Check if email already exists in database

Question

I have a quiz form that is connected to my database, however I need to prevent duplicate email entries being inserted. I have tried the following:

//Check for d         


        

Answer 1

In PHP you can't place a function inside another function. So you need to place it outside your action_myquiz function. You'll also want to change mysql_result to mysql_num_rows. Something like this

//Check for duplicate email addresses
function checkEmail($email){
    $sql = DB::select('email')->from('myquiz')->where('email','=',"$email")->execute(); 
    $result = mysql_num_rows(mysql_query($sql),0) ;

    if( $result > 0 ){
        return true;
    }

    return false;
}

//Now start your other function
function checkEmail($email){

Then inside your action_myquiz function you need to call your checkEmail function. Like

if(checkEmail($email) === false) {
    //Proceed with insert
} else {
    //Don't do insert
}