(PHP 5)
image_type_to_extension — Get file extension for image type
Returns the extension for the given IMAGETYPE_XXX constant.
One of the IMAGETYPE_XXX constant.
Whether to prepend a dot to the extension or not. Default to TRUE.
A string with the extension corresponding to the given image type.
Example #1 image_type_to_extension() example
<?php
// Create image instance
$im = imagecreatetruecolor(100, 100);
// Save image
imagepng($im, './test' . image_type_to_extension(IMAGETYPE_PNG));
imagedestroy($im);
?>
Note: 이 함수는 GD 이미지 라이브러리가 필요하지 않습니다.