note 77481 added to function.finfo-file

to check images on unix based systems its much better to use the identify command provided by image magic as it provides accurate results about all files <?php function is_jpg($fullpathtoimage){ if(file_exists($fullpathtoimage)){ exec("identify $fullpathtoimage",$out); //using system() echos STDOUT automatically if(!empty($out)){ //identify returns an empty result to php //if the file is not an image $info = $out[0]; $info = explode(' ',$out[0]); //^IF THE FILENAME CONTAINS SPACES //^THIS WILL NOT WORK...be creative $type = $info[1]; if($type == 'JPEG'){ return true; } } } return false; } ?> identify can process all types of images that are web friendly sample output: ./image/someimage.jpg JPEG 150x112 150x112+0+0 DirectClass 8-bit 4.54688kb if you dont want to control the image name or want to support spaces use: escapeshellarg() http://us2.php.net/manual/en/function.escapeshellarg.php function links: exec() -- http://us2.php.net/manual/en/function.exec.php explode() -- http://us2.php.net/manual/en/function.explode.php ---- Server IP: 64.71.164.2 Probable Submitter: 76.80.75.125 ---- Manual Page -- http://www.php.net/manual/en/function.finfo-file.php Edit -- https://master.php.net/note/edit/77481 Del: integrated -- https://master.php.net/note/delete/77481/integrated Del: useless -- https://master.php.net/note/delete/77481/useless Del: bad code -- https://master.php.net/note/delete/77481/bad+code Del: spam -- https://master.php.net/note/delete/77481/spam Del: non-english -- https://master.php.net/note/delete/77481/non-english Del: in docs -- https://master.php.net/note/delete/77481/in+docs Del: other reasons-- https://master.php.net/note/delete/77481 Reject -- https://master.php.net/note/reject/77481 Search -- https://master.php.net/manage/user-notes.php