function disable(string $name) {
        $pos = array_search($name, $this->_enableList);
        if ($pos === false)
            return;
        unset($this->_enableList[$pos]);
    }
function disable(string $name) {
        $pos = array_search($name, $this->_enableList);
        if ($pos === false)
            return;
        unset($this->_enableList[$pos]);
    }
function disable ( string $ name ) { $ pos = array_search ( $ name , $ this -> _enableList ) ; if ( $ pos === false ) return ; unset ( $ this -> _enableList [ $ pos ] ) ; }
Disable formula.

@param string $name
Disable formula .