chdir

(PHP 4, PHP 5)

chdircambia directory

Descrizione

bool chdir ( string $directory )

Cambia la directory in uso da parte del PHP in directory. Restituisce TRUE in caso di successo, FALSE in caso di fallimento.

Example #1 Esempio di uso di chdir()

<?php

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

chdir('public_html');

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

?>

Il precedente esempio visualizzerà:

/home/vincent
/home/vincent/public_html

Nota: Quando safe-mode è abilitato, PHP controlla che la directory nella quale si sta lavorando, abbia lo stesso UID dello script che è in esecuzione.

Vedere anche getcwd().

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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
0
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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