vqmod_replace_example.xml

<?xml version="1.0" encoding="UTF-8"?>
<modification>
    <id>ExampleId</id>
    <version>0.1</version>
    <vqmver>2.5.1</vqmver>
    <author>Ville6000</author>

    <file name="catalog/view/theme/journal/template/product/product.tpl">
        <operation>
            <search position="replace"><![CDATA[<input type="button" value="<?php echo $button_cart; ?>" id="button-cart" class="button" />]]></search>
            <add><![CDATA[
            <?php if ($quantity == 0): ?>
                <input type="button" value="<?php echo $stock; ?>" id="button-cart" class="button disabled" disabled />
            <?php else: ?>
                <input type="button" value="<?php echo $button_cart; ?>" id="button-cart" class="button" />
            <?php endif; ?>
            ]]></add>
        </operation>
    </file>
</modification>