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PHP source code to implement file upload

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2016-08-08 09:33:221757browse

PHP source code to implement file upload

<?php
        ##author :Androidyue
        ##sina @androidyue
        ##Blog http://blog.csdn.net/BossDarcy
        ##源码具体讲解  http://blog.csdn.net/BossDarcy/archive/2010/12/20/6086082.aspx
        //判断临时文件存放路径是否包含用户上传的文件
        if(is_uploaded_file($_FILES["uploadfile"]["tmp_name"])){
        //为了更高效,将信息存放在变量中
        $upfile=$_FILES["uploadfile"];//用一个数组类型的字符串存放上传文件的信息
        //print_r($upfile);//如果打印则输出类似这样的信息Array ( [name] => m.jpg [type] => image/jpeg [tmp_name] => C:\WINDOWS\Temp\php1A.tmp [error] => 0 [size] => 44905 )
        $name=$upfile["name"];//便于以后转移文件时命名
        $type=$upfile["type"];//上传文件的类型
        $size=$upfile["size"];//上传文件的大小
        $tmp_name=$upfile["tmp_name"];//用户上传文件的临时名称
        $error=$upfile["error"];//上传过程中的错误信息
        //echo $name;
        //对文件类型进行判断,判断是否要转移文件,如果符合要求则设置$ok=1即可以转移
        switch($type){
            case "image/jpg": $ok=1;
            break;
            case "image/jpeg": $ok=1;
            break;
            case "image/gif" : $ok=1;
            break;
            default:$ok=0;
            break;
        }
        //如果文件符合要求并且上传过程中没有错误
        if($ok&&$error=='0'){
            //调用move_uploaded_file()函数,进行文件转移
            move_uploaded_file($tmp_name,'up/'.$name);
            //操作成功后,提示成功
            echo "<script language=\"javascript\">alert('succeed')</script>";
        }else{
            //如果文件不符合类型或者上传过程中有错误,提示失败
            echo "<script language=\"javascript\">alert('failed')</script>";
        }
    }
?>
<!--设置提交文件的表单-->
<form enctype="multipart/form-data" method="post" name="uploadform">
<input type="file" name="uploadfile" value="Upload File">
<input type="submit" name="submit" value="Upload">
</form>


The above introduces the source code of PHP to implement file upload, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.

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