文件上传功能

Question

你好，我试图与PHP文件上传，所以我拷入它 这个工作，但后来我wan't把这个在这样的函数：

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：

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'])); 
    } 

但这不起作用的消息“文件名不能为空”来了。我该如何解决这个问题有什么问题？

Answer 1

，我发现我不能，如果文件isset检查问题，我必须检查品牌的价值是这样的：

这是我如何调用该函数：

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; 
    }