php 文件下传 简单代码
php 文件上传 简单代码
1、程序文件
<?php //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 // by http://www.jbxue.com $upfile=$_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>"; } } ?>
如果想实现功能更强的上传程序,比如多文件、多图片上传的功能,可以参考下这篇文章:
http://www.jbxue.com/article/6378.html
2、上传页面
<!--设置提交文件的表单-->

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