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