public function unregisterFunction($name) {
		if( isset($this->env->functions[$name]) )
			unset($this->env->functions[$name]);
	}
public function unregisterFunction($name) {
		if( isset($this->env->functions[$name]) )
			unset($this->env->functions[$name]);
	}
public function unregisterFunction ( $ name ) { if ( isset ( $ this -> env -> functions [ $ name ] ) ) unset ( $ this -> env -> functions [ $ name ] ) ; }
Removed an already registered function

@param  string $name function name
Removed an already registered function