Swat/SwatDate.php
public function subtractSeconds($seconds)
    {
        $seconds = (float) $seconds;
        $seconds = -$seconds;
        return $this->addSeconds($seconds);
    }
public function subtractSeconds($seconds)
    {
        $seconds = (float) $seconds;
        $seconds = -$seconds;
        return $this->addSeconds($seconds);
    }
public function subtractSeconds ( $ seconds ) { $ seconds = ( float ) $ seconds ; $ seconds = - $ seconds ; return $ this -> addSeconds ( $ seconds ) ; }
Subtracts the specified number of seconds from this date

@param float $seconds the number of seconds to subtract.

@return this object on success or false on failure.
Subtracts the specified number of seconds from this date