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May 25, 2016 pm 05:14 PM

php file upload

php代码

<html>
<head>
<title>图片上传</title>
</head>
<body>
<form enctype="multipart/form-data" method="post" name="upform">
上传文件：<input type="file" name="upfile" value="">
<input type="submit" value="上传"><br>
<?php
//能够上传的类型
$uptypes=array(&#39;image/jpg&#39;,&#39;image/jpeg&#39;,&#39;image/png&#39;,&#39;image/pjpeg&#39;,&#39;image/gif&#39;,
&#39;image/bmp&#39;,&#39;image/x-png&#39;);
?>
允许上传的文件类型为：<?=implode(&#39;,&#39;,$uptypes)?>
</form>
</body>
</html>
<?php
$max_file_szie=2*pow(2,20);  //上传的文件小于2MB
$destination_folder=&#39;uploadimg/&#39;; //上传文件保存路径
if($_SERVER[&#39;REQUEST_METHOD&#39;]==&#39;POST&#39;){  
        if(!is_uploaded_file($_FILES[&#39;upfile&#39;][&#39;tmp_name&#39;])){
                echo &#39;图片不存在！&#39;;
                exit;
            }
        if($max_file_szie<$_FILES[&#39;upfile&#39;][&#39;size&#39;]){
                echo &#39;文件太大了！&#39;;
                exit;
            }
        if(!in_array($_FILES[&#39;upfile&#39;][&#39;type&#39;],$uptypes)){
                echo &#39;文件类型不符合！&#39;.$_FILES[&#39;upfile&#39;][&#39;type&#39;];
                exit;
            }
        if(!file_exists($destination_folder)){
                mkdir($destination_folder);
            }
        $filename=$_FILES[&#39;upfile&#39;][&#39;tmp_name&#39;];
        $image_size=getimagesize($filename);
        $pinfo=pathinfo($_FILES[&#39;upfile&#39;][&#39;name&#39;]); //文件路径信息
        $ftype=$pinfo[&#39;extension&#39;]; //旧文件后缀名
        $destination = $destination_folder.time().".".$ftype; //新文件名称
        if(file_exists($destination)&&$voerwrie !=true){
                echo &#39;同名文件已经存在了！&#39;;
                exit;
            }
        //把上传的文件从临时文件夹移动到指定目录
        if(!move_uploaded_file($filename,$destination)){ 
                echo &#39;移动文件出错了！&#39;;
                exit;
            }
        $pinfo=pathinfo($destination);
        $fname=$pinfo[basename];
        echo "<font color=&#39;red&#39;>已经成功上传</font><br>文件名：
              <font color=&#39;blue&#39;>".$destination_folder.$fname."</font><br>";
        echo &#39;宽度:&#39;.$image_size[0];
        echo &#39;高度:&#39;.$image_size[1];
        echo &#39;<br>大小:&#39;.$_FILES[&#39;upfile&#39;][&#39;size&#39;]."bytes";
    }
?>

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