PHP简单方法判断文件是否是图片 PHP best way to check if file is an image

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

exif_imagetype判断一个图像的类型

图像类型常量
常量
1 IMAGETYPE_GIF
2 IMAGETYPE_JPEG
3 IMAGETYPE_PNG
4 IMAGETYPE_SWF
5 IMAGETYPE_PSD
6 IMAGETYPE_BMP
7 IMAGETYPE_TIFF_II(Intel 字节顺序)
8 IMAGETYPE_TIFF_MM(Motorola 字节顺序)
9 IMAGETYPE_JPC
10 IMAGETYPE_JP2
11 IMAGETYPE_JPX
12 IMAGETYPE_JB2
13 IMAGETYPE_SWC
14 IMAGETYPE_IFF
15 IMAGETYPE_WBMP
16 IMAGETYPE_XBM
<?php

if (exif_imagetype("image.gif") != IMAGETYPE_GIF) {
    echo "The picture is not a gif";
}

if (in_array(exif_imagetype("path/to/file"), array(IMAGETYPE_GIF , IMAGETYPE_JPEG ,IMAGETYPE_PNG , IMAGETYPE_BMP))) {
    echo "This is a picture ";
}

?>

 

本文:PHP简单方法判断文件是否是图片 PHP best way to check if file is an image

Leave a Reply