<?php
/*
@desc:获取图片真实后缀
@param name 文件名
@return suffix 文件后缀
*/
function getimgsuffix($name) {
$info = getimagesize($name);
$suffix = false;
if($mime = $info[‘mime‘]){
$suffix = explode(‘/‘,$mime)[1];
}
return $suffix;
}
$suffix = getimgsuffix(‘http://192.168.8.81/public/image/01.jpg‘);
echo $suffix;
jpeg
<?php
/*
@desc:获取文件真实后缀
@param name 文件名
@return suffix 文件后缀
*/
function getfilesuffix($name) {
$file = fopen($name, "rb");
$bin = fread($file, 2); // 只读2字节
fclose($file);
$info = @unpack("C2chars", $bin);
$code = intval($info[‘chars1‘] . $info[‘chars2‘]);
$suffix = "unknow";
if($code == 255216){
$suffix = "jpg";
}elseif($code == 7173){
$suffix = "gif";
}elseif($code == 13780){
$suffix = "png";
}elseif($code == 6677){
$suffix = "bmp";
}elseif($code == 7798){
$suffix = "exe";
}elseif($code == 7784){
$suffix = "midi";
}elseif($code == 8297){
$suffix = "rar";
}elseif($code == 7368){
$suffix = "mp3";
}elseif($code == 0){
$suffix = "mp4";
}elseif($code == 8273){
$suffix = "wav";
}
return $suffix;
}
$suffix = getfilesuffix(‘http://192.168.8.81/public/image/01.jpg‘);
echo $suffix;
jpg
原文地址:http://blog.51cto.com/12173069/2126591