Fileupload功能

Question

你好我试图用php创建一个文件Uploader，所以我复制了它  这工作但后来我不想把它放在这样的函数中：

function upload($file) {
    $target_dir = "www/";
        $target_file = $target_dir . date("Y-m-d") . "_" . basename($file["name"]);
        $uploadOk = 1;
        $imageFileType = pathinfo($target_file, PATHINFO_EXTENSION);

        $check = getimagesize($file["tmp_name"]);
        if ($check !== false) {
            echo "File is an image - " . $check["mime"] . ".";
            $uploadOk = 1;
        } else {
            echo "File is not an image.";
            $uploadOk = 0;
        }

    // Check if file already exists
        if (file_exists($target_file)) {
            echo "Sorry, file $target_file already exists.";
            $uploadOk = 0;
        }
    // Check file size
        if ($file["size"] > 500000) {
            echo "Sorry, your file is too large.";
            $uploadOk = 0;
        }
    // Allow certain file formats
        if ($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg" && $imageFileType != "gif") {
            echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
            $uploadOk = 0;
        }
    // Check if $uploadOk is set to 0 by an error
        if ($uploadOk == 0) {
            echo "Sorry, your file was not uploaded.";
    // if everything is ok, try to upload file
        } else {
            if (move_uploaded_file($file["tmp_name"], $target_file)) {
                echo "The file " . basename($file["name"]) . " has been uploaded.";
            } else {
                echo "Sorry, there was an error uploading your file.";
            }
        }
        return $target_file;
    }

所以我可以这样称呼它：

 include 'upload.php';



    if(isset($_POST["send2"])) {
        $p1="";
        $p2="";
        $p3="";
        $p4="";
        $p5="";

     if(isset($_FILES["p1"])){
       $p1=  upload($_FILES["p1"]);
     }
       if(isset($_FILES["p2"])){
       $p2=  upload($_FILES["p2"]);
     }
      if(isset($_FILES["p3"])){
         $p3=upload($_FILES["p3"]);
     }
      if(isset($_FILES["p4"])){
      $p4 =  upload($_FILES["p4"]);
     }
      if(isset($_FILES["p5"])){
      $p5=   upload($_FILES["p5"]);
     }

      $pcrud->create($_POST['titel'], $_POST['input'], "" . getdate() . "", $target_file, $_POST['p2'], $_POST['p3'], $_POST['p4'], $_POST['p5'], $_SESSION['user'], $ccrud->getidbytitle($_POST['cat']));   
    }

但是这个消息没有工作＆＃34;文件名不能为空＆＃34;来了。我怎样才能解决这个问题呢？

Answer 1

我发现问题我无法检查文件是否已设置，我必须检查名称是否具有这样的值：

这就是我调用函数的方式：

if(isset($_POST["send2"])) {
    $p1="";
       $p2="";
          $p3="";
             $p4="";
                $p5="";

 if($_FILES["p1"]["name"]!=""){
   $p1=  upload($_FILES["p1"]["name"],$_FILES["p1"]["tmp_name"],$_FILES["p1"]["size"]);
 }
   if($_FILES["p2"]["name"]!=""){
   $p2=  upload($_FILES["p2"]["name"],$_FILES["p2"]["tmp_name"],$_FILES["p2"]["size"]);
 }
  if($_FILES["p3"]["name"]!=""){
     $p3=upload($_FILES["p3"]["name"],$_FILES["p3"]["tmp_name"],$_FILES["p3"]["size"]);
 }
  if($_FILES["p4"]["name"]!=""){
  $p4 =  upload($_FILES["p4"]["name"],$_FILES["p4"]["tmp_name"],$_FILES["p4"]["size"]);
 }
  if($_FILES["p5"]["name"]!=""){
  $p5=   upload($_FILES["p5"]["name"],$_FILES["p5"]["tmp_name"],$_FILES["p5"]["size"]);
 }

  $pcrud->create($_POST['titel'], $_POST['input'], "" . getdate() . "", $p1, $p2, $p3, $p4, $p5, $_SESSION['user'], $ccrud->getidbytitle($_POST['cat']));   
}

这就是功能：

 function upload($filename,$filetmpname,$size) {
        $target_dir = "www/";
        $target_file = $target_dir . date("Y-m-d") . "_" . basename($filename);
        $uploadOk = 1;
        $imageFileType = pathinfo($target_file, PATHINFO_EXTENSION);

        $check = getimagesize($filetmpname);
        if ($check !== false) {
            echo "File is an image - " . $check["mime"] . ".";
            $uploadOk = 1;
        } else {
            echo "File is not an image.";
            $uploadOk = 0;
        }

    // Check if file already exists
        if (file_exists($target_file)) {
            echo "Sorry, file $target_file already exists.";
            $uploadOk = 0;
        }
    // Check file size
        if ($size > 500000) {
            echo "Sorry, your file is too large.";
            $uploadOk = 0;
        }
    // Allow certain file formats
        if ($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg" && $imageFileType != "gif") {
            echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
            $uploadOk = 0;
        }
    // Check if $uploadOk is set to 0 by an error
        if ($uploadOk == 0) {
            echo "Sorry, your file was not uploaded.";
    // if everything is ok, try to upload file
        } else {
            if (move_uploaded_file($filetmpname, $target_file)) {
                echo "The file " . basename($filename) . " has been uploaded.";
            } else {
                echo "Sorry, there was an error uploading your file.";
            }
        }
        return $target_file;
    }