PHP | Imagick getImageFormat() Function

The Imagick::getImageFormat() function is an inbuilt function in PHP which is used to get the format of a particular image in a sequence 
Syntax:

string Imagick::getImageFormat( void )

Parameters: This function does not accepts any parameter. 
Return Value: This function returns a string of the image format on success.
Below program illustrates the Imagick::getImageFormat() function in PHP: 
Program 1:
Original Image:

php

<?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;
?>

Output:

PNG

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);

$im->setImageFormat('jpeg');

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

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

Output:

jpeg

Reference: http://php.net/manual/en/imagick.getimageformat.php