How to disable or remove the add cart button for product listings.
i want to remove via extension or coding PHP if you know plz inform me.
i used magento 1.9.0
I recommend you to read this guide from Magento:
It will give you an overview on customizing the Magento front-end.
You need to create a custom module to override addtocart.phtml file in order to disable add to cart button. Here's a complete guide which I have produced: https://magenticians.com/magento-2-disable-add-to-cart-button/
I hope that it will help you, Thanks!