image_type_to_mime_type

(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)

image_type_to_mime_type — Get Mime-Type for image-type returned by getimagesize, exif_read_data, exif_thumbnail, exif_imagetype

Description

image_type_to_mime_type(int $image_type): string

The image_type_to_mime_type() function will determine the Mime-Type for an IMAGETYPE constant.

Parameters

image_type: One of the IMAGETYPE_* constants.

Return Values

The returned values are as follows

**Returned values Constants**
`image_type`	Returned value
`IMAGETYPE_GIF`	`image/gif`
`IMAGETYPE_JPEG`	`image/jpeg`
`IMAGETYPE_PNG`	`image/png`
`IMAGETYPE_SWF`	`application/x-shockwave-flash`
`IMAGETYPE_PSD`	`image/psd`
`IMAGETYPE_BMP`	`image/bmp`
`IMAGETYPE_TIFF_II` (intel byte order)	`image/tiff`
`IMAGETYPE_TIFF_MM` (motorola byte order)	`image/tiff`
`IMAGETYPE_JPC`	`application/octet-stream`
`IMAGETYPE_JP2`	`image/jp2`
`IMAGETYPE_JPX`	`application/octet-stream`
`IMAGETYPE_JB2`	`application/octet-stream`
`IMAGETYPE_SWC`	`application/x-shockwave-flash`
`IMAGETYPE_IFF`	`image/iff`
`IMAGETYPE_WBMP`	`image/vnd.wap.wbmp`
`IMAGETYPE_XBM`	`image/xbm`
`IMAGETYPE_ICO`	`image/vnd.microsoft.icon`
`IMAGETYPE_WEBP`	`image/webp`
`IMAGETYPE_AVIF`	`image/avif`

Examples

Example #1 image_type_to_mime_type() example

<?php
header("Content-type: " . image_type_to_mime_type(IMAGETYPE_PNG));
?>

Notes

Note:
This function does not require the GD image library.

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User Contributed Notes

slegersjohn at gmail dot com

11 years ago

If you are working with Images only and you need mime type (e.g. for headers), then this is a fast and reliable technique:
 
<?php
$file = 'path/to/image.jpg';
$image_mime = image_type_to_mime_type(exif_imagetype($file));
?>

It will output true image mime type even if you rename your image file.