PHP | Imagick identifyImage() Function

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(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-19.png');

// Use identifyImage Function
var_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 Function
var_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