Question

I have a PHP code, that will run a Select query to check if a particular personName is present. If it is present we should return a JSON stating so, and if not present we should send a JSON response stating the same.

My code so far;

$rst= mysql_query("select* from Person
where personname='Labby'");


 while($r= mysql_fetch_array($rst) ){

// Now what ??
}

// How do i know if $rst= mysql_query("select* from Person
where personname='Labby'"); , returned true or false ? and depending on that create a JSON response. How can i do this ?

Answer 1

Either switch your query to use COUNT(*) and retrieve the value, or use mysql_num_rows() (or the mysqli or PDO equivalent).