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(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(if($type > 0 || $type < 19){ echo 'This is a supported image format.';}?> |
Output:
This is a supported image format.
Reference: https://www.php.net/manual/en/function.exif-imagetype.php
