(PHP 4 >= 4.0.2, PHP 5, PHP 7, PHP 8)
imagetypes — Return the image types supported by this PHP build
This function has no parameters.
Returns a bit-field corresponding to the image formats supported by the
version of GD linked into PHP. The following bits are returned,
IMG_AVIF | IMG_BMP |
IMG_GIF | IMG_JPG |
IMG_PNG | IMG_WBMP |
IMG_XPM | IMG_WEBP.
Example #1 Checking for PNG support
<?php
if (imagetypes() & IMG_PNG) {
echo "PNG Support is enabled";
}
?>In case anyone is wondering what values these constants have
<?php
$imagetypes = array('IMG_AVIF', 'IMG_BMP', 'IMG_GIF', 'IMG_JPG', 'IMG_PNG', 'IMG_WBMP', 'IMG_XPM', 'IMG_WEBP');
foreach ($imagetypes as $imagetype) {
echo constant($imagetype) . "\t" . $imagetype . "\r\n";
}
/* would output
256 IMG_AVIF
64 IMG_BMP
1 IMG_GIF
2 IMG_JPG
4 IMG_PNG
8 IMG_WBMP
16 IMG_XPM
32 IMG_WEBP
*/
?>