PHP Australia Conference 2015

chdir

(PHP 4, PHP 5)

chdirChange de dossier

Description

bool chdir ( string $directory )

chdir() change le dossier courant de PHP en directory.

Liste de paramètres

directory

Le nouveau répertoire courant

Valeurs de retour

Cette fonction retourne TRUE en cas de succès ou FALSE si une erreur survient.

Erreurs / Exceptions

Lance une erreur de niveau E_WARNING si une erreur survient.

Exemples

Exemple #1 Exemple avec chdir()

<?php

// dossier courant
echo getcwd() . "\n";

chdir('public_html');

// dossier courant
echo getcwd() . "\n";

?>

L'exemple ci-dessus va afficher :

/home/vincent
/home/vincent/public_html

Notes

Note: Lorsque le safe-mode est activé, PHP vérifie si le fichier/dossier que vous allez utiliser a le même UID que le script qui est actuellement exécuté.

Voir aussi

  • getcwd() - Retourne le dossier de travail courant

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User Contributed Notes 3 notes

up
1
andy dot clark at dial dot pipex dot com
8 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>';
}
up
1
herwin at snt dot utwente dot nl
8 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
0
php dot duke at qik dot nl
5 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"
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