<?php if ($product_info['quantity'] <= 0) { ?>
	
	<button type="button" class="btn btn-danger btn-lg btn-block">STOKTA YOK</button>
	
<?php } else { ?>
	
	<button type="button" id="button-cart" class="btn btn-primary btn-lg btn-block"><?php echo $button_cart; ?></button>

<?php } ?>