<?php // Declara a interface 'iTemplate' interface iTemplate { public function setVariable($name, $var); public function getHtml($template); } // Implementa a interface // Isso funcionará class Template implements iTemplate { private $vars = array(); public function setVariable($name, $var) { $this->vars[$name] = $var; } } // Isso NÃO funcionará // Fatal error: Class BadTemplate contains 1 abstract methods // and must therefore be declared abstract (iTemplate::getHtml) class BadTemplate extends Template { private $vars = array(); public function getHtml($template) { foreach($this->vars as $name => $value) { $template = str_replace('{' . $name . '}', $value, $template); } return $template; } } ?>
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