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<?php class cls { protected $active = 'false'; public function __construct() { $this->active = 'active'; } public function activate() { $this->active = 'active'; } public function deactivate() { $this->active = 'inactive'; } public function isActive() { return $this->active === 'active'; } public function __toString() { return sprintf('<li class="%s"></li>', $this->active); } } echo new cls;
Output for git.master, git.master_jit, rfc.property-hooks
<li class="active"></li>

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