php upload文件上传代码 jquery ajax无刷新

<?php /* ************************************************************************** [uploadx for php 通用上传类] ************************************************************************** 使用方法: HTML表单页 ------------------------------------------------------------------------- <form enctype="multipart/form-data" action="upload.php" method="post"> <input name="swfile" type="file"> <input type="submit" value="上传"> </form> ------------------------------------------------------------------------- upload.php处理页 ------------------------------------------------------------------------- <?php require_once './uploadx.php'; $upx = new uploadx(); $upx->uploadx_form = 'swfile'; //表单控件名称(表单上传控件的名称<input name="swfile" type="file" />) $upx->uploadx_save = "temp"; //保存文件目录(上传文件保存目录可以是相对路径也可以是绝对路径) $upx->uploadx_type = 'jpg|gif|png|swf'; //允许上传类型(根据后缀限制上传类型,每个后缀用“|”隔开) $upx->uploadx_size = "1024"; //允许上传大小(单位是KB。例:1024=1024KB) $upx->uploadx_name = time(); //上传后文件名(可自定义。例:date("Y-m-d",time())) if($upx->file()){ echo "上传成功<br />"; echo "名称->".$upx->file['name']."<br />"; echo "路径->".$upx->file['path']."<br />"; echo "大小->".$upx->file['size']."<br />"; echo "类型->".$upx->file['type']."<br />"; echo "时间->".$upx->file['time']."<br />"; echo "结果->".$upx->file['info']."<br />"; }else{ echo $upx->file['info']; } ?> ------------------------------------------------------------------------- */ class uploadx { public $uploadx_form; //表单控件名称 public $uploadx_save; //保存文件目录 public $uploadx_type; //允许上传类型 public $uploadx_size; //允许上传大小 public $uploadx_name; //上传后文件名 function __construct(){//初始化函数 $this->uploadx_form = 'attach'; $this->uploadx_save = 'temp'; $this->uploadx_type = 'jpg|gif|png|swf|flv|rar|7z|zip|doc|docx|ppt|pptx|xls|xlsx|txt|pdf|wav|mp3|wma|rm|rmvb|wmv'; $this->uploadx_size = '1024'; $this->uploadx_info = false; } function mkdirs($path , $mode = 0777){ $rootdir = ''; if(substr($path,0,1)=='/') $rootdir = $_SERVER['DOCUMENT_ROOT']; $path = $rootdir . $path; if(!is_dir($path)){ $this->mkdirs(dirname($path),$mode); mkdir($path,$mode); } return true; } function file(){ if(!isset($_FILES[$this->uploadx_form])){ $this->file = array('file'=>false,'info' => '上传错误!请检查表单上传控件名称['.$this->uploadx_form.']是否正确!'); return false; } switch($_FILES[$this->uploadx_form]['error']){ case 1: $this->file = array('file'=>false,'info' => '指定上传的文件大小超出服务器限制!'); return false; break; case 2: $this->file = array('file'=>false,'info' => '指定上传的文件大小超出表单限制!'); return false; break; case 3: $this->file = array('file'=>false,'info' => '只有部份文件被上传,文件不完整!'); return false; break; case 4: $this->file = array('file'=>false,'info' => '您没有选择上传任何文件!'); return false; } $postfix = pathinfo($_FILES[$this->uploadx_form]['name'], PATHINFO_EXTENSION); if(stripos($this->uploadx_type,$postfix)===false){ $this->file = array('file'=>false,'info' => '指定上传的文件类型超出限制,允许上传文件类型：'.$this->uploadx_type); return false; } if(round($_FILES[$this->uploadx_form]['size']/1024)>$this->uploadx_size){ $this->file = array('file'=>false,'info' => '指定上传的文件超出大小限制,文件上传限制范围：'.$this->uploadx_size.'kb'); return false; } if($this->mkdirs($this->uploadx_save)){ $this->uploadx_name = isset($this->uploadx_name) ? $this->uploadx_name.'.'.$postfix : $_FILES[$this->uploadx_form]['name']; if(!@move_uploaded_file($_FILES[$this->uploadx_form]['tmp_name'],$this->uploadx_save.'/'.$this->uploadx_name)){ $this->file = array('file'=>false,'info' => '上传文件保存过程中出现错误,请检查路径或目录权限.'); return false; } }else{ $this->file = array('file'=>false,'info' => '服务器目录不存在,自动创建目录失败,请检查是否有权限!'); return false; } @chmod($this->uploadx_save.'/'.$this->uploadx_name,0777); $this->file = array( 'file' => true, 'name' => $this->uploadx_name, 'path' => $this->uploadx_save.'/'.$this->uploadx_name, 'size' => $_FILES[$this->uploadx_form]['size'], 'type' => $postfix, 'time' => time(), 'info' => '上传成功!' ); return true; } }