I am new to databases and security.

I am planning to put up a website.

I've read that sql-injection vulnerabilities can be very dangerous since the server might leak user passwords and credit-card information.

Are there any steps that I need to follow to prevent SQL injection vulnerabilities?

I was going through a wiki on sql-injection, but I didn't understood the following query:

SELECT * FROM users WHERE name = '" + userName + "';

2 Answers 2


you better use prepared statement from your programming source code, e.g. for PHP use PDO's prepare statement!

Check this - https://stackoverflow.com/questions/60174/best-way-to-prevent-sql-injection-in-php


I used a private function that vetted all the parameters passed into my services (Models in today's parlance). In a large application you might as well make it a 'global' function that all your scripts/models access when you're accepting any parameters from your frontend

private function protectMySQL($myParam)
    $myParam = stripslashes($myParam);
    $myParam = mysql_real_escape_string($myParam);
    return $myParam;

and then in each function

public function setMonthlyData($companyID, $userID, $resultArr)
    $myResponseObj = new Object();

    $myCompanyID = $this -> protectMySQL($companyID);  //vet $companyID
    $myUserID = $this -> protectMySQL($userID);        //vet $userID

    //execute query using parameters
    //then return the result 

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.