chdir

(PHP 4, PHP 5, PHP 7)

chdirChange directory

Descrierea

bool chdir ( string $directory )

Changes PHP's current directory to directory.

Parametri

directory

The new current directory

Valorile întoarse

Întoarce valoarea TRUE în cazul succesului sau FALSE în cazul eșecului.

Erori/Excepții

Throws an error of level E_WARNING on failure.

Exemple

Example #1 chdir() example

<?php

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

chdir('public_html');

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

?>

Exemplul de mai sus va afișa ceva similar cu:

/home/vincent
/home/vincent/public_html

Note

Notă: Când este activat modul securizat , PHP verifică dacă directorul în care doriți să operați are același UID (proprietar) ca și script-ul care se execută.

A se vedea și

  • getcwd() - Gets the current working directory

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User Contributed Notes 3 notes

up
5
herwin at snt dot utwente dot nl
10 years ago
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)
up
-1
php dot duke at qik dot nl
7 years ago
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"
up
-40
andy dot clark at dial dot pipex dot com
10 years ago
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>';
}
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