File Permission

How i can set owner and group to file in php , i write

chgrp("dompdf/background_image.html",1122)开发者_高级运维;

but this is not working

it Set 99 instead of 1122

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PHP has a chown function available, however you need the permissions to do so, so you probably have to be root.

There is the change group functio also availbe, this is the one u used.

Examples are available there, you need the appropriate privileges. that is probably your problem.

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Take a look at chown and chgrp.

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From chgrp:

Only the superuser may change the group of a file arbitrarily; other users may change the group of a file to any group of which that user is a member.

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Try shell_exec() http://php.net/manual/en/function.shell-exec.php

<?php
$output = shell_exec('chown ownername:groupname file.php');
?>