(PECL imagick 2.0.0)
Imagick::getImageProperties — Returns the image properties
$pattern = "*"
   [, bool $include_values = true
  ]] )
   Returns all associated properties that match the pattern. If FALSE is passed as second parameter
   only the property names are returned. 此方法在Imagick基于ImageMagick 6.3.6以上版本编译时可用。
  
patternThe pattern for property names.
include_values
      Whether to return only property names. If FALSE then only property names will be returned.
      
Returns an array containing the image properties or property names.
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"; 
}
?>