checking if name already exists

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Hey Guys,
I am trying to check mysql table if the name already exists: this is the code

SQL

if (mysql_num_rows(mysql_query('SELECT COUNT(*) FROM table WHERE FirstName=\'' . $firstname . '\' AND LastName=\'' . $lastname . '\' LIMIT 1')) == 0)
    {
        
        $query = "INSERT INTO table(FirstName,LastName, number)VALUES('$firstname', '$lastname', 'number')";
        mysql_query($query,$con);
        echo " uploaded";

    }

    else
    {
        echo "Record already exists";
    }

but i am getting record already exists all the time and it isn't inserting anything. How to fix this please help.

Posted 30-Oct-12 9:57am

Sam_Servin

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2 solutions

Solution 2

thanks i got it now.
I used a select query without count matching the names and it worked.

Posted 30-Oct-12 13:12pm

Sam_Servin

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Sandeep Mewara 30-Oct-12 22:39pm

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onelopez · Accepted Answer · 2012-10-30T10:38:00

Solution 1

Count function always returns at least one row. So when you compare if rows returned is 0, then it fails and goes to the else statement. What you need to do is check the value returned by count or change the query to

SQL

SELECT 1 FROM TABLE WHERE FIRSTNAME = 'John' AND LASTNAME = 'Smith'

Posted 30-Oct-12 10:38am

onelopez

Comments

Sandeep Mewara 30-Oct-12 22:39pm

OP's comment:
thanks i got it now.
I used a select query without count matching the names and it worked.