PHP上传图片并生成缩略图_1

来源：互联网发布：真人录音配音软件编辑：程序博客网时间：2024/06/07 10:23

图片上传页面(upload.php):

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<head>

</head>

<body>

</form>

</center>

</body>

</html>

数据处理页面(result.php):

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<head>

</head>

<body>

<?php

$allow_type=array("jpg","png","gif");//允许上传的图片类型

$name=$_FILES['upImg']['name']; //客户端文件的原名称

$upload_dir="upload/";//图片保存目录

//strtolower 将字符串转为小写

$file_suffix=strtolower(getFileSuffix($name));

if(!in_array($file_suffix,$allow_type))

{

//implode 把数组元素组合为字符串

$all_type=implode("、",$allow_type);

exit("<script>alert('您只能上传 $all_type 格式的图片！');history.back();</script>");

}

//explode 把字符串分割为数组

$name_array=explode(".",$name);

do
{

$name_array[0]=randomFileName();

$name=implode(".",$name_array);

$upload_file=$upload_dir.$name;

}while(file_exists($upload_file));

$tmp_name=$_FILES['upImg']['tmp_name'];

//is_uploaded_file 判断文件是否是通过HTTP POST上传的

if(is_uploaded_file($tmp_name))

{

//限制上传文件的大小，此例只保存缩略图就不需要了

if($_FILES['upImg']['size'] > 204800)

{

exit("<script>alert('上传的图片请不要超过200KB！');history.back();</script>");

}

//move_uploaded_file 将上传文件移至指定目录

if(move_uploaded_file($tmp_name,$upload_file))

{

makeThumbnail($upload_file,$upload_file,120,120);

echo "<center><h2>图片已成功上传！</h2><img src='$upload_file'></center>";

}