note 107888 added to function.exif-read-data

Please note that when resizing images with GD and most image processing scripts or applications you will loose the EXIF information. What I did as a workaround is book this information into MySQL before I re-size images. <?php // This function is used to determine the camera details for a specific image. It returns an array with the parameters. function cameraUsed($imagePath) { // Check if the variable is set and if the file itself exists before continuing if ((isset($imagePath)) and (file_exists($imagePath))) { // There are 2 arrays which contains the information we are after, so it's easier to state them both $exif_ifd0 = read_exif_data($imagePath ,'IFD0' ,0); $exif_exif = read_exif_data($imagePath ,'EXIF' ,0); //error control $notFound = "Unavailable"; // Make if (@array_key_exists('Make', $exif_ifd0)) { $camMake = $exif_ifd0['Make']; } else { $camMake = $notFound; } // Model if (@array_key_exists('Model', $exif_ifd0)) { $camModel = $exif_ifd0['Model']; } else { $camModel = $notFound; } // Exposure if (@array_key_exists('ExposureTime', $exif_ifd0)) { $camExposure = $exif_ifd0['ExposureTime']; } else { $camExposure = $notFound; } // Aperture if (@array_key_exists('ApertureFNumber', $exif_ifd0['COMPUTED'])) { $camAperture = $exif_ifd0['COMPUTED']['ApertureFNumber']; } else { $camAperture = $notFound; } // Date if (@array_key_exists('DateTime', $exif_ifd0)) { $camDate = $exif_ifd0['DateTime']; } else { $camDate = $notFound; } // ISO if (@array_key_exists('ISOSpeedRatings',$exif_exif)) { $camIso = $exif_exif['ISOSpeedRatings']; } else { $camIso = $notFound; } $return = array(); $return['make'] = $camMake; $return['model'] = $camModel; $return['exposure'] = $camExposure; $return['aperture'] = $camAperture; $return['date'] = $camDate; $return['iso'] = $camIso; return $return; } else { return false; } } ?> An example of it's use follows: <?php $camera = cameraUsed("/img/myphoto.jpg"); echo "Camera Used: " . $camera['make'] . " " . $camera['model'] . "<br />"; echo "Exposure Time: " . $camera['exposure'] . "<br />"; echo "Aperture: " . $camera['aperture'] . "<br />"; echo "ISO: " . $camera['iso'] . "<br />"; echo "Date Taken: " . $camera['date'] . "<br />"; ?> Will display the following, depending on the data: Camera Used: SONY DSC-S930 Exposure Time: 1/400 Aperture: f/4.3 ISO: 100 Date Taken: 2010:12:10 18:18:45 If the image has been re-sized and the information is no longer available then you should receive the following when echoing the same: Camera Used: Unavailable Exposure Time: Unavailable Aperture: Unavailable ISO: Unavailable Date Taken: Unavailable Some cameras do not capture all the information, for instance Blackberry phones do not record an aperture, or iso and you will get Unavailable for those fields. I hope you find this helpful. ---- Server IP: 195.250.77.48 Probable Submitter: 41.132.71.46 ---- Manual Page -- http://www.php.net/manual/en/function.exif-read-data.php Edit -- https://master.php.net/note/edit/107888 Del: integrated -- https://master.php.net/note/delete/107888/integrated Del: useless -- https://master.php.net/note/delete/107888/useless Del: bad code -- https://master.php.net/note/delete/107888/bad+code Del: spam -- https://master.php.net/note/delete/107888/spam Del: non-english -- https://master.php.net/note/delete/107888/non-english Del: in docs -- https://master.php.net/note/delete/107888/in+docs Del: other reasons-- https://master.php.net/note/delete/107888 Reject -- https://master.php.net/note/reject/107888 Search -- https://master.php.net/manage/user-notes.php