html代码:
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< div id = "images" style = "width:250px;height:120px;background:#fff;border:1px solid #ccc;" >
< form enctype = "multipart/form-data" action = "./includer/importimg.inc.php?action=img" method = "post" name = "imge" >
< input type = "hidden" name = "MAX_FILE_SIZE" value = "100000000" />
< input value = "导入文件" type = "file" name = "img" id = "file" />< br />< br />
< input type = "submit" id = "imgbut" class = "buttons" value = "上传图片" />
</ form >
</ div >
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php代码:
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<?php
/**
*Mwbe Version1.0
*-----------------------------------------------
*Copy 2013-2014 ylt
*Web: communicate
*-----------------------------------------------
*Author: tao *Data: 2014-7-22
*/
header( "Content-Type:text/html;charset=utf-8" );
//step 1 使用$_FILES['pic']["error"] 检查错误
if (isset( $_GET [ "action" ])== "img" ){
if ( $_FILES [ "img" ][ "error" ] > 0){
switch ( $_FILES [ "img" ][ "error" ]) {
case 1:
echo "<script type='text/javascript'>alert('上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值<br>');history.back();</script>" ;
break ;
case 2:
echo "<script type='text/javascript'>alert('上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值');history.back();</script>" ;
break ;
case 3:
echo "<script type='text/javascript'>alert('文件只有部分被上传');history.back();</script>" ;
break ;
case 4:
echo "<script type='text/javascript'>alert('没有文件被上传');history.back();</script>" ;
break ;
default :
echo "<script type='text/javascript'>alert('末知错误');history.back();</script>" ;
}
exit ;
}
$maxsize =2000000; //50k
//step 2 使用$_FILES["pic"]["size"] 限制大小 单位字节 2M=2000000
if ( $_FILES [ "img" ][ "size" ] > $maxsize ) {
echo "<script type='text/javascript'>alert('上传的文件太大,不能超过{$maxsize}字节');history.back();</script>" ;
exit ;
}
//step 3 使用$_FILES["pic"]["type"]或是文件的扩展名 限制类型 MIME image/gif image/png gif png jpg
/* list($dl, $xl) = explode("/", $_FILES["pic"]["type"]);
if($dl!="image"){
echo "请上传一个图片,不充许其它类型文件";
exit;
}
*/
$allowtype = array ( "png" , "gif" , "jpg" , "jpeg" );
$arr = explode ( "." , $_FILES [ "img" ][ "name" ]);
$hz = $arr [ count ( $arr )-1];
if (!in_array( $hz , $allowtype )){
echo "<script type='text/javascript'>alert('这是不允许的类型');history.back();</script>" ;
exit ;
}
//step 4 将让传后的文件名改名
$filepath = "../imgweb/" ;
$fileimgweb = "imgweb/" ; //为了符合UBB的路径
$randname = date ( "Y" ). date ( "m" ). date ( "d" ). date ( "H" ). date ( "i" ). date ( "s" ).rand(100, 999). "." . $hz ;
//将临时位置的文件移动到指定的目录上即可
if ( is_uploaded_file ( $_FILES [ "img" ][ "tmp_name" ])){
if (move_uploaded_file( $_FILES [ "img" ][ "tmp_name" ], $filepath . $randname )){
echo "<script type='text/javascript'>history.back();</script>" ;
session_start();
$_SESSION [ 'images' ] = $fileimgweb . $randname ;
} else {
echo "<script type='text/javascript'>alert('上传失败');history.back();</script>" ;
}
} else {
echo "<script type='text/javascript'>alert('不是一个上传文件');history.back();</script>" ;
}
}
?>
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