PHP dofile.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($file_error){case 0:$data[‘status’] = 0;$data[‘msg’] = “文件上传成功!”;break;case 1:$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($file_allow_size).”!”;break;case 3:$data[‘status’] = 1;$data[‘msg’] = “上传失败，文件只有部份上传!”;break;case 4:$data[‘status’] = 1;$data[‘msg’] = “上传失败，文件没有被上传!”;break;case 5:$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($data));}}}}){$sizeStr=”;if($size<1024){return $size.”bytes”;}else if($size<(1024*1024)){$size=round($size/1024,1);return $size.”KB”;}else if($size<(1024*1024*1024)){$size=round($size/(1024*1024),1);return $size.”MB”;}else{$size=round($size/(1024*1024*1024),1);return $size.”GB”;} }?>
HTML如下
=>=>=========”text/javascript”>$(($(“input[type=file]”).val()==””){alert(“请选择要上传的文件”);return false;}})$(options = {type:”POST”,dataType:”json”,resetForm:true,success:(o.status==1){alert(o.msg);}else{$(“body”).append(“ <img src='”+o.url+”‘ alt=” /><input type=’hidden’ value='”+o.url+”‘ />”);}},error:function(o){alert(o.message);}}$(;});})</script>
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