PHP | exif_imagetype() function

Last Updated : 11 Feb, 2021

The exif_imagetype() function is an inbuilt function in PHP which is used to determine the type of an image.
Syntax:

int exif_imagetype( string $filename )

Parameters:This function accepts a single parameter $filename which holds the name or URL of the image.
Return Value: This function returns an integer corresponding to one of IMAGETYPE constants as given below:

IMAGETYPE_GIF (1)
IMAGETYPE_JPEG (2)
IMAGETYPE_PNG (3)
IMAGETYPE_SWF (4)
IMAGETYPE_PSD (5)
IMAGETYPE_BMP (6)
IMAGETYPE_TIFF_II (7)
IMAGETYPE_TIFF_MM (8)
IMAGETYPE_JPC (9)
IMAGETYPE_JP2 (10)
IMAGETYPE_JPX (11)
IMAGETYPE_JB2 (12)
IMAGETYPE_SWC (13)
IMAGETYPE_IFF (14)
IMAGETYPE_WBMP (15)
IMAGETYPE_XBM (16)
IMAGETYPE_ICO (17)
IMAGETYPE_WEBP (18)

Below given programs illustrate the exif_imagetype() function in PHP:
Program 1: In this example we will check the format of a image file.

php

<?php
// Load an image from PNG URL
$type = exif_imagetype(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png');
 
echo $type;
?>

Output:

3 // which corresponds to IMAGETYPE_PNG

Program 2: In this example we will check if a image file is supported or not.

php

<?php
// Load an image from JPEG URL
$type = exif_imagetype(
'https://media.geeksforgeeks.org/wp-content/uploads/20200123100652/geeksforgeeks12.jpg');
 
if($type > 0 || $type < 19)
{
    echo 'This is a supported image format.';
}
?>