The Imagick::identifyImage() function is an inbuilt function in PHP which is used to identify an image and return its attributes. Attributes contain image width, height, size, and others. 
Syntax: 
 
array Imagick::identifyImage( $appendRawOutput )
Parameters: This function accepts single parameter $appendRawOutput which is used to stores the value TRUE/FALSE. If it set to TRUE then the raw output is appended to the array.
Return Value: This function returns the image attributes.
Original Image: 
 
Below program illustrates the Imagick::identifyImage() function in PHP:
Program 1: 
 
php
<?php // require_once('path/vendor/autoload.php'); // Create an Imagick Object$imagick = new \Imagick(     // Use identifyImage Functionvar_dump ($imagick->identifyImage());?> | 
Output: 
 
array(11) { 
    ["imageName"]=> string(0) "" 
    ["mimetype"]=> string(9) "image/png" 
    ["format"]=> string(31) "PNG (Portable Network Graphics)" 
    ["units"]=> string(19) "PixelsPerCentimeter" 
    ["type"]=> string(14) "TrueColorAlpha" 
    ["colorSpace"]=> string(4) "sRGB" 
    ["compression"]=> string(3) "Zip" 
    ["fileSize"]=> string(6) "45.4KB" 
    ["geometry"]=> array(2) { ["width"]=> int(667) ["height"]=> int(184) } 
    ["resolution"]=> array(2) { ["x"]=> float(37.8) ["y"]=> float(37.8) } 
    ["signature"]=> string(64) "f64054f5bcb4cfb82c6126eff6d3d4e6be7d0e72d5620033442cecb4b9feabbd" 
}
Program 2: 
 
php
<?php $string = "Computer Science portal for Geeks!"; // Creating new image of above String // and add color and background $im = new Imagick(); $draw = new ImagickDraw(); // Fill the color in image $draw->setFillColor(new ImagickPixel('green')); // Set the text font size $draw->setFontSize(50); $matrix = $im->queryFontMetrics($draw, $string); $draw->annotation(0, 40, $string); $im->newImage($matrix['textWidth'], $matrix['textHeight'], new ImagickPixel('white')); // Draw the image         $im->drawImage($draw); // identifyImage Functionvar_dump ($im->identifyImage());?>  | 
Output: 
 
array(10) { 
    ["imageName"]=> string(0) "" 
    ["mimetype"]=> string(8) "image/x-" 
    ["units"]=> string(9) "Undefined" 
    ["type"]=> string(12) "PaletteAlpha" 
    ["colorSpace"]=> string(4) "sRGB" 
    ["compression"]=> string(9) "Undefined" 
    ["fileSize"]=> string(2) "0B" 
    ["geometry"]=> array(2) { ["width"]=> int(797) ["height"]=> int(62) } 
    ["resolution"]=> array(2) { ["x"]=> float(0) ["y"]=> float(0) } 
    ["signature"]=> string(64) "7c71a28f88b25287580277af67861eaa6f02bd5e473c88aa3bc5c046a761491d" 
}
Reference: http://php.net/manual/en/imagick.identifyimage.php
 

                                    