exif_read_data

    (PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

    exif_read_data — Reads the EXIF headers from an image file

    Description

    exif_read_data(
        resource|string $file,
        ?string $required_sections = null,
        bool $as_arrays = false,
        bool $read_thumbnail = false
    ): array|false

    exif_read_data() reads the EXIF headers from an image file. This way you can read meta data generated by digital cameras.

    EXIF headers tend to be present in JPEG/TIFF images generated by digital cameras, but unfortunately each digital camera maker has a different idea of how to actually tag their images, so you can't always rely on a specific Exif header being present.

    Height and Width are computed the same way getimagesize() does so their values must not be part of any header returned. Also, html is a height/width text string to be used inside normal HTML.

    When an Exif header contains a Copyright note, this itself can contain two values. As the solution is inconsistent in the Exif 2.10 standard, the COMPUTED section will return both entries Copyright.Photographer and Copyright.Editor while the IFD0 sections contains the byte array with the NULL character that splits both entries. Or just the first entry if the datatype was wrong (normal behaviour of Exif). The COMPUTED will also contain the entry Copyright which is either the original copyright string, or a comma separated list of the photo and editor copyright.

    The tag UserComment has the same problem as the Copyright tag. It can store two values. First the encoding used, and second the value itself. If so the IFD section only contains the encoding or a byte array. The COMPUTED section will store both in the entries UserCommentEncoding and UserComment. The entry UserComment is available in both cases so it should be used in preference to the value in IFD0 section.

    exif_read_data() also validates EXIF data tags according to the EXIF specification (» http://exif.org/Exif2-2.PDF, page 20).

    Parameters

    file

    The location of the image file. This can either be a path to the file (stream wrappers are also supported as usual) or a stream resource.

    required_sections

    Is a comma separated list of sections that need to be present in file to produce a result array. If none of the requested sections could be found the return value is false.

    FILE FileName, FileSize, FileDateTime, SectionsFound
    COMPUTED html, Width, Height, IsColor, and more if available. Height and Width are computed the same way getimagesize() does so their values must not be part of any header returned. Also, html is a height/width text string to be used inside normal HTML.
    ANY_TAG Any information that has a Tag e.g. IFD0, EXIF, ...
    IFD0 All tagged data of IFD0. In normal imagefiles this contains image size and so forth.
    THUMBNAIL A file is supposed to contain a thumbnail if it has a second IFD. All tagged information about the embedded thumbnail is stored in this section.
    COMMENT Comment headers of JPEG images.
    EXIF The EXIF section is a sub section of IFD0. It contains more detailed information about an image. Most of these entries are digital camera related.

    as_arrays

    Specifies whether or not each section becomes an array. The required_sections COMPUTED, THUMBNAIL, and COMMENT always become arrays as they may contain values whose names conflict with other sections.

    read_thumbnail

    When set to true the thumbnail itself is read. Otherwise, only the tagged data is read.

    Return Values

    It returns an associative array where the array indexes are the header names and the array values are the values associated with those headers. If no data can be returned, exif_read_data() will return false.

    Errors/Exceptions

    Errors of level E_WARNING and/or E_NOTICE may be raised for unsupported tags or other potential error conditions, but the function still tries to read all comprehensible information.

    Changelog

    Version Description
    8.0.0 required_sections is nullable now.
    7.2.0 The file parameter now supports both local files and stream resources.
    7.2.0

    Support for the following EXIF formats were added:

    • Samsung
    • DJI
    • Panasonic
    • Sony
    • Pentax
    • Minolta
    • Sigma/Foveon
    • AGFA
    • Kyocera
    • Ricoh
    • Epson

    Examples

    Example #1 exif_read_data() example

    <?php
    echo "test1.jpg:<br />\n";
    $exif = exif_read_data('tests/test1.jpg', 'IFD0');
    echo     $exif===false ? "No header data found.<br />\n" : "Image contains headers<br />\n";

    $exif = exif_read_data('tests/test2.jpg', 0, true);
    echo     "test2.jpg:<br />\n";
    foreach (    $exif as $key => $section) {
    foreach (    $section as $name => $val) {
    echo     "$key.$name: $val<br />\n";
    }
    }
    ?>

    The first call fails because the image has no header information.

    The above example will output something similar to:

    test1.jpg:
No header data found.
test2.jpg:
FILE.FileName: test2.jpg
FILE.FileDateTime: 1017666176
FILE.FileSize: 1240
FILE.FileType: 2
FILE.SectionsFound: ANY_TAG, IFD0, THUMBNAIL, COMMENT
COMPUTED.html: width="1" height="1"
COMPUTED.Height: 1
COMPUTED.Width: 1
COMPUTED.IsColor: 1
COMPUTED.ByteOrderMotorola: 1
COMPUTED.UserComment: Exif test image.
COMPUTED.UserCommentEncoding: ASCII
COMPUTED.Copyright: Photo (c) M.Boerger, Edited by M.Boerger.
COMPUTED.Copyright.Photographer: Photo (c) M.Boerger
COMPUTED.Copyright.Editor: Edited by M.Boerger.
IFD0.Copyright: Photo (c) M.Boerger
IFD0.UserComment: ASCII
THUMBNAIL.JPEGInterchangeFormat: 134
THUMBNAIL.JPEGInterchangeFormatLength: 523
COMMENT.0: Comment #1.
COMMENT.1: Comment #2.
COMMENT.2: Comment #3end
THUMBNAIL.JPEGInterchangeFormat: 134
THUMBNAIL.Thumbnail.Height: 1
THUMBNAIL.Thumbnail.Height: 1

    Example #2 exif_read_data() with streams available as of PHP 7.2.0

    <?php
    // Open a the file, this should be in binary mode
    $fp = fopen('/path/to/image.jpg', 'rb');

    if (!    $fp) {
    echo     'Error: Unable to open image for reading';
    exit;
    }

    // Attempt to read the exif headers
    $headers = exif_read_data($fp);

    if (!    $headers) {
    echo     'Error: Unable to read exif headers';
    exit;
    }

    // Print the 'COMPUTED' headers
    echo 'EXIF Headers:' . PHP_EOL;

    foreach (    $headers['COMPUTED'] as $header => $value) {
    printf(' %s => %s%s', $header, $value, PHP_EOL);
    }
    ?>

    The above example will output something similar to:

    EXIF Headers:
 Height => 576
 Width => 1024
 IsColor => 1
 ByteOrderMotorola => 0
 ApertureFNumber => f/5.6
 UserComment =>
 UserCommentEncoding => UNDEFINED
 Copyright => Denis
 Thumbnail.FileType => 2
 Thumbnail.MimeType => image/jpeg

    Notes

    Note:

    If mbstring is enabled, exif will attempt to process the unicode and pick a charset as specified by exif.decode_unicode_motorola and exif.decode_unicode_intel. The exif extension will not attempt to figure out the encoding on its own, and it is up to the user to properly specify the encoding for which to use for decoding by setting one of these two ini directives prior to calling exif_read_data().

    Note:

    If the file is used to pass a stream to this function, then the stream must be seekable. Note that the file pointer position is not changed after this function returns.

    See Also

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    ＋add a note

    User Contributed Notes 19 notes

    up
    83
    chadsmith729 at gmail dot com
    11 years ago
    When the new update came out from Apple for iOS6 it provided the ability for iPad, iPod, and iPhones to be able to upload files from the device through Safari. Obviously this will open up an array of implementations where at one point it was just not possible.

    The issue comes when a photo is uploaded it will be dependent on the location of the "button" when the photo was taken. Imagine if you will that you have your iPhone turned with the button at the top and you take a photo. The photo when uploaded to your server might be "upside down".

    The following code will ensure that all uploaded photos will be oriented correctly upon upload:
    <?php
    $image     = imagecreatefromstring(file_get_contents($_FILES['image_upload']['tmp_name']));
    $exif = exif_read_data($_FILES['image_upload']['tmp_name']);
    if(!empty(    $exif['Orientation'])) {
    switch(    $exif['Orientation']) {
    case     8:
    $image = imagerotate($image,90,0);
    break;
    case     3:
    $image = imagerotate($image,180,0);
    break;
    case     6:
    $image = imagerotate($image,-90,0);
    break;
    }
    }
    // $image now contains a resource with the image oriented correctly
    ?>

    What you do with the image resource from there is entirely up to you.

    I hope that this helps you identify and orient any image that's uploaded from an iPad, iPhone, or iPod. Orientation for the photo is the key to knowing how to rotate it correctly.
    up
    3
    Tim
    5 years ago
    The following code:
    <?php
    $data     = exif_read_data('foo.jpg');
    var_dump($data['Keywords']);
    ?>
    produces string(15) "???????????????"

    Adding
    <?php
    ini_set    ('exif.decode_unicode_motorola', 'UCS-2LE');
    ?>
    before the call to exif_red_data produces
    string(15) "landscape;;field"
    up
    6
    darkain at darkain dot com
    16 years ago
    I wanted some quick and easy functions for computing the shutter speed and f-stop. I couldn't find any anywhere, so I made some. It took some research :

    <?php
    function exif_get_float($value) {
    $pos = strpos($value, '/');
    if (    $pos === false) return (float) $value;
    $a = (float) substr($value, 0, $pos);
    $b = (float) substr($value, $pos+1);
    return (    $b == 0) ? ($a) : ($a / $b);
    }

    function     exif_get_shutter(&$exif) {
    if (!isset(    $exif['ShutterSpeedValue'])) return false;
    $apex = exif_get_float($exif['ShutterSpeedValue']);
    $shutter = pow(2, -$apex);
    if (    $shutter == 0) return false;
    if (    $shutter >= 1) return round($shutter) . 's';
    return     '1/' . round(1 / $shutter) . 's';
    }

    function     exif_get_fstop(&$exif) {
    if (!isset(    $exif['ApertureValue'])) return false;
    $apex = exif_get_float($exif['ApertureValue']);
    $fstop = pow(2, $apex/2);
    if (    $fstop == 0) return false;
    return     'f/' . round($fstop,1);
    }
    ?>
    up
    7
    drpain at webster dot org dot za
    12 years ago
    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.
    up
    4
    mafo at mafo removethis dot sk
    17 years ago
    some cameras (most higher models) have position senzor (gyroskope?) and taking-position is wrote in EXIF, here is simple script for automatic rotating images

    <?php
    $exif     = exif_read_data($filename);
    $ort = $exif['IFD0']['Orientation'];
    switch(    $ort)
    {
    case     1: // nothing
    break;

    case     2: // horizontal flip
    $image->flipImage($public,1);
    break;

    case     3: // 180 rotate left
    $image->rotateImage($public,180);
    break;

    case     4: // vertical flip
    $image->flipImage($public,2);
    break;

    case     5: // vertical flip + 90 rotate right
    $image->flipImage($public, 2);
    $image->rotateImage($public, -90);
    break;

    case     6: // 90 rotate right
    $image->rotateImage($public, -90);
    break;

    case     7: // horizontal flip + 90 rotate right
    $image->flipImage($public,1);
    $image->rotateImage($public, -90);
    break;

    case     8: // 90 rotate left
    $image->rotateImage($public, 90);
    break;
    }

    ?>

    $image->rotateImage() is inspired by example of http://php.net/manual/en/function.imagerotate.php
    $image->flipImage() is inspired by http://php.net/manual/en/function.imagecopy.php#42803 (thank you)
    up
    1
    omerg at lucidcode dot com dot tr
    5 years ago
    The example provided for displaying exif array content is not working in recent version because not all entry values are of array type.

    This is an alternative echo loop:

    <?php
    echo "test1.jpg:<br />\n";
    $exif = exif_read_data('tests/test1.jpg', 'IFD0');
    echo     $exif===false ? "No header data found.<br />\n" : "Image contains headers<br />\n";

    $exif = exif_read_data('tests/test2.jpg', 0, true);
    echo     "test2.jpg:<br />\n";
    foreach (    $exif as $key => $section) {

    if (!    is_array ($section)) {
    echo     "$key: $section<br />\n";
    } else {
    foreach (    $section as $name => $val) {
    echo     "$key.$name: $val<br />\n";
    }
    }

    }
    ?>
    up
    1
    TNTcode
    7 years ago
    <?php

    // auto rotates an image file based on exif data from camera
    // if destination file is specified then it saves file there, otherwise it will display it to user
    // note that images already at normal orientation are skipped (when exif data Orientation = 1)

    if(!function_exists("gd_auto_rotate")){
    function     gd_auto_rotate($original_file, $destination_file=NULL){

    $original_extension = strtolower(pathinfo($original_file, PATHINFO_EXTENSION));
    if(isset(    $destination_file) and $destination_file!=''){
    $destination_extension = strtolower(pathinfo($destination_file, PATHINFO_EXTENSION));
    }

    // try to auto-rotate image by gd if needed (before editing it)
    // by imagemagik it has an easy option
    if(function_exists("exif_read_data")){

    $exif_data = exif_read_data($original_file);
    $exif_orientation = $exif_data['Orientation'];

    // value 1 = normal ?! skip it ?!

    if($exif_orientation=='3' or $exif_orientation=='6' or $exif_orientation=='8'){

    $new_angle[3] = 180;
    $new_angle[6] = -90;
    $new_angle[8] = 90;

    // load the image
    if($original_extension == "jpg" or $original_extension == "jpeg"){
    $original_image = imagecreatefromjpeg($original_file);
    }
    if(    $original_extension == "gif"){
    $original_image = imagecreatefromgif($original_file);
    }
    if(    $original_extension == "png"){
    $original_image = imagecreatefrompng($original_file);
    }

    $rotated_image = imagerotate($original_image, $new_angle[$exif_orientation], 0);

    // if no destination file is set, then show the image
    if(!$destination_file){
    header('Content-type: image/jpeg');
    imagejpeg($rotated_image, NULL, 100);
    }

    // save the smaller image FILE if destination file given
    if($destination_extension == "jpg" or $destination_extension=="jpeg"){
    imagejpeg($rotated_image, $destination_file,100);
    }
    if(    $destination_extension == "gif"){
    imagegif($rotated_image, $destination_file);
    }
    if(    $destination_extension == "png"){
    imagepng($rotated_image, $destination_file,9);
    }

    imagedestroy($original_image);
    imagedestroy($rotated_image);

    }
    }
    }
    }

    ?>
    up
    1
    Eion Robb
    9 years ago
    I was needing to use exif_read_data() to read out the orientation flag, only to find that the webhost didn't have the exif extension available for use. Instead, I hacked up a regex that worked fairly well as a replacement

    <?php
    $orientation     = 1;
    if (    function_exists('exif_read_data')) {
    $exif = exif_read_data($filename);
    if (isset(    $exif['Orientation']))
    $orientation = $exif['Orientation'];
    } else if (    preg_match('@\x12\x01\x03\x00\x01\x00\x00\x00(.)\x00\x00\x00@', file_get_contents($filename), $matches)) {
    $orientation = ord($matches[1]);
    }
    ?>
    up
    0
    dbareis at gmail dot com
    4 months ago
    Windows fields are in a "WINXP" section (the format I don't know), but they are also elsewhere including "comments" & "subject" in null terminated "UTF-16LE" format, this code work for me:

    ...
    $PhotoInfo->Comments = GetPhotoValueWindows16Bit($IDFO, 'Comments');
    $PhotoInfo->Subject = GetPhotoValueWindows16Bit($IDFO, 'Subject');

    function GetPhotoValueWindows16Bit(&$Array, $Index)
    {
    $Value16 = GetPhotoValue($Array, $Index);
    if ($Value16 === null)
    $R = null;
    else
    {
    $R = iconv('UTF-16LE', 'UTF-8', $Value16); //Still ends in a null byte
    $R = str_replace("\x00", '', $R); //Remove trailing null (but handle any).
    }
    return $R;
    }
    up
    0
    service at tianex dot com
    10 months ago
    this error happens when get jpeg file exif information

    exif_read_data(): Error reading from file: got=x3FFA(=16378) != itemlen-2=x4325(=17189)
    up
    0
    b at asdflolinternet dot de
    9 years ago
    Problem with "S�o�m�e� �T�e�x�t��" on value(s), exif[IFD0][Title] for example, when they were edited trough windows right click properties and then got read with the read_exif_data() function.
    try:

    $exif_['IFD0']['Title']=mb_convert_encoding($exif_['IFD0']['Title'],"auto","byte2le");

    works on UTF-8 and so.

    //
    // outputs all available character encodings and prints on screen
    // foreach(mb_list_encodings() as $chr)
    // {$test[$chr]=mb_convert_encoding($image[IFD0][Title],'auto',$chr);}
    // exit(print_r($test));
    //
    up
    0
    Clive dot Moore at ma-design dot com
    10 years ago
    Following up on darkain at darkain dot com script for grabbing the ShutterSpeedValue from exif data...
    @http://php.net/manual/en/function.exif-read-data.php

    I have found that the option shown for ShutterSppedValue, can also be ExposureTime in the exif data.

    Also the code as written provides a WRONG return, as the return is always 1 so you get 1/1sec.

    Here is corrected code, or a version that corrects what is obviously not working after 5 years since it was originally developed::

    Here is the updated version for:: $exif[ExposureTime]

    function exif_get_float($value) {
    $pos = strpos($value, '/');
    if ($pos === false) return (float) $value;
    $a = (float) substr($value, 0, $pos);
    $b = (float) substr($value, $pos+1);
    return ($b == 0) ? ($a) : ($a / $b);
    };

    function exif_get_exposureTime(&$exif) {
    if (!isset($exif['ExposureTime'])) return false;
    $apex = exif_get_float($exif['ExposureTime']);
    $shutter = 1/$apex;
    // above 1 sec exposure time::
    if ($shutter <= 1) return round($apex) . ' seconds';

    return '1/' . round(1 / $apex) . 'sec';
    };
    up
    0
    hoangvu4000 at gmail dot com
    11 years ago
    This is function, resize image and don't rotates images have exif info

    PHP must be enabled:
    extension=php_mbstring.dll
    extension=php_exif.dll

    <?php
    function CreateThumbnail($pic,$thumb,$thumbwidth, $quality = 100)
    {

    $im1=ImageCreateFromJPEG($pic);

    //if(function_exists("exif_read_data")){
    $exif = exif_read_data($pic);
    if(!empty(    $exif['Orientation'])) {
    switch(    $exif['Orientation']) {
    case     8:
    $im1 = imagerotate($im1,90,0);
    break;
    case     3:
    $im1 = imagerotate($im1,180,0);
    break;
    case     6:
    $im1 = imagerotate($im1,-90,0);
    break;
    }
    }
    //}
    $info = @getimagesize($pic);

    $width = $info[0];

    $w2=ImageSx($im1);
    $h2=ImageSy($im1);
    $w1 = ($thumbwidth <= $info[0]) ? $thumbwidth : $info[0] ;

    $h1=floor($h2*($w1/$w2));
    $im2=imagecreatetruecolor($w1,$h1);

    imagecopyresampled ($im2,$im1,0,0,0,0,$w1,$h1,$w2,$h2);
    $path=addslashes($thumb);
    ImageJPEG($im2,$path,$quality);
    ImageDestroy($im1);
    ImageDestroy($im2);
    }
    ?>
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    0
    michael [at[ thisiswilson [dot[ com
    15 years ago
    From - darkain at darkain dot com 's example.

    If all the data is from the same image - simply

    <?php
    $exif_data     = exif_read_data ( $_FILES['photo']

    $emake =$exif_data['Make'];
    $emodel = $exif_data['Model'];
    $eexposuretime = $exif_data['ExposureTime'];
    $efnumber = $exif_data['FNumber'];
    $eiso = $exif_data['ISOSpeedRatings'];
    $edate = $exif_data['DateTime'];
    ?>

    will work, I tried using the PEL library, and while pretty cool, I can't for the life understand how to call some things, this is simpler if your system is pretty basic or if you're in a rush. If you have time, try playing with PEL. It's not maintained at the moment though..

    http://pel.sourceforge.net/
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    0
    Anonymous
    17 years ago
    When reading EXIF information from the 'WINXP' group, you may need to change used encoding from the default "ISO-8859-15" to "UTF-8". This can be done in php.ini or in your code:

    <?php
    ini_set    ('exif.encode_unicode', 'UTF-8');

    $exif = exif_read_data('TEST.JPG', 0, true);
    echo     $exif['WINXP']['Title'];
    ?>

    Useful documentation about EXIF:
    http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/EXIF.html
    See also comments next to XPTitle and XPAuthor.
    up
    -1
    iam at thatguy dot co dot za
    10 years ago
    I posted the original version of the function, but after using it for a while I discovered I didn't do enough error checking.

    I have re-factored it somewhat, and it now returns an empty array should it not be able to read the image's exif. If it is able to, it will return the details it was able to retrieve. And this should be without error.

    I am suppressing errors, because if you pass it images which cannot parse, you will get a warning.

    <?php

    # Modified Version of cameraUsed, no longer returns date.
    public function cameraUsed($imagePath)
    {
    # The default empty return
    $return = array(
    'make' => "",
    'model' => "",
    'exposure' => "",
    'aperture' => "",
    'iso' => ""
    );

    // 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);

    # Ensure that we actually got some information
    if (($exif_ifd0 !== false) AND ($exif_exif !== false))
    {
    // Make
    if (@array_key_exists('Make', $exif_ifd0))
    {
    $return['make'] = $exif_ifd0['Make'];
    }

    // Model
    if (@array_key_exists('Model', $exif_ifd0))
    {
    $return['model'] = $exif_ifd0['Model'];
    }

    // Exposure
    if (@array_key_exists('ExposureTime', $exif_ifd0))
    {
    $return['exposure'] = $exif_ifd0['ExposureTime'];
    }

    // Aperture
    if (@array_key_exists('ApertureFNumber', $exif_ifd0['COMPUTED']))
    {
    $return['aperture'] = $exif_ifd0['COMPUTED']['ApertureFNumber'];
    }

    // ISO
    if (@array_key_exists('ISOSpeedRatings',$exif_exif))
    {
    $return['iso'] = $exif_exif['ISOSpeedRatings'];
    }
    }
    }

    # Return either an empty array, or the details which we were able to extrapolate.
    return $return;
    }

    ?>
    up
    -1
    wdierkes at 5dollarwhitebox dot org
    17 years ago
    Using the exif methods to read WINXP data returns unexpected results unless both exif and mbstring are compiled statically. Please reference the following bug reports:

    Bug #31980
    Bug #23105


    Specifically, the last comment on #23105:

    "[8 Apr 2003 4:26pm UTC] edink@php.net

    This cannot be fixed due to the fact that mbstring has been removed from PHP core (it has been 'unbundled') and the rest of core files and other extensions cannot use mbstring functionality when it is compiled as a shared library (dll).
    "

    If exif is compiled statically (--enable-exif) and mbstring compiled as a DSO module (--enable-mbstring=shared) then exif_read_data may only return a single character rather than the entire string.

    Compiling both exif and mbstring statically (--enable-exif --enable-mbstring) resolves the issue.
    up
    -3
    lincolnzsilva at gmail dot com
    16 years ago
    Get some EXIFs fields (easy way):

    <?php
    $exif_make     = exif_read_data ( $_FILES['photo']['tmp_name'] ,'IFD0' ,0 );
    $emake = $exif_make['Make'];

    $exif_model = exif_read_data ( $_FILES['photo']['tmp_name'] ,'IFD0' ,0 );
    $emodel = $exif_model['Model'];

    $exif_exposuretime = exif_read_data ( $_FILES['photo']['tmp_name'] ,'EXIF' ,0 );
    $eexposuretime = $exif_exposuretime['ExposureTime'];

    $exif_fnumber = exif_read_data ( $_FILES['photo']['tmp_name'] ,'EXIF' ,0 );
    $efnumber = $exif_fnumber['FNumber'];

    $exif_iso = exif_read_data ( $_FILES['photo']['tmp_name'] ,'EXIF' ,0 );
    $eiso = $exif_iso['ISOSpeedRatings'];

    $exif_date = exif_read_data ( $_FILES['photo']['tmp_name'] ,'IFD0' ,0 );
    $edate = $exif_date['DateTime'];
    ?>
    up
    -5
    kurt at mandella dot biz
    11 years ago
    Photos processed in Picasa often contain garbage data in the "MAKERNOTE" section and under EXIF.MakerNote, (UTF8) like:

    [MakerNote] => r0~Þæ"î2OÔy  e §…b! ) ) EI "ÐÓ
    #s &0{ 'Û (å -Ð`ÿÿ@ÿÿÿìE è€Ýÿÿ  ÿÿÿÿÿÿx "ú»Dóÿ H ?.}BúIMG:DIGITAL IXUS 100 IS JPEGFirmware Version 1.00s›xÇØÿÿÿ–l¥ÿÿÿ  ØÌÌxŒ ÿÿÌÌŸãÿÿÿ¼Ž(½ (½T‹U’‹d–~Ø“¥ÿÿÿ ÀÿœªãjáÀpgaXfaWb[Te«
    8ú5:Áð-3åÿÿ5»ÿ ‹;ßÊ Š €à€` ¸ ddîÿîÿîÿîÿîÿîÿ
    ÿÿŠ1—ÏàôÉæ׬gªiï

    This can't be written to Blob in MySql. The following code removes the garbage tags.

    $exif = exif_read_data($process_photo, 0, 'EXIF');

    if($exif['IFD0']['Software'] == "Picasa"){

    foreach ($exif as $key => $section){

    if($key != "MAKERNOTE"){
    foreach ($section as $name => $val){
    if($name != 'MakerNote'){
    $exifA[$key][$name] = $val;
    }
    }
    $exifB[$key] = $exifA[$key];
    }
    }
    $serialized_exif = serialize ($exifB);
    }else{
    $serialized_exif = serialize ($exif);
    }
    ＋add a note
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