = getcwd(); echo getcwd()."\n"; chdir ($sym_dir); chdir ($cwd); echo getcwd()."\n"; It returns: /dades/loc/real/mapes/navteq/anloc /dades/loc/real/mapes/navteq/anloc Have fun :) ------- Josep Rubio (Anloc S.L. www.anloc.net) |