<?php

function db_connect(){
    $connection = mysql_connect("localhost","root","");

    if(!$connection){
        echo mysql_error();
        exit;
    }
    if(!$row = mysql_select_db("test")){
        echo mysql_error();
        exit;
    }
    return $connection;
}

function add_post($tresc){
    db_connect();
    $query = sprintf("INSERT INTO posts VALUES (NULL, '".$tresc."')");
    $result = mysql_query($query);
    $row = mysql_fetch_assoc($result);

    return $row;
}
add_post('test');
?>