MySQL總是給錯誤插入到數據庫

Question

我嘗試值從表單輸入添加到MySQL數據庫的時候，它用好的工作，最近它開始給我這個錯誤：

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'group) VALUES('כיריים על השיש','1','9')' at line 1.

我的代碼是：

if (isset($_POST['cat_name'])) 
{  
    $cat_name = mysql_real_escape_string($_POST['cat_name']); 
    $parent = mysql_real_escape_string($_POST['parent']); 
    $grp  = mysql_real_escape_string($_POST['grp']); 

    // See if that product name is an identical match to another product in the system 
    $sql   = mysql_query("SELECT id FROM categories WHERE cat_name='$cat_name' LIMIT 1"); 
    $productMatch = mysql_num_rows($sql); // count the output amount 

    if ($productMatch > 0) 
    { 
     echo 'Sorry you tried to place a duplicate "Category" into the system, <a href="category_add.php">click here</a>'; 
     exit(); 
    } 

    // Add this product into the database now 
    $sql2 = mysql_query("INSERT INTO categories (cat_name,parent,group) VALUES('$cat_name','$parent','$grp')") or die (mysql_error()); 
    $cid  = mysql_insert_id(); 
    $newname = "$cid.jpg"; 
    move_uploaded_file($_FILES['fileField']['tmp_name'], "../cat_images/$newname"); 
    header("location: category_add.php"); 
    exit(); 

Answer 1

使用此查詢，group是mysql中的保留字。您必須在列名稱後附加`。

$sql2 = mysql_query("INSERT INTO categories (`cat_name`,`parent`,`group`) VALUES('$cat_name','$parent','$grp')") or die (mysql_error());