<form action="3-upload.php" method="post" enctype="multipart/form-data">    <input type="hidden" name="MAX_FILE_SIZE" value="300000000000000" />    片名：<input type="text" name="name" /><p />    请上传大片：<input type="file" name="av" /><p />    <input type="submit" /></form>

<?php    /*echo "<pre>";    var_dump($_POST);    echo "</pre>";*/        //1.观察数组        /*echo "<pre>";    var_dump($_FILES);    echo "</pre>";*/        $file = $_FILES;        //2.判断是否是post上传    /*if(!is_uploaded_file($file[‘av‘][‘tmp_name‘])){            exit("文件非法上传！");            }*/        //3.判断文件上传是否发生了错误    if($file[‘av‘][‘error‘]>0){        switch($file[‘av‘][‘error‘]){                    case 1:                exit(‘超过php.ini当中的upload_max_filesize的值‘);            case 2:                exit(‘超过html表单设定的MAX_FILE_SIZE的值‘);            case 3:                exit(‘文件只有部分被上传‘);            case 4:                exit(‘文件没有被上传‘);            case 6:                exit(‘找不到临时文件夹‘);            case 7:                exit(‘写入失败！‘);            default:                exit(‘发生未知错误‘);                }    }        //4.判断文件mime类型    $mime = $file[‘av‘][‘type‘];    $mimes = array(‘image/bmp‘,‘image/gif‘,‘image/jpeg‘,‘image/png‘,‘image/x-icon‘);    if(!in_array($mime,$mimes)){            exit(‘文件mime类型不被允许‘);        }        //5.判断上传文件的扩展名    $name = $file[‘av‘][‘name‘];        //获取扩展名    //1.字符串翻转，找最后一个.，分割成数组，找数组的第一个元素，再翻转过来    //2.直接找最后一个.的位置，通过substr截取    //3.strrchr    //4.pathinfo(‘....‘,PATHINFO_EXTENSION)    $ext = pathinfo($name,PATHINFO_EXTENSION);        $exts = array(‘gif‘,‘png‘,‘jpeg‘,‘jpg‘,‘ico‘,‘bmp‘);        if(!in_array($ext,$exts)){            exit(‘文件扩展名不被允许‘);        }        //6.判断文件大小    if($file[‘av‘][‘size‘]>8){            exit(‘文件大小超出范围，请修改后上传‘);        }        //7.建立文件夹，生成新的文件名    $dir = "./uploads/".date("Y/m/d");//2013/08/08    if(!file_exists($dir)){        mkdir($dir,0755,true);//./uploads/2013/08/08    }        $new_name = md5(time().mt_rand()).".".$ext;        //8.移动缓存文件到指定目录    if(!move_uploaded_file($file[‘av‘][‘tmp_name‘],$dir."/".$new_name)){                exit("很遗憾！文件上传失败！");        }        //9.将以上有用数据保存到数组当中    $info = array(‘new_name‘=>$new_name,‘dir‘=>$dir,‘size‘=>$file[‘av‘][‘size‘],‘type‘=>$mime,‘ext‘=>$ext);        echo "亲！恭喜您！上传成功啦！";            

<?php        function upload(&$info,$up="./uploads",$name=‘av‘,$mimes=array(‘image/gif‘),$exts=array(‘gif‘),$size=3000000){            //1.观察数组        $file = $_FILES[$name];                //2.判断错误        if($file[‘error‘]>0){                    switch($file[‘error‘]){                        case 1:                    $info = ‘超过php.ini当中的upload_max_filesize的值‘;                    return false;                case 2:                    $info = ‘超过html表单设定的MAX_FILE_SIZE的值‘;                    return false;                case 3:                    $info = ‘文件只有部分被上传‘;                    return false;                case 4:                    $info = ‘文件没有被上传‘;                    return false;                case 6:                    $info = ‘找不到临时文件夹‘;                    return false;                case 7:                    $info = ‘写入失败！‘;                    return false;                default:                    $info = ‘发生未知错误‘;                    return false;                    }                    }            //3.判断是否是post上传        if(!is_uploaded_file($file[‘tmp_name‘])){            $info = "文件非法上传";            return false;        }            //4.判断mime类型        if(!in_array($file[‘type‘],$mimes)){            $info = "文件mime类型不被允许";            return false;        }            //5.判断后缀        $ext = pathinfo($file[‘name‘],PATHINFO_EXTENSION);        if(!in_array($ext,$exts)){            $info = "文件上传扩展名不被允许";            return false;        }            //6.判断大小        if($file[‘size‘]>$size){            $info = "上传大小超出指定范围";            return false;        }                //7.新建目录，新建文件名        $dir = rtrim($up,"/")."/".date("Y/m/d");        if(!file_exists($dir)){            mkdir($dir,0755,true);        }        $new_name = md5(time().mt_rand()).".".$ext;                //8.移动文件（核心代码）        if(move_uploaded_file($file[‘tmp_name‘],$dir."/".$new_name)){            $info = "亲！恭喜您！上传文件成功！";                        //9.返回上传文件的信息            return array(‘name‘=>$file[‘name‘],‘new_name‘=>$new_name,‘dir‘=>$dir,‘size‘=>$file[‘size‘],‘ext‘=>$ext);        }        }

<?php	include "./2-upload.func.php";		$info = "";		$arr = upload($info,‘./uploads‘,"av",array(‘image/jpeg‘),array(‘jpg‘));		echo $info;		var_dump($arr);

<form action="multiple_upload.php" method="post" enctype="multipart/form-data">	<input type="hidden" name="MAX_FILE_SIZE" value="http://www.mamicode.com/300000000000000" />	片名：<input type="text" name="name" /><p />		请上传大片：<input type="file" name="av[]" /><p />	请上传大片：<input type="file" name="av[]" /><p />	请上传大片：<input type="file" name="av[]" /><p />	请上传大片：<input type="file" name="av[]" /><p />	请上传大片：<input type="file" name="av[]" /><p />	请上传大片：<input type="file" name="av[]" /><p />		<!--请上传大片：<input type="file" name="av1" /><p />	请上传大片：<input type="file" name="av2" /><p />	请上传大片：<input type="file" name="av3" /><p />	请上传大片：<input type="file" name="av4" /><p />	请上传大片：<input type="file" name="av5" /><p />	请上传大片：<input type="file" name="av6" /><p />-->		<input type="submit" /></form>

<?php	echo "<pre>";		var_dump($_FILES);		echo "</pre>";		//include "2-upload.func.php";		/*foreach($_FILES as $key=>$val){//遍历大数组$_FILES将里面的所有的input type=file的内容处理一遍，这个只能处理av1,av2,av3,av4...这种类型的表单			upload($info,"./mul_uploads",$key,array("image/jpeg","image/gif","image/png"),array(‘gif‘,‘jpg‘,‘png‘));		echo $info."<br />";//循环调用函数		}*/		foreach($_FILES[‘av‘] as $key=>$val){//可以处理av[]这种格式的表单数据，每次大循环将name,type,tmp_name,error,size分别遍历出来			foreach($val as $k=>$v){//将对应的name/type/tmp_name/error/size的所有的内容全部遍历出来存入新数组					$arr["av"][$k][$key] = $v;//$arr[‘av‘][0][‘name‘]			//组装对应键的数组，每次小循环将对应的键name/type...的每个上传文件的内容对应存下来				}		}		/*$key = "name";	$val = array();	$k = 0;	$v = ‘dasdasdasdas.jpg‘;	$arr["av"][0]["name"]=‘dasdasdasdas.jpg‘;	$k = 1;	$v = "dasdasdasdasd.jpg";	$arr[‘av‘][1]["name"] = "";*/			echo "<pre>";	var_dump($arr);	echo "</pre>";		/*array(1) {  ["av"]=>  array(5) {    [0]=>    array(6) {      [‘name‘]=>      string(44) "8b13632762d0f703bdd1a0f309fa513d2697c5b9.jpg"      [‘type‘]=>      string(36) "51ccc01fjw1e6j1od94b8j208206o74u.jpg"      [‘tmp_name‘]=>      string(26) "2457331_131727867162_2.jpg"      [‘error‘]=>      string(44) "d52a2834349b033b40abf06214ce36d3d539bd62.jpg"      [‘size‘]=>      string(16) "Img259247193.jpg"    }    [1]=>    array(6) {      [‘name‘]=>      string(44) "8b13632762d0f703bdd1a0f309fa513d2697c5b9.jpg"      [‘type‘]=>      string(36) "51ccc01fjw1e6j1od94b8j208206o74u.jpg"      [‘tmp_name‘]=>      string(26) "2457331_131727867162_2.jpg"      [‘error‘]=>      string(44) "d52a2834349b033b40abf06214ce36d3d539bd62.jpg"      [‘size‘]=>      string(16) "Img259247193.jpg"    }    [2]=>    array(6) {      [‘name‘]=>      string(44) "8b13632762d0f703bdd1a0f309fa513d2697c5b9.jpg"      [‘type‘]=>      string(36) "51ccc01fjw1e6j1od94b8j208206o74u.jpg"      [‘tmp_name‘]=>      string(26) "2457331_131727867162_2.jpg"      [‘error‘]=>      string(44) "d52a2834349b033b40abf06214ce36d3d539bd62.jpg"      [‘size‘]=>      string(16) "Img259247193.jpg"    }    [3]=>    array(6) {      [‘name‘]=>      string(44) "8b13632762d0f703bdd1a0f309fa513d2697c5b9.jpg"      [‘type‘]=>      string(36) "51ccc01fjw1e6j1od94b8j208206o74u.jpg"      [‘tmp_name‘]=>      string(26) "2457331_131727867162_2.jpg"      [‘error‘]=>      string(44) "d52a2834349b033b40abf06214ce36d3d539bd62.jpg"      [‘size‘]=>      string(16) "Img259247193.jpg"    }    [4]=>    array(6) {      [‘name‘]=>      string(44) "8b13632762d0f703bdd1a0f309fa513d2697c5b9.jpg"      [‘type‘]=>      string(36) "51ccc01fjw1e6j1od94b8j208206o74u.jpg"      [‘tmp_name‘]=>      string(26) "2457331_131727867162_2.jpg"      [‘error‘]=>      string(44) "d52a2834349b033b40abf06214ce36d3d539bd62.jpg"      [‘size‘]=>      string(16) "Img259247193.jpg"    }  }}		*/

<?php	//1.告诉浏览器文件的类型	//echo $mime = mime_content_type("./mm.jpg");	header("Content-type:image/jpeg");		//2.告诉浏览器文件的大小	header("Content-Length:".filesize("./mm.jpg"));		//3.告诉浏览器以附件的形式打开文件	//header("Content-Disposition:attachment");	header("Content-Disposition:attachment;filename=mm.jpg");		//4.打开文件	readfile("./mm.jpg");function getfile($dir){		if(!is_dir($dir)){			return false;		}		$d = opendir($dir);		while(false!==($f=readdir($d))){			if($f=="."||$f==".."){				continue;			}			$file = rtrim($dir,"/")."/".$f;			if(is_file($file)){				echo $f."---".filetype($file)."<br />";			}			if(is_dir($file)){				getfile($file);			}		}	}	getfile("./uploads");