Imagick::getImageProfiles
The getImageProperties function in PHP returns an array of property keys available for an image. To get these property values, you use getImageProperty function, giving it one of the available keys provided by the getImageProperties function result. For some images, you may have a lot of properties and for some, you may have few. The two that almost every image seems to have are "date:create" and "date:modify", but some images may have forty or more properties, some titled "exif:Compression", "photoshop:Credit", "jpeg:colorspace", "rdf:Alt", "stRef:documentID", and "xap:CreatorTool." PNG files will also have properties like "png:IHDR.bit_depth" and "png:IHDR.width,height." So far, it appears generally that GIF and BMP files, being simpler, have fewer properties, whereas JPEG and PNG files, being more complicated, have much wider array of properties. It seems incredibly useful in document management.
And now, some sample code and results :
<?php
// Author: holdoffhunger@gmail.com
// Imagick Type
// ---------------------------------------------
$imagick_type = new Imagick();
// Open File
// ---------------------------------------------
$file_to_grab = "image_workshop_directory/test.png";
$file_handle_for_viewing_image_file = fopen($file_to_grab, 'a+');
// Grab File
// ---------------------------------------------
$imagick_type->readImageFile($file_handle_for_viewing_image_file);
// Get Image Properties
// ---------------------------------------------
$imagick_type_properties = $imagick_type->getImageProperties('*', FALSE);
// Print Image Properties
// ---------------------------------------------
print("<pre>");
print_r($imagick_type_properties);
// Print Each Individual, Image Property
// ---------------------------------------------
foreach($imagick_type_properties as $value)
{
print("$value --- ");
print($imagick_type->getImageProperty("$value"));
print("<br><br>");
}
print("</pre>");
?>
Results of this done on a standard PNG image :
Array
(
[0] => date:create
[1] => date:modify
[2] => png:cHRM
[3] => png:gAMA
[4] => png:IHDR.bit_depth
[5] => png:IHDR.color_type
[6] => png:IHDR.interlace_method
[7] => png:IHDR.width,height
[8] => png:sRGB
)
date:create --- 2012-05-19T18:26:45-05:00
date:modify --- 2012-05-19T18:26:45-05:00
png:cHRM --- chunk was found (see Chromaticity, above)
png:gAMA --- gamma=0.45455 (See Gamma, above)
png:IHDR.bit_depth --- 8
png:IHDR.color_type --- 2
png:IHDR.interlace_method --- 0
png:IHDR.width,height --- 320, 320
png:sRGB --- intent=0 (See Rendering intent)
Imagick::getImageProperties
(PECL imagick 2.0.0)
Imagick::getImageProperties — Retourne les propriétés EXIF de l'image
Description
array Imagick::getImageProperties
([ string
$pattern = "*"
[, bool $only_names = true
]] )
Retourne toutes les propriétés de l'image, qui satisfont un modèle.
Si TRUE est passé comme second paramètre, seul les noms des propriétés
sont retournés. Cette méthode n'est disponible que si Imagick a été compilé avec ImageMagick version 6.3.6 ou supérieur.
Liste de paramètres
-
pattern -
Le modèle pour les noms de propriétés.
-
only_names -
S'il faut retourner uniquement les noms des propriétés. Si
FALSEest fourni, alors les valeurs seront aussi retournées.
Valeurs de retour
Retourne un tableau contenant les propriétés de l'image, ou leurs noms.
Exemples
Exemple #1 Exemple avec Imagick::getImageProperties()
Exemple d'extraction d'informations EXIF.
<?php
/* Crée un objet */
$im = new imagick("/path/to/example.jpg");
/* Lit les informations EXIF */
$exifArray = $im->getImageProperties("exif:*");
/* Passe en revue les propriétés EXIF */
foreach ($exifArray as $name => $property)
{
echo "{$name} => {$property}<br />\n";
}
?>
add a note
User Contributed Notes
Imagick::getImageProperties
holdoffhunger at gmail dot com
20-May-2012 01:29
www dot query at gmail dot com
08-Sep-2011 01:58
To access a photograph's EXIF data an alternative method is the normal PHP Exif function.
<?php
$exif_data = exif_read_data($pic1);
$edate = $exif_data['DateTime'];
?>
See: http://php.net/manual/en/book.exif.php
mhufford
03-Aug-2009 04:03
ImageMagick only supports setting a very small number of EXIF properties.
See http://www.imagemagick.org/discourse-server/viewtopic.php?t=14234