erlchina 发表于 2017-12-29 22:40:51

h5+php实现图片上传

  html:
  

<formenctype="multipart/form-data" method="post">  <input type="file" runat="server" />
  <input type="button" value="确定" />
  <div>
  </div>
  </form>
  

<script type="text/javascript">  function uploadImage() {
  //判断是否有选择上传文件
  var imgPath = $("#uploadFile").val();
  if (imgPath == "") {
  alert("请选择上传图片!");
  return;
  }
  //判断上传文件的后缀名
  var strExtension = imgPath.substr(imgPath.lastIndexOf('.') + 1);
  if (strExtension != 'jpg' && strExtension != 'gif'
  && strExtension != 'png' && strExtension != 'bmp') {
  alert("请选择图片文件");
  return;
  };
  var formdata = new FormData();
  var fileObj = $("#uploadFile").get(0).files;
  formdata.append("file", fileObj);
  formdata.append("aid", 30);
  formdata.append("nickname", "你好");
  $.ajax({
  type: "POST",
  url: 'test.php',
  data: formdata,
  processData: false,
  contentType: false,
  cache: false,
  success: function(data) {
  //alert("上传成功");
  $("#imgDiv").empty();
  $("#imgDiv").html(data);
  $("#imgDiv").show();
  },
  error: function(XMLHttpRequest, textStatus, errorThrown) {
  //alert("上传失败,请检查网络后重试");
  console.log(XMLHttpRequest);
  console.log(textStatus);
  console.log(errorThrown);
  }
  });
  }
  </script>
  test.php:
  

  <?php
  //如果接收的数据包含图片文件
  if(isset($_FILES['file'])){
     $aid = intval($_POST['aid']);
  $nickname = ($_POST['nickname']);
  //获取图片的临时路径
  $image = $_FILES["file"]['tmp_name'];
  //只读方式打开图片文件
  $fp = fopen($image, "r");
  //读取文件(可安全用于二进制文件)
  $file = fread($fp, $_FILES["file"]["size"]); //二进制数据流
  //保存地址
  $imgDir = 'account_imgs/';
  //要生成的图片名字
  //$filename = date("Ym")."/".md5(time().mt_rand(10, 99)).".jpg"; //新图片名称
  $filename = "2017new.jpg";
  //新图片的路径
  $newFilePath = $imgDir.$filename;
  $data = $file;
  $newFile = fopen($newFilePath,"w"); //打开文件准备写入
  fwrite($newFile,$data); //写入二进制流到文件
  fclose($newFile); //关闭文件
  //写入数据库
  $sql = "update account set nickname = '".$nickname."', img = '".$filename."' where aid = ".$aid;
  if(!$db->query($sql)) {
  Json_out(array('result'=>'imgfail'));
  exit;
  }else{
  Json_out(array('result'=>'imgsuccess'));
  exit;
  }
  } else{
  $aid = intval($_REQUEST['aid']);
  $nickname = $_REQUEST['nickname'];
  $sql = "update `account` set nickname = '".$nickname."' where aid = ".$aid;
  if(!$db->query($sql)) {
  Json_out(array('result'=>'fail'));
  exit;
  }else{
  Json_out(array('result'=>'noimgsuccess'));
  exit;
  }
  }
  ?>
  
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