getimagesize
image_type_to_mime_type
GD and Image 함수 목록
PHP Manual

# image_type_to_extension

(PHP 5)

image_type_to_extension — Get file extension for image type

### 설명

string image_type_to_extension ( int `$imagetype` [, bool `$include_dot` ] )

Returns the extension for the given IMAGETYPE_XXX constant.

### 인수

`imagetype`

  One of the IMAGETYPE_XXX constant.

`include_dot`

  Whether to prepend a dot to the extension or not. Default to `TRUE`.

### 반환값

A string with the extension corresponding to the given image type.

### 예제

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);
?>`

### 주의

> Note: 이 함수는 GD 이미지 라이브러리가 필요하지 않습니다.

getimagesize
image_type_to_mime_type
GD and Image 함수 목록
PHP Manual