php - How to use function in one class in another -

im newbie in oop. have file database.php

class database{     function db_row($con,$stuff,$table,$statements){         return mysqli_fetch_array(mysqli_query($con,"select {$stuff} `{$table}` {$statements}"));     }} 

and have file player.php

class player{     function get_id($con,$token){     }} 

and want use function db_row-class database(file database.php) in class player(file player.php)

how can this?

you try below. basically, instantiate database object in player's constructor, can access methods in database inside player shown below.

<?php      class database{         function db_row($con,$stuff,$table,$statements){             echo "success";             //return mysqli_fetch_array(mysqli_query($con,"select {$stuff} `{$table}` {$statements}"));     }}      class player {         var $db;          function __construct() {              $this->db = new database();         }          function get_id($con,$token){             $this->db->db_row(null, null, null, null);         }     }      $player = new player();     $player->get_id(null, null);  ?>