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    <form action="<?php $_SERVER['PHP_SELF']; ?>" enctype="multipart/form-data" method="post" ><input type="text" name="name" /><input type="file" name="file" /><input type="submit" name='submit' value="Ìa½»" ></form>
    <?php
    /**
    * Created by PhpStorm.
    * User: Administrator
    * Date: 2016/6/28
    * Time: 21:04
    */
    class upload{
    protected $fileMine;//ÎļþÉÏ´«ÀaÐÍ
    protected $filepath;//ÎļþÉÏ´«Â*¾¶
    protected $filemax;//ÎļþÉÏ´«´oС
    protected $fileExt;//ÎļþÉÏ´«¸ñʽ
    protected $filename;//ÎļþÃu
    protected $fileerror;//Îļþ³o´iÉeÖÃ
    protected $fileflag;//Îļþ¼i²a
    protected $fileinfo; //FILES
    protected $ext; //ÎļþÀ(C)Õ¹
    protected $path;
    //ÎļþÉÏ´«
    public function __construct($filename="file",$filemax=20000000,$filepath="./Uploads",$fileflag=true,$fileExt=array('jpg','exe'),$fileMine=array('image/jpeg'))
    {
    $this->filename=$filename;
    $this->fileinfo=$_FILES[$this->filename];
    $this->filemax=$filemax;
    $this->filepath=$filepath;
    $this->fileflag=$fileflag;
    $this->fileExt=$fileExt;
    $this->fileMine=$fileMine;
    //var_dump($this->filename);
    }
    //´iÎoÅжÏ
    public function UpError(){
    if($this->fileinfo['error']>0){
    switch($this->fileinfo['error'])
    {
    case 1:
    $this->fileerror="ÉÏ´«Îļþ´oС³¬¹ý*þÎñÆ÷ÔÊÐiÉÏ´«µÄ×i´oÖµ£¬php.iniÖÐÉeÖÃupload_max_filesizeÑ¡ÏiÏÞÖƵÄÖµ ";
    break;
    case 2:
    $this->fileerror="ÉÏ´«Îļþ´oС³¬¹ýHTML±iµ¥ÖÐÒþ²ØÓoMAX_FILE_SIZEÑ¡ÏiÖ¸¶¨µÄÖµ";
    break;
    case 3:
    $this->fileerror="Îļþ²¿*Ö±»ÉÏ´«";
    break;
    case 4:
    $this->fileerror="ûÓÐÑ¡ÔñÉÏ´«Îļþ";
    break;
    case 5:
    $this->fileerror="δÕÒµ½ÁÙʱĿ¼";
    break;
    case 6:
    $this->fileerror="ÎļþдÈeʧ°Ü";
    break;
    case 7:
    $this->fileerror="phpÎļþÉÏ´«À(C)չûÓдo¿ª ";
    break;
    case 8:
    $this->fileerror="";
    break;
    }
    return false;
    }
    return true;
    }
    //¼i²aÎļþÀaÐÍ
    public function UpMine(){
    if(!in_array($this->fileinfo['type'],$this->fileMine)) {
    $this->error="ÎļþÉÏ´«ÀaÐͲ»¶Ô";
    return false;
    }
    return true;
    }
    //¼i²aÎļþ¸ñʽ
    public function UpExt(){
    $this->ext=pathinfo($this->fileinfo['name'],PATHINFO_EXTENSION);
    //var_dump($ext);
    if(!in_array($this->ext,$this->fileExt)){
    $this->fileerror="Îļþ¸ñʽ²»¶Ô";
    return false;
    }
    return true;
    }
    //¼i²aÎļþÂ*¾¶
    public function UpPath(){
    if(!file_exists($this->filepath)){
    mkdir($this->filepath,0777,true);
    }
    }
    //¼i²aÎļþ´oС
    public function UpSize(){
    $max=$this->fileinfo['size'];
    if($max>$this->filemax){
    $this->fileerror="Îļþ¹ý´o";
    return false;
    }
    return true;
    }
    //¼i²aÎļþÊÇ*ñHTTP
    public function UpPost(){
    if(!is_uploaded_file($this->fileinfo['tmp_name'])){
    $this->fileerror="¶ñÒaÉϳ¥»¹";
    return false;
    }
    return true;
    }
    //ÎļþÃu*ÀÖ¹Öظ´
    public function Upname(){
    return md5(uniqid(microtime(true),true));
    }
    //ͼƬËoÂÔͼ
    public function Smallimg($x=100,$y=100){
    $imgAtt=getimagesize($this->path);
    //ͼÏñ¿i£¬¸ß£¬ÀaÐÍ
    $imgWidth=$imgAtt[0];
    $imgHeight=$imgAtt[1];
    $imgext=$imgAtt[2];
    //µÈ±ÈÁÐËo*Å
    if(($x/$imgWidth)>($y/$imgHeight)){
    $bl=$y/$imgHeight;
    }else{
    $bl=$x/$imgWidth;
    }
    $x=floor($imgWidth*$bl); //Ëo*źo
    $y=floor($imgHeight*$bl);
    $images=imagecreatetruecolor($x,$y);
    $big=imagecreatefromjpeg($this->path);
    imagecopyresized($images,$big,0,0,0,0,$x,$y,$imgWidth,$imgWidth);
    switch($imgext){
    case 1:
    $imageout=imagecreatefromgif($this->path);
    break;
    case 2:
    $imageout=imagecreatefromjpeg($this->path);
    break;
    case 3:
    $imageout=imagecreatefromgif($this->path);
    break;
    }
    $im=imagejpeg($images,$this->path);
    }
    //ÎļþË«´«
    public function uploads()
    {
    if($this->UpError()&&$this->UpMine()&&$this->UpExt()&&$this->UpSize()&&$this->UpPost()){
    $this->UpPath();
    $names=$this->Upname();
    $this->path=$this->filepath.'/'. $names.'.'.$this->ext;
    if(move_uploaded_file($this->fileinfo['tmp_name'], $this->path)){
    return $this->path;
    }else{
    $this->fileerror="ÉÏ´«Ê§°Ü";
    }
    }else{
    exit("<b>".$this->fileerror."</b>");
    }
    }
    }
    <?php
    header("content-type:imagejpeg");
    header("Content-type:text/html;charset=utf-8");
    require 'list.php';
    $u=new upload();
    $a=$u->uploads();
    $c=$u->Smallimg();
    echo "<img src={$a} />";
    echo "<img src={$c} />";
    ?>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <title>Examples</title>
    <meta name="description" content="">
    <meta name="keywords" content="">
    <link href="" rel="stylesheet">
    </head>
    <body>
    <form action="ce.php" enctype="multipart/form-data" method="post" >
    <input type="text" name="name" /><input type="file" name="file" />
    <input type="submit" name='submit' value="Ìa½»" >
    </form>
    </body>
    </html>

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