PHP映像未上傳到網站

Question

在我的網站上，我有2個單獨的位置供用戶上傳圖像。 第一個完美。 第二個沒有。 據我所知，它們是完全相同的。 為了進行測試，我在兩個圖像上使用了相同的圖像，並且在第一個圖像上起作用，但第二個圖像卻沒有。 這是不工作的代碼：

<?php
include('cn.php');

$name = $_FILES['image']['name'];
$type = $_FILES['image']['type'];
$size = $_FILES['image']['size'];
$temp = $_FILES['image']['tmp_name'];
$error = $_FILES['image']['error'];

echo $name; //Doesnt echo anything

$rand_num = rand(1, 1000000000);

$name = $rand_num . "_" . $name;

echo $name; //Echos just the random number followed by _

if ($error > 0) { 
    die("Error uploading file! Go back to the <a href='gallery.php'>gallery</a> page and try again.");
} else {
    $sql = "INSERT INTO gallery (image) VALUES ('".$name."')"; //Inserts the random number to the database
    $query = mysql_query($sql) or die(mysql_error());
    echo $sql; 

    move_uploaded_file($temp, "gallery_pics/$name"); //Doesn't move the file.  gallery_pics exists, if that matters
    echo "Upload complete! Go back to the <a href='gallery.php'>album</a>.";
}

?>

如果有人可以在這里幫助我。 我確信這很簡單，但是我還沒有找到任何幫助的方法。 謝謝！

編輯：代碼上方有兩行無法正確顯示。 一個啟動PHP，另一個打開數據庫。

Answer 1

兩種腳本都位於同一目錄中嗎？ 如果沒有，請確保指定正確的相對路徑或完整路徑，並在其前面加上如下斜杠：

move_uploaded_file($temp, "/some_folder/gallery_pics/$name");

另外，您是否檢查上傳文件的擴展名？ 如果沒有，則用戶可以上傳並執行一個PHP文件。 順便說一下，您的文件名看起來會更好：

$rand_num = rand(1111111111, 9999999999);

Answer 2

開發或嘗試查找故障時啟用錯誤報告，還要檢查服務器錯誤日志。 檢查$_FILES['image']['error']錯誤代碼，並相應顯示錯誤。 閱讀下面的代碼。 希望能幫助到你

<?php
//Enable error reporting
error_reporting(E_ALL);
ini_set('display_errors',1);

$error_types = array(
    0=>"There is no error, the file uploaded with success",
    1=>"The uploaded file exceeds the upload_max_filesize directive in php.ini",
    2=>"The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form",
    3=>"The uploaded file was only partially uploaded",
    4=>"No file was uploaded",
    6=>"Missing a temporary folder"
);

if($_FILES['image']['error']==0) {
    // process
    $name = $_FILES['image']['name'];
    $type = $_FILES['image']['type'];
    $size = $_FILES['image']['size'];
    $temp = $_FILES['image']['tmp_name'];

    //mt_rand() = 0-RAND_MAX and make filename safe.
    $name = mt_rand()."_".preg_replace('/[^a-zA-Z0-9.-]/s', '_', $name);

    //insert into db, swich to PDO
    ...

    //Move file upload
    if (move_uploaded_file($_FILES['image']['tmp_name'], "gallery_pics/$name")) {
        echo "Upload complete! Go back to the <a href='gallery.php'>album</a>.";
    } else {
        echo "Failed to move uploaded file, check server logs!\n";
    }
} else {
    // error
    $error_message = $error_types[$_FILES['userfile']['error']];
    die("Error uploading file! ($error_message)<br/>Go back to the <a href='gallery.php'>gallery</a> page and try again.");
}
?>