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 — Returns the image properties
Description
array Imagick::getImageProperties
([ string
$pattern = "*"
[, bool $only_names = true
]] )
Returns all associated properties that match the pattern. If TRUE is passed as second parameter
only the property names are returned. This method is available if Imagick has been compiled against ImageMagick version 6.3.6 or newer.
Parameters
-
pattern -
The pattern for property names.
-
only_names -
Whether to return only property names. If
FALSEthen also the values are returned
Return Values
Returns an array containing the image properties or property names.
Examples
Example #1 Using Imagick::getImageProperties():
An example of extracting EXIF information.
<?php
/* Create the object */
$im = new imagick("/path/to/example.jpg");
/* Get the EXIF information */
$exifArray = $im->getImageProperties("exif:*");
/* Loop trough the EXIF properties */
foreach ($exifArray as $name => $property)
{
echo "{$name} => {$property}<br />\n";
}
?>
add a note
User Contributed Notes
Imagick::getImageProperties
holdoffhunger at gmail dot com
19-May-2012 11:29
www dot query at gmail dot com
08-Sep-2011 11:58
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 02:03
ImageMagick only supports setting a very small number of EXIF properties.
See http://www.imagemagick.org/discourse-server/viewtopic.php?t=14234