Jump to content

Recommended Posts

Metadata Exif

Version 0.9.0  (currently a WIP) for PW 2.8.+ / 3.0+

This is a new attempt to add easy EXIF reading support to ProcessWire. It should be an easy and less error prone API task. Thats why the module internally uses lowercase key names for all EXIF keys and all of your requested key names. But you are not forced to use lowercase key names, you can use any mixed chars for it as you like. You will get back an array or object with keynames / properties named the same (casesensitive) way as you have passed them in with your request.

API

The module adds one hook to the Pageimage: getExif($options = null)

Without any $options passed to the method, it returns all EXIF data in a RAW multidim array.

Passing a simple list with requested key names as array to it returns an array with only the values of those requested keynames.

If you want change the output from array to object, you can use the a boolean "toObject" set to true. Additionally to this and / or any other option, you need to put your requested keynames list to the option "keys".

$rawArray = $image->getExif();

$options = array('Whitebalance', 'Flash', 'ISOSpeedRatings', 'FNumber', 'UserComment');
$array = $image->getExif($options);

$options = array('toObject' => true, 'keys' => array('whitebalance', 'flash', 'isospeedratings', 'fnumber', 'usercomment'));
$object = $image->getExif($options);

 

Possible options are

Quote

              keys = array,
                       a list with case insensitive keynames

              thumbnail = bool,
                       you can set thumbnail explicitly as own option,
                       or you can add thumbnail as keyname to keys

              toObject = bool,
                       if is false or missing, an array is returned

              unformatted = bool,
                       if explicitly set to true, you will get back unformatted (raw) values

              returnRaw = bool,
                       when no $options are set, or no $options['keys'] are set,
                       or explicitly this param is set to true,
                       the complete RAW EXIF data is returned

 

A working example

    $options = array(
        'keys' => array('ISOSpeedRatings', 'FNumber', 'Flash')
    );
    echo "<table><tr>";
    foreach($options['keys'] as $key) echo "<th>{$key}</th>";
    echo "</tr>";
    foreach($page->images as $image) {
        $exif = $image->getExif($options);
        echo "<tr>";
        foreach($exif as $value) echo "<td>$value</td>";
        echo "</tr>";
    }
    echo "</table>";

 

This will output something like:

Quote
ISOSpeedRatings    FNumber    Flash
320    f/2.2    Flash did not fire, compulsory flash mode
100    f/4.0    Flash did not fire, compulsory flash mode

 

With the boolean option "unformatted" passed as true, the output would look like:

Quote
ISOSpeedRatings    FNumber    Flash
320    11/5    16
100    40/10    16

 

For some keys, that only store something like integer values, what are not very meaningful to most of us, the module contain xyzFormatted methods. This way, it is easy to enhance and maintain the module in the future. :)

 

Help wanted

It would be nice if some of you test the module and report back if the intended API suites your needs. And you are very welcome to post suggestions for which keys you want to have a ...Formatted method.

 

Thank you!

https://github.com/horst-n/MetadataExif

 

  • Like 12

Share this post


Link to post
Share on other sites

Hi, Thanks for the great module.

I'm trying to use this for a single image, however, i'm unable to get this to work for just the first image in multi-image field.

Share this post


Link to post
Share on other sites

how does your code look like for getting the (first) image from your field and getting the exif information?

Share this post


Link to post
Share on other sites

and what is the outcome?

can you try

var_dump($page->galleryimages->first()->getExif('FNumber'));

 

Share this post


Link to post
Share on other sites
5 minutes ago, horst said:

var_dump($page->galleryimages->first()->getExif('FNumber'));

returns NULL

Share this post


Link to post
Share on other sites
var_dump(count($page->galleryimages));
$image = $page->galleryimages->first();
var_dump($image->url);
var_dump($image->getExif());

please verify that:

  • your field has at least one image
  • that the image is of type jpeg
  • that it (the original version) contains EXIF-data
  • that it contain an entry FNumber

 

Share this post


Link to post
Share on other sites
1 minute ago, horst said:

please verify that:

  • your field has at least one image
  • that the image is of type jpeg
  • that it (the original version) contains EXIF-data
  • that it contain an entry FNumber

 

Yes I can confirm all of this. The multi-image field has two images. Using your example array from the first post of this thread I can see Exif information being returned for both. Both files are jpg type files.

See array information returned from your working example code below.

 

Screenshot at Nov 27 17-12-27.png

Share this post


Link to post
Share on other sites
17 minutes ago, horst said:

var_dump(count($page->galleryimages));

returns - int(2)

Quote

$image = $page->galleryimages->first();

Returns - nothing.
 

Quote

var_dump($page->galleryimages->url);

returns - string(36) "/photography/site/assets/files/1031/" 

Quote

var_dump($page->galleryimages->getExif());

returns - array(2) { ["apc_0046.jpg"]=> NULL ["img_0335.jpg"]=> NULL }

Share this post


Link to post
Share on other sites

your url does not contain an image name, it only points to the folder.

and the last var_dump should get the EXIf from the single image, not from the image collection!!

Share this post


Link to post
Share on other sites
Quote

var_dump($page->galleryimages->first()->getExif());

Notice: Undefined offset: 0 in /Applications/XAMPP/xamppfiles/htdocs/photography/site/modules/MetadataExif/MetadataExif.module on line 44
array(5) { ["FILE"]=> array(6) { ["FileName"]=> string(12) "apc_0046.jpg" ["FileDateTime"]=> int(1511813872) ["FileSize"]=> int(1160717) ["FileType"]=> int(2) ["MimeType"]=> string(10) "image/jpeg" ["SectionsFound"]=> string(30) "ANY_TAG, IFD0, THUMBNAIL, EXIF" } ["COMPUTED"]=> array(9) { ["html"]=> string(26) "width="2797" height="3496"" ["Height"]=> int(3496) ["Width"]=> int(2797) ["IsColor"]=> int(1) ["ByteOrderMotorola"]=> int(0) ["ApertureFNumber"]=> string(5) "f/2.2" ["Copyright"]=> string(20) "photography" ["Thumbnail.FileType"]=> int(2) ["Thumbnail.MimeType"]=> string(10) "image/jpeg" } ["IFD0"]=> array(10) { ["ImageDescription"]=> string(36) "time flies" ["Make"]=> string(5) "Apple" ["Model"]=> string(14) "iPhone 6s Plus" ["XResolution"]=> string(5) "240/1" ["YResolution"]=> string(5) "240/1" ["ResolutionUnit"]=> int(2) ["Software"]=> string(49) "Adobe Photoshop Lightroom Classic 7.0 (Macintosh)" ["DateTime"]=> string(19) "2017:11:27 16:17:21" ["Copyright"]=> string(20) "j.sobers.photography" ["Exif_IFD_Pointer"]=> int(302) } ["THUMBNAIL"]=> array(6) { ["Compression"]=> int(6) ["XResolution"]=> string(4) "72/1" ["YResolution"]=> string(4) "72/1" ["ResolutionUnit"]=> int(2) ["JPEGInterchangeFormat"]=> int(896) ["JPEGInterchangeFormatLength"]=> int(17303) } ["EXIF"]=> array(26) { ["ExposureTime"]=> string(6) "1/2400" ["FNumber"]=> string(5) "22/10" ["ExposureProgram"]=> int(2) ["ISOSpeedRatings"]=> int(25) ["ExifVersion"]=> string(4) "0230" ["DateTimeOriginal"]=> string(19) "2017:07:10 11:47:22" ["DateTimeDigitized"]=> string(19) "2017:07:10 11:47:22" ["ShutterSpeedValue"]=> string(16) "11228819/1000000" ["ApertureValue"]=> string(15) "2275007/1000000" ["BrightnessValue"]=> string(8) "8488/781" ["ExposureBiasValue"]=> string(3) "0/1" ["MeteringMode"]=> int(5) ["Flash"]=> int(16) ["FocalLength"]=> string(5) "83/20" ["SubjectLocation"]=> array(4) { [0]=> int(2015) [1]=> int(1511) [2]=> int(2217) [3]=> int(1330) } ["SubSecTimeOriginal"]=> string(3) "208" ["SubSecTimeDigitized"]=> string(3) "208" ["ColorSpace"]=> int(1) ["SensingMethod"]=> int(2) ["SceneType"]=> string(1) "" ["ExposureMode"]=> int(0) ["WhiteBalance"]=> int(0) ["FocalLengthIn35mmFilm"]=> int(29) ["UndefinedTag:0xA432"]=> array(4) { [0]=> string(5) "83/20" [1]=> string(5) "83/20" [2]=> string(4) "11/5" [3]=> string(4) "11/5" } ["UndefinedTag:0xA433"]=> string(5) "Apple" ["UndefinedTag:0xA434"]=> string(39) "iPhone 6s Plus back camera 4.15mm f/2.2" } }

 

Quote

 

var_dump($page->galleryimages->first()->url);

 

 

string(48) "/photography/site/assets/files/1031/apc_0046.jpg"

 

Sorry about that, i corrected my mistake. see above.

Share this post


Link to post
Share on other sites

Sorry, now I see that you are using a single value string as $options. This is not possible.

Please refer to the examples above: you need to pass an array to the function, also if you want to retrieve a single value:

$image->getExif( array('FNumber') );

 

Share this post


Link to post
Share on other sites
Quote

echo $page->galleryimages->first()->getExif( array('FNumber') );

Returned :

Quote

Notice: Array to string conversion in /Applications/XAMPP/xamppfiles/htdocs/photography/site/templates/clientgallery.php on line 9
Array

 

Share this post


Link to post
Share on other sites

you need to echo out your desired array key, or object property, depending on what you choosed.

You choosed an array for the return, therefore you need to output the key "FNumber" of the array:

$result = $page->galleryimages->first()->getExif( array('FNumber') );

// output the value for one key of the returned array
echo $result['FNumber'];

// if you have choosen the result as object, you would use
echo $result->FNumber;

This all you can read in the initial post of this thread.

  • Thanks 1

Share this post


Link to post
Share on other sites

Hi Horst,

With your instructions and help, I got it to work.

Thanks again for working with me in understanding proper methods for rendering the values I needed.

 

For Future reference for anyone else(including myself if I forget )... There are two methods for rendering data from Metadata EXIF module.

Array Method:

// output the value for one key of the returned array
$firstGalleryImage = $page->galleryimages->first()->getExif( array('FNumber') );
echo $firstGalleryImage['FNumber'];

Object Method:

// if you have choosen the result as object, you would use
$options = array('toObject' => true, 'keys' => array('FNumber'));
$object = $page->galleryimages->first()->getExif($options);
echo $object->FNumber; 

 

  • Like 1

Share this post


Link to post
Share on other sites

Hi @horst,

Thanks for this module!

It would be great if the module alerted the user somehow if the required PHP exif extension is not installed. I spent some time trying to work out why I couldn't get any data back from images and it wasn't until I saw this in the module code...

if(!function_exists('exif_read_data')) return null;

...that I realised my local WAMP stack didn't have the exif extension enabled.

Share this post


Link to post
Share on other sites
10 hours ago, Robin S said:

It would be great if the module alerted the user somehow if the required PHP exif extension is not installed.

What do you think would be the best way? Returning false or throwing an exception?

 

Share this post


Link to post
Share on other sites
7 hours ago, horst said:

Returning false or throwing an exception?

I think the getExif() method should throw an exception if the module requirements aren't met.

But the module could also check for this when it's installed. Unfortunately I don't think it's possible to include PHP extensions in the "requires" item of getModuleInfo() but the Module documentation says (after correcting typo):

Quote

If the install() method determines that the module cannot be installed for some reason, it should throw a WireException.

So the install method could be this:

public function ___install() {
	if(!function_exists('exif_read_data')) {
		throw new WireException('MetadataExif requires the PHP exif extension.');
	};
}

 

Share this post


Link to post
Share on other sites

Many thanks for the suggestions, @Robin S

I think the main check / exception must be in the getExif method. 

A check during install will be useless when deploying a site folder from local to stage or live. But it is no harm to have it too. 👍

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By d'Hinnisdaël
      Happy new year, everybody 🥬
      I've been sitting on this Dashboard module I made for a client and finally came around to cleaning it up and releasing it to the wider public. This is how it looks.
      ProcessWire Dashboard

      If anyone is interested in trying this out, please go ahead! I'd love to get some feedback on it. If this proves useful and survives some real-world testing, I'll add this to the module directory.
      Download
      You can find the latest release on Github.
      Documentation
      Check out the documentation to get started. This is where you'll find information about included panel types and configuration options.
      Custom Panels
      My goal was to make it really simple to create custom panels. The easiest way to do that is to use the panel type template and have it render a file in your templates folder. This might be enough for 80% of all use cases. For anything more complex (FormBuilder submissions? Comments? Live chat?), you can add new panel types by creating modules that extend the DashboardPanel base class. Check out the documentation on custom panels or take a look at the HelloWorld panel to get started. I'm happy to merge any user-created modules into the main repo if they might be useful to more than a few people.
       Disclaimer
      This is a pre-release version. Please treat it as such — don't install it on production sites. Just making sure 🍇
      Roadmap
      These are the things I'm looking to implement myself at some point. The wishlist is a lot longer, but those are the 80/20 items that I probably won't regret spending time on.
      Improve documentation & add examples ⚙️ Panel types Google Analytics ⚙️ Add new page  🔥 Drafts 🔥 At a glance / Page counter 404s  Layout options Render multiple tabs per panel panel groups with heading and spacing between ✅ panel wrappers as grid item (e.g. stacked notices) ✅ Admin themes support AdminThemeReno and AdminThemeDefault ✅ Shortcuts panel add a table layout with icon, title & summary ✅ Chart panel add default styles for common chart types ✅ load chart data from JS file (currently passed as PHP array) Collection panel support image columns ✅ add buttons: view all & add new ✅
    • By Pip
      Hi everyone!
      I'm trying out the Login/Register module for my site. Noted that the module assigns the newly registered user to login-register role. 
      Once you modify the login-register role's permissions, particularly adding page-edit, the new member role will be set to guest. 
      Thing is I'd like to grant my new users the power to create their own pages. Any advice? 
      Thanks. 
    • By Gadgetto
      SnipWire - Snipcart integration for ProcessWire
      Snipcart is a powerful 3rd party, developer-first HTML/JavaScript shopping cart platform. SnipWire is the missing link between Snipcart and the content management framework ProcessWire.
      With SnipWire, you can quickly turn any ProcessWire site into a Snipcart online shop. The SnipWire plugin helps you to get your store up and running in no time. Detailed knowledge of the Snipcart system is not required.
      SnipWire is free and open source licensed under Mozilla Public License 2.0! A lot of work and effort has gone into development. It would be nice if you could donate an amount to support further development:

      Status update links (inside this thread) for SnipWire development
      2020-07-03 -- SnipWire 0.8.7 (beta) released! Fixes some small bugs and adds an indicator for TEST mode 2020-04-06 -- SnipWire 0.8.6 (beta) released! Adds support for Snipcart subscriptions and also fixes some problems 2020-03-21 -- SnipWire 0.8.5 (beta) released! Improves SnipWires webhooks interface and provides some other fixes and additions 2020-03-03 -- SnipWire 0.8.4 (beta) released! Improves compatibility for Windows based Systems. 2020-03-01 -- SnipWire 0.8.3 (beta) released! The installation and uninstallation process has been heavily revised. 2020-02-08 -- SnipWire 0.8.2 (beta) released! Added a feature to change the cart and catalogue currency by GET, POST or SESSION param 2020-02-03 -- SnipWire 0.8.1 (beta) released! All custom classes moved into their own namespaces. 2020-02-01 -- SnipWire is now available via ProcessWire's module directory! 2020-01-30 -- SnipWire 0.8.0 (beta) first public release! (module just submitted to the PW modules directory) 2020-01-28 -- added Custom Order Fields feature (first SnipWire release version is near!) 2020-01-21 -- Snipcart v3 - when will the new cart system be implemented? 2020-01-19 -- integrated taxes provider finished (+ very flexible shipping taxes handling) 2020-01-14 -- new date range picker, discount editor, order notifiactions, order statuses, and more ... 2019-11-15 -- orders filter, order details, download + resend invoices, refunds 2019-10-18 -- list filters, REST API improvements, new docs platform, and more ... 2019-08-08 -- dashboard interface, currency selector, managing Orders, Customers and Products, Added a WireTabs, refinded caching behavior 2019-06-15 -- taxes provider, shop templates update, multiCURL implementation, and more ... 2019-06-02 -- FieldtypeSnipWireTaxSelector 2019-05-25 -- SnipWire will be free and open source Plugin Key Features
      Fast and simple store setup Full integration of the Snipcart dashboard into the ProcessWire backend (no need to leave the ProcessWire admin area) Browse and manage orders, customers, discounts, abandoned carts, and more Multi currency support Custom order and cart fields Process refunds and send customer notifications from within the ProcessWire backend Process Abandoned Carts + sending messages to customers from within the ProcessWire backend Complete Snipcart webhooks integration (all events are hookable via ProcessWire hooks) Integrated taxes provider (which is more flexible then Snipcart own provider) Useful Links
      SnipWire in PW modules directory SnipWire Docs (please note that the documentation is a work in progress) SnipWire @GitHub (feature requests and suggestions for improvement are welcome - I also accept pull requests) Snipcart Website  

       
      ---- INITIAL POST FROM 2019-05-25 ----
       
    • By Sten
      Hello
      Till now I hacked something with the twig template but it works no more with new PW versions so I look forward to create a module. I am working on a site in multiple languages : French, English, Italian, German, Spanish, Portuguese, Hebrew, Russian. The new posts are entered in any language with a field for language. Till now, I got twig files to get the translations with constants defined for each part of the pages.
      So I'd like to create a module to include theses files added according to the url /fr/en/...
      Have you some observations to do before I begin about the direction to take ?
      Thank you
    • By Mats
      BETA: SplashAndGrab
      https://github.com/madebymats/InputfieldSplashAndGrab
      This module attaches a search input to selected image fields that lets you search and download images from Unsplash.
      (Unsplash is a stock photo service where you can download images for free and use as you wish. No strings attached.)   
      You can search by string, colors, orientation/crop and order by relevance or time published
      I find Unsplash useful both for placeholder images when building sites but also as a time saver for editors if they don’t have any images at hand, just search, download and publish.

      Thanks to @apeisa for building the  FlickrInputField Module and @Robin S for AddImageUrls,  took a lot ideas and code from those modules.
×
×
  • Create New...