mysql order by rand limit 1 really slow
function get_random_row($mytable,$conn){ $table_max_id = $conn->query("SELECT id FROM $mytable ORDER BY id DESC LIMIT 0, 1")[0]["id"]; $rand_id=rand(1,$table_max_id); $random_result = $conn->query("select * from $mytable where id = $rand_id"); #note: if you are missing some id's, we can call again until we get hit if(!$random_result){ return get_random_row($mytable,$conn); } return $random_result; }
