//html代碼<form enctype="multipart/form-data" id="upForm"> <input type="file" name="file" ><br><br> <input type="button" value="提交"></form><div class="picDis"> <img src="" var formData = new FormData($('form')[0]); formData.append('file',$(':file')[0].files[0]); //坑點(diǎn): 無論怎么傳數(shù)據(jù),console.log(formData)都會顯示為空,但其實(shí)值是存在的,f12查看Net tab可以看到數(shù)據(jù)被上傳了 $.ajax({  url:'formtest.php',  type: 'POST',  data: formData,  //這兩個設(shè)置項必填  contentType: false,  processData: false,  success:function(data){  console.log(data)  var srcPath = data;  console.log();　　　　 //注意這里的路徑要根據(jù)自己的儲存文件的路徑設(shè)置  $('.picDis img').attr('src', '..'+srcPath);  } }) });

<?php $upFile = $_FILES['file'];/*** 創(chuàng)建文件夾函數(shù),用于創(chuàng)建保存文件的文件夾* @param str $dirPath 文件夾名稱* @return str $dirPath 文件夾名稱*/function creaDir($dirPath){ $curPath = dirname(__FILE__); $path = $curPath.'//'.$dirPath; if (is_dir($path) || mkdir($path,0777,true)) {  return $dirPath; }}//判斷文件是否為空或者出錯if ($upFile['error']==0 && !empty($upFile)) { $dirpath = creaDir('upload'); $filename = $_FILES['file']['name']; $queryPath = './'.$dirpath.'/'.$filename; //move_uploaded_file將瀏覽器緩存file轉(zhuǎn)移到服務(wù)器文件夾 if(move_uploaded_file($_FILES['file']['tmp_name'],$queryPath)){  echo $queryPath; }} ?>