note 108032 added to function.imagepng

Be careful when using a variable for the file name. PHP behavior with $filename differs when switching to PHP5.4 : PHP5.3 will use $filename='' the same way as $filename=NULL (e.g. no warning) <?php $im = imagecreatetruecolor(10,10); imagepng($im,'',9); # Warning: imagepng(): Filename cannot be empty imagepng($im,NULL,9); # works as expected imagedestroy($im); ?> ---- Server IP: 89.31.146.176 Probable Submitter: 82.227.124.74 ---- Manual Page -- http://www.php.net/manual/en/function.imagepng.php Edit -- https://master.php.net/note/edit/108032 Del: integrated -- https://master.php.net/note/delete/108032/integrated Del: useless -- https://master.php.net/note/delete/108032/useless Del: bad code -- https://master.php.net/note/delete/108032/bad+code Del: spam -- https://master.php.net/note/delete/108032/spam Del: non-english -- https://master.php.net/note/delete/108032/non-english Del: in docs -- https://master.php.net/note/delete/108032/in+docs Del: other reasons-- https://master.php.net/note/delete/108032 Reject -- https://master.php.net/note/reject/108032 Search -- https://master.php.net/manage/user-notes.php