PHP how to do unless string match..? -

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i have code:

<?php unless($category['name'] == "offer") { ?> <p>write unless category name equal "offer"</p> <?php } ?>

i know wrong, how create unless statement in php there in rails?

<?php if ($category['name'] != "offer") { ?> <p>write unless category name equal "offer"</p> <?php } ?>

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