PHP上传图片后显示错误 "mysql extension is deprecated"

Question

我已成功在 MYSQL 中上传图片，但是图片上传后出现以下错误。

Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in x:\xxx\xxxx\xxxx\upload.php on line 6 done

if(count($_FILES) > 0) {
if(is_uploaded_file($_FILES['userImage']['tmp_name'])) {
    mysql_connect("localhost", "root", "root");
    mysql_select_db ("test");
    $imgData =addslashes(file_get_contents($_FILES['userImage']['tmp_name']));
    $imageProperties = getimageSize($_FILES['userImage']['tmp_name']);

    $sql = "INSERT INTO output_images(imageType ,imageData)
    VALUES('{$imageProperties['mime']}', '{$imgData}')";
    $current_id = mysql_query($sql) or die("<b>Error:</b> Problem on Image Insert<br/>" . mysql_error());
    if(isset($current_id)) {
        echo "done";
    }
}
}

Answer 1

这是因为您使用的 PHP 版本不支持 mysql_* 函数，而需要使用 mysqli_* 函数。 (http://php.net/manual/en/mysqli.summary.php)

您的代码将如下所示:

if(count($_FILES) > 0) {
if(is_uploaded_file($_FILES['userImage']['tmp_name'])) {
    mysqli_connect("localhost", "root", "root");
    mysqli_select_db ("test");
    $imgData =addslashes(file_get_contents($_FILES['userImage']['tmp_name']));
    $imageProperties = getimageSize($_FILES['userImage']['tmp_name']);

    $sql = "INSERT INTO output_images(imageType ,imageData)
    VALUES('{$imageProperties['mime']}', '{$imgData}')";
    $current_id = mysqli_query($sql) or die("<b>Error:</b> Problem on Image Insert<br/>" . mysqli_error());
    if(isset($current_id)) {
        echo "done";
    }
}
}

我个人的建议是使用 PDO ( http://php.net/manual/en/book.pdo.php )