<?php
abstract class animal
{
function makenoise()
{
echo $this->noise;
}
}
//the extends bit is called inheritance. both classes cat and dog
//'inherit' makenoise from animal in this case
class cat extends animal
{
public $noise = 'meow';
}
$cat = new cat();
$cat->makenoise();
class dog extends animal
{
public $noise = 'woof';
}
$dog = new dog();
$dog->makenoise();
<?php
class cat
{
function makenoise()
{
return 'meow';
}
function speed()
{
return 'fast';
}
}
$cat = new cat();
echo 'the cat says ' . $cat->makenoise() . ' and is very ' . $cat->speed();
