PHP AjaxForm提交图片上传并显示图片源码
本文实例为大家分享了PHPAjaxForm提交图片上传并显示图片的具体代码，供大家参考，具体内容如下
PHPdofile.php文件上传源码
<?php
$file_upload="upload/";
$file_allow_ext='gif|jpg|jpeg|png|gif|zip|rar|ppt|xls|pdf|pptx|xlsx|docx';
$file_allow_size=5*1024*1024;
if($_POST['submit']=="上传"){
if(is_uploaded_file($_FILES['file']['tmp_name'])){
$file_name=$_FILES['file']['name'];
$file_error=$_FILES['file']['error'];
$file_type=$_FILES['file']['type'];
$file_tmp_name=$_FILES['file']['tmp_name'];
$file_size=$_FILES['file']['size'];
$file_ext=substr($file_name,strrpos($file_name,'.')+1);
switch($file_error){
case0:
$data['status']=0;
$data['msg']="文件上传成功!";
break;
case1:
$data['status']=1;
$data['msg']="文件上传失败，文件大小".$file_size."超过限制,允许上传大小".sizeFormat($file_allow_size)."!";
break;
case3:
$data['status']=1;
$data['msg']="上传失败，文件只有部份上传!";
break;
case4:
$data['status']=1;
$data['msg']="上传失败，文件没有被上传!";
break;
case5:
$data['status']=1;
$data['msg']="文件上传失败，文件大小为0!";
break;
}
if(stripos($file_allow_ext,$file_ext)===false){
$data['status']=1;
$data['msg']="该文件扩展名不允许上传";
}
if($file_size>$file_allow_size){
$data['status']=1;
$data['msg']="文件大小超过限制,只能上传".sizeFormat($file_allow_size)."的文件!";
}
if($data['status']==1){
$data['status']=1;
$data['msg']=$data['msg'];
exit(json_encode($data));
}
if($data['status']==0){
if(file_exists($file_upload)){
$file_new_name=date("YmdHis").'_'.rand(10000,99999).'.'.$file_ext;
$file_save_path=$file_upload.$file_new_name;
$data['status']=0;
$data['url']=$file_save_path;
move_uploaded_file($file_tmp_name,$file_save_path);
exit(json_encode($data));
}else{
exit(json_encode($data));
}
}
}
}
functionsizeFormat($size)
{
$sizeStr='';
if($size<1024)
{
return$size."bytes";
}
elseif($size<(1024*1024))
{
$size=round($size/1024,1);
return$size."KB";
}
elseif($size<(1024*1024*1024))
{
$size=round($size/(1024*1024),1);
return$size."MB";
}
else
{
$size=round($size/(1024*1024*1024),1);
return$size."GB";
}
}
?>
HTML如下
<scripttype="text/javascript"src="http://lib.sinaapp.com/js/jquery/1.9.1/jquery-1.9.1.min.js"></script>
<scripttype="text/javascript"src="http://files.cnblogs.com/files/china-li/jquery.form.js"></script>
<formaction="dofile.php"method="post"enctype="multipart/form-data"id="upfileimage">
<inputtype="hidden"name="image[]"/>
<labelfor="file">文件:</label><inputtype="file"name="file"id="file"/>
<inputtype="submit"name="submit"value="上传"/>
</form>
<scripttype="text/javascript">
$("#upfileimage").submit(function(){
if($("input[type=file]").val()==""){
alert("请选择要上传的文件");
returnfalse;
}
})
$(function(){
varoptions={
type:"POST",
dataType:"json",
resetForm:true,
success:function(o){
if(o.status==1){
alert(o.msg);
}else{
$("body").append(" <imgsrc='"+o.url+"'alt=''width='100'/><inputtype='hidden'name='image[]'value='"+o.url+"'/>");
}
},
error:function(o){
alert(o.message);
}
}
$("#upfileimage").ajaxForm(options).submit(function(){returnfalse;});
})
</script>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。