plugin-republic

<?php
/**
 * Hook: woocommerce_single_product_image_gallery_classes.
 * Example usage: filter classes for image gallery
 */
function plugin_republic_single_product_image_gallery_classes( $classes ) {
  $classes[] = 'extra-class';
  return $classes;
}
add_filter( 'woocommerce_single_product_image_gallery_classes', 'plugin_republic_single_product_image_gallery_classes' );

plugin-republic

<?php
/**
 * Hook: woocommerce_before_single_product.
 *
 * @hooked woocommerce_output_all_notices - 10
 * add_action( 'woocommerce_before_single_product', 'woocommerce_output_all_notices', 10 );
 */
do_action( 'woocommerce_before_single_product' );
?>

plugin-republic

remove_filter( 'woocommerce_short_description', 'custom_callback', 10 );

plugin-republic

remove_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_rating', 10 );

plugin-republic

add_filter( $hook_name, $callback_function, $priority, $args );

plugin-republic

add_filter( 'woocommerce_short_description', 'plugin_republic_short_description', 5 );
function plugin_republic_short_description( $short_description ) {
  $short_description = sprintf(
    '%s<p>Special offer!</p>',
    $short_description
  );
  return $short_description;
}

plugin-republic

add_action( $hook_name, $callback_function, $priority, $args );

plugin-republic

add_action( 'woocommerce_single_product_summary', 'plugin_republic_single_product_summary', 5 );
function woocommerce_template_single_title() {
  echo 'Our content goes here';
}

plugin-republic

$short_description = apply_filters( 'woocommerce_short_description', $post->post_excerpt );

plugin-republic

do_action( 'woocommerce_single_product_summary' );