Knowledge Base

Open the file in this path /wp-content/themes/theme-folder/function.php using some editor like DreamWeaver.

If you have activated the child theme then Open the file in this path /wp-content/themes/childtheme-folder/function.php using some editor like DreamWeaver and append the below code.

add_filter( 'add_to_cart_text', 'woo_custom_single_add_to_cart_text' );
add_filter( 'woocommerce_product_single_add_to_cart_text', 'woo_custom_single_add_to_cart_text' );
function woo_custom_single_add_to_cart_text() {
return __( 'Product Details', 'woocommerce' );
}

If you want to change the text under the shop page also means, paste the below code,

add_filter( 'add_to_cart_text', 'woo_custom_product_add_to_cart_text' );
add_filter( 'woocommerce_product_add_to_cart_text', 'woo_custom_product_add_to_cart_text' );
function woo_custom_product_add_to_cart_text() {
return __( 'Product Details', 'woocommerce' );
}