PHP;">
PHP
upload($_FILES['file']);
function upload($file){
if($file['error']!=0){
return false;
}
//3M
$max_size = 3145728;
if($max_size<$file['size']){
return false;
}
//设置一个后缀名与mime的映射关系
$type_map = array(
'.jpeg'=>array('image/jpeg','image/pjpeg'),'.jpg'=>array('image/jpeg','.png'=>array('image/png','image/x-png'),'.gif'=>array('image/gif')
);
//后缀
$allow_ext_list = array('.jpeg','.png','.jpg');
$ext = strtolower(strrchr($file['name'],'.'));
if(!in_array($ext,$allow_ext_list)){
echo '
不支持该
图片格式';
return false;
}
//MIME
$allow_mime_list = array();
foreach($allow_ext_list as $val){
$allow_mime_list = array_merge($allow_mime_list,$type_map[$val]);
}
//浏览器提供信息坚持
$allow_mime_list = array_unique($allow_mime_list);
if(!in_array($file['type'],$allow_mime_list)){
echo '
不支持该
图片格式';
return false;
}
//
PHP自身检查
$file_mime = new Finfo(FILEINFO_MIME_TYPE);
$mime = $file_mime->file($file['tmp_name']);
if(!in_array($mime,$allow_mime_list)){
echo '
不支持该
图片格式';
return false;
}
//目录存储
$up_loadpath = './';
$sub_dir = date('Ymdh');
if(!is_dir($up_loadpath.$sub_dir)){
mkdir($up_loadpath.$sub_dir);
}
$prefix = 'bee_';
$name = uniqid($prefix,true).$ext;
if(move_uploaded_file($file['tmp_name'],$up_loadpath.$sub_dir.$name)){
echo '
上传成功';
return $name;
}else{
echo '
上传失败';
return false;
}
}
