PHP | Imagick getImageFormat() Function

<?php 
// require_once('path/vendor/autoload.php');
 
// Create an Imagick Object
$image = new Imagick(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-15.png');
 
// Use getImageFormat function to find the formats 
// of image
 
$res= $image->getImageFormat();
 
// Display the format sequence of image
echo $res; 
?>

<?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);

$im->setImageFormat('jpeg');

// Imagick function to get format of created image
$res= $im->getImageFormat();

// Display the format sequence of image
echo $res;
?>