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Request #14853 escapeshellarg should return '' for empty argument list
Submitted: 2002-01-04 13:05 UTC Modified: 2003-02-06 21:12 UTC
From: jbriggs at esoft dot com Assigned:
Status: Not a bug Package: Feature/Change Request
PHP Version: 4.1.0 OS: Linux
Private report: No CVE-ID: None
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 [2002-01-04 13:05 UTC] jbriggs at esoft dot com 
If I build a command line like this:
$cmd  = "ls ";
$cmd .= escapeshellarg($file);
system($cmd);

It works fine if $file contains data.  But if $file is empty, $cmd is "ls " instead of "ls ''".

The code would be easier to write if escapeshellarg always returned the two single quotes, even if its argument was blank.

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 [2003-02-06 21:12 UTC] iliaa@php.net 
Sorry, but your problem does not imply a bug in PHP itself.  For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system is not the
appropriate forum for asking support questions. 

Thank you for your interest in PHP.

This seems like a rather unexpected behaviour to me and if the feature you request is added it'll likely break many scripts.
Do your own input validation.
 
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