Question

I have code as follows:

if($row = mysql_fetch_array($result)){
    if($rowprev = mysql_fetch_array($resultprev)){

    // Do stuff

    }
}

The questions I have, if the Row Count from $resultprev = 0 is there anyway to not allow the if statement to run?

Example:

$num_rows_resultprev = mysql_num_rows($resultprev);    

if($row = mysql_fetch_array($result)){
    if($num_rows_resultprev > 0){
        if($rowprev = mysql_fetch_array($resultprev)){
        }
    // Do something

    }
}

Answer 1

Two notes:

1) mysql_num_rows is unreliable, perhaps try a count query:

http://php.net/manual/en/function.mysql-num-rows.php

Note:

If you use mysql_unbuffered_query(), mysql_num_rows() will not return
the correct value until all the rows in the result set have been
retrieved.

2) your mysql_fetch_array may actually be returning something (eval to true).

Check the values of your variables and result sets.