Disable Gutenberg & Return to the Classic WordPress Editor Without any Plugins

add_filter( 'woocommerce_product_get_stock_quantity' ,'custom_get_stock_quantity', 10, 2 );
add_filter( 'woocommerce_product_variation_get_stock_quantity' ,'custom_get_stock_quantity', 10, 2 );
function custom_get_stock_quantity( $value, $product ) {
    $value = 15; // <== Just for testing
    return $value;
}

<script>
jQuery( document ).ready(function($){
	$(document).on('click','.elementor-location-popup a', function(event){
		elementorProFrontend.modules.popup.closePopup( {}, event);
	})
});
</script>

function search_by_sku( $search, &$query_vars ) {
    global $wpdb;
    if(isset($query_vars->query['s']) && !empty($query_vars->query['s'])){
        $args = array(
            'posts_per_page'  => -1,
            'post_type'       => 'product',
            'meta_query' => array(
                array(
                    'key' => '_sku',
                    'value' => $query_vars->query['s'],
                    'compare' => 'LIKE'
                )
            )
        );
        $posts = get_posts($args);
        if(empty($posts)) return $search;
        $get_post_ids = array();
        foreach($posts as $post){
            $get_post_ids[] = $post->ID;
        }
        if(sizeof( $get_post_ids ) > 0 ) {
                $search = str_replace( 'AND (((', "AND ((({$wpdb->posts}.ID IN (" . implode( ',', $get_post_ids ) . ")) OR (", $search);
        }
    }
    return $search;
    
}
    add_filter( 'posts_search', 'search_by_sku', 999, 2 );

/***** Shorten Post/Page link  *****/
//============================
add_filter( 'get_shortlink', function ( $shortlink ) {
    return $shortlink;
});

//******--- Remove Font Awesome ---*****
//===============================
add_action( 'elementor/frontend/after_register_styles',function() {
	foreach( [ 'solid', 'regular', 'brands' ] as $style ) {
		wp_deregister_style( 'elementor-icons-fa-' . $style );
	}
}, 20 );

//*****---  Remove Eicons:  ---*****
//==========================
add_action( 'wp_enqueue_scripts', 'remove_default_stylesheet', 20 ); 
function remove_default_stylesheet() { 
	wp_deregister_style( 'elementor-icons' ); 
}

input { -webkit-user-select:text;}

if ( is_single() ) {
  $current_post_id = get_queried_object_id();
  $current_category_id = get_the_category( $current_post_id )[0]->cat_ID;

  $args = array(
    'category' => $current_category_id,
    'post__not_in' => array( $current_post_id ),
    'posts_per_page' => 3,
  );

  $related_posts = new WP_Query( $args );

  if ( $related_posts->have_posts() ) {
    echo '<h2>Related Posts:</h2>';
    while ( $related_posts->have_posts() ) {
      $related_posts->the_post();
      echo '<a href="' . get_the_permalink() . '">' . get_the_title() . '</a><br>';
    }
    wp_reset_postdata();
  }
}

//How to Disable Gutenberg & Return to the Classic WordPress Editor Without any Plugins

add_filter( 'use_block_editor_for_post', '__return_false' );

//Disable Astra Google Fonts

add_filter('astra_google_fonts_selected', function($fonts) {
    return [];
});

.oxygen-body{
  /* Full width styling for Oxygen Gutenberg blocks and Gutenberg images*/
  width:100vw;
  overflow-x:hidden;
}

.alignfull {
    margin-left  : calc( -100vw / 2 + 100% / 2 );
    margin-right : calc( -100vw / 2 + 100% / 2 );
    max-width    : 100vw;
}

$ npx @wordpress/create-block [options] [slug]

<?php
/**
 * Gutenberg Examples Stylesheets
 */
 
function gutenberg_examples_02_register_block() {
    wp_register_script(
        'gutenberg-examples-02',
        plugins_url( 'block.js', __FILE__ ),
        array( 'wp-blocks', 'wp-element' ),
        filemtime( plugin_dir_path( __FILE__ ) . 'block.js' )
    );
 
    wp_register_style(
        'gutenberg-examples-02-editor',
        plugins_url( 'editor.css', __FILE__ ),
        array( 'wp-edit-blocks' ),
        filemtime( plugin_dir_path( __FILE__ ) . 'editor.css' )
    );
 
    wp_register_style(
        'gutenberg-examples-02',
        plugins_url( 'style.css', __FILE__ ),
        array( ),
        filemtime( plugin_dir_path( __FILE__ ) . 'style.css' )
    );
 
    // Allow inlining small stylesheets on the frontend if possible.
    wp_style_add_data( 'gutenberg-examples-02', 'path', dirname( __FILE__ ) . '/style.css' );
 
    register_block_type( 'gutenberg-examples/example-02-stylesheets', array(
        'api_version' => 2,
        'style' => 'gutenberg-examples-02',
        'editor_style' => 'gutenberg-examples-02-editor',
        'editor_script' => 'gutenberg-examples-02',
    ) );
}
add_action( 'init', 'gutenberg_examples_02_register_block' );

add_theme_support( 'block-templates' );

remove_theme_support(  'block-templates' );