- var_dump: documentation ( source)
<?php
class A {} class B {}
interface Handler {
public function handle(&$alterValue);
}
class FooHandler implements Handler {
public function handle(&$alterValue) { $alterValue .= ' is altered'; }
}
$m = 'Foo';
$fh = new FooHandler;
var_dump($m);
$fh->handle($m);
var_dump($m);