复制代码 代码如下:

<script>
window.onload=function(){
upfile(\'file.php\');
}


/*
** url 路径
**/
function upfile(url){
//创建iframe
var iframe = document.createElement(\"iframe\");
document.body.appendChild(iframe);
iframe.id = \'iframeName\';
iframe.name = \'iframeName\';
iframe.style.display = \'none\';
//创建form
var turnForm = document.createElement(\"form\");
document.body.appendChild(turnForm);
turnForm.method = \'post\';
turnForm.action = url;
turnForm.encoding = \"multipart/form-data\";
turnForm.name = \'formNamer\';
turnForm.target = \'iframeName\';
//创建隐藏表单
var newElement = document.createElement(\"input\");
newElement.setAttribute(\"name\",\"inputname\");
newElement.setAttribute(\"type\",\"file\");
newElement.setAttribute(\"value\",\'\');
turnForm.appendChild(newElement);
}

//form提交
function formSubmit() {
//var res = document.formNamer.inputname.value;
document.formNamer.submit();
}

//返回值
function callback(result){
//window.parent.document.getElementById(\'iframeName\').style.display = \'block\'; 通过iframe 查看后台数据
if(result[\'error\'] == 0){
document.getElementById(\'test\').src= result[\'img\'][1]+\'/\'+result[\'img\'][2];
}else if(result[\'error\'] == 1){
alert(result[\'meg\']);
}else if(result[\'error\'] == 2){
alert(result[\'meg\']);
}else if(result[\'error\'] == 3){
alert(result[\'meg\']);
}else if(result[\'error\'] == 4){
alert(result[\'meg\']);
}else{
alert(result[\'meg\']);
}

}

</script>

<a href=\"javascript:formSubmit()\">上传</a>
<img src=\"http://blog.163.com/zhwxl_zyx/blog/img/pasic.jpg\" id=\"test\" width=\"200\" height=\"200\">

复制代码 代码如下:

<?php
header(\"content-Type: text/html; charset=Utf-8\");

if(@is_uploaded_file($_FILES[\'inputname\'][\'tmp_name\'])){

$f = $_FILES[\'inputname\'];
$name = $f[\"name\"];
$size = $f[\"size\"];
$type = $f[\"type\"];
$fileName = $f[\"tmp_name\"];

switch ($type) {
case \'image/jpg\':$okType = true;
break;

case \'image/jpeg\':$okType = true;
break;

case \'image/png\':$okType = true;
break;

case \'image/gif\':$okType = true;
break;
}

if($okType){
$error = $f[\"error\"];
echo \'文件名称:\'.$name.\'<br>\';
echo \'文件类型:\'.$type.\'<br>\';
echo \'文件大小:\'.round($size/1024).\'K<br>\';
echo \'文件临时存放路径:\'.$fileName.\'<br>\';

$fileDir = dirname(__FILE__).\'/img/upfile\'.time().$name;
$img = explode(\'/\',$fileDir);

move_uploaded_file($fileName, $fileDir);

$data = array();
$data[\'img\'] = $img;
$data[\'name\'] = $name;
$data[\'type\'] = $type;
$data[\'size\'] = $size;
$data[\'filename\'] = $fileName;
$data[\'fileDir\'] = $fileDir;

if($error==0){
/*echo \'上传成功!\';
echo \'预览:\';
echo \"<img src=\"http://blog.163.com/zhwxl_zyx/blog/.$img[1].\'/\'.$img[2].\" width=\'200\' height=\'200\'><br>\";
echo \'文件名称\'.$img[2];*/
$data[\'error\'] = 0;
exit(\"<script>parent.callback(\".json_encode($data).\");</script>\");

}elseif($error==1){
$data[\'error\'] = 1;
$data[\'meg\'] = \'超过了文件大小，在php.ini文件中设置\';
exit(\"<script>parent.callback(\".json_encode($data).\");</script>\");
}elseif ($error==2){
$data[\'error\'] = 2;
$data[\'meg\'] = \'超过了文件的大小MAX_FILE_SIZE选项指定的值\';
exit(\"<script>parent.callback(\".json_encode($data).\");</script>\");
}elseif ($error==3){
$data[\'error\'] = 3;
$data[\'meg\'] = \'文件只有部分被上传\';
exit(\"<script>parent.callback(\".json_encode($data).\");</script>\");
}elseif ($error==4){
$data[\'error\'] = 4;
$data[\'meg\'] = \'没有文件被上传\';
exit(\"<script>parent.callback(\".json_encode($data).\");</script>\");
}else{
$data[\'meg\'] = \'上传文件大小为0\';
exit(\"<script>parent.callback(\".json_encode($data).\");</script>\");
}

}
}else{
$data[\'error\'] = 4;
$data[\'meg\'] = \'没有文件被上传\';
exit(\"<script>parent.callback(\".json_encode($data).\");</script>\");
}
?>