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add_filter( 'woocommerce_product_add_to_cart_url', 'elftoy_fix_for_individual_products', 10, 2 );
function elftoy_fix_for_individual_products( $add_to_cart_url, $product ){
 
	if( $product->get_sold_individually() // if individual product
	&& WC()->cart->find_product_in_cart( WC()->cart->generate_cart_id( $product->id ) ) // if in the cart
	&& $product->is_purchasable() // we also need these two conditions
	&& $product->is_in_stock() ) {
		$add_to_cart_url = wc_get_checkout_url();
	}
 

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function add_security_question_fields() {
$num1=rand(1,9);
$num2=rand(2,9);

echo "<p><label for='math' class='small'>Captcha：$num1 + $num2 = ? </label><input type='text' name='sum' class='input' value='' size='25'>"
."<input type='hidden' name='num1' value='$num1'>"
."<input type='hidden' name='num2' value='$num2'></p>";}
add_action('register_form','add_security_question_fields');
add_action( 'register_post', 'add_security_question_validate', 10, 3 );
function add_security_question_validate( $sanitized_user_login, $user_email, $errors){

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remove_action( 'woocommerce_before_checkout_form', 'woocommerce_checkout_coupon_form', 10 );

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add_filter( 'plugins_auto_update_enabled', '__return_false' );

add_filter( 'themes_auto_update_enabled', '__return_false' );

define( 'automatic_updater_disabled', true );

define( 'wp_auto_update_core', false );

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function webp_is_displayable($result, $path) {
    if ($result === false) {
        $displayable_image_types = array( IMAGETYPE_WEBP );
        $info = @getimagesize( $path );

        if (empty($info)) {
            $result = false;
        } elseif (!in_array($info[2], $displayable_image_types)) {
            $result = false;
        } else {

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<?php

add_filter( 'login_url', 'Custom_use_woocommerce_login_page' );

/**
 * If WooCommerce is active use the account page for logging in
 * @param string $login_url The URL for login.
 * @param string $redirect The URL to redirect back to upon successful login.
 * @param bool $force_reauth 
 * @return string

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add_filter( 'get_the_archive_title', 'my_theme_archive_title' );
/**
* Remove archive labels.
* 
* @param  string $title Current archive title to be displayed.
* @return string        Modified archive title to be displayed.
*/
function my_theme_archive_title( $title ) {
if ( is_category() ) {
$title = single_cat_title( '', false );

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/** * Completely Remove jQuery From WordPress */
function my_init() {
    if (!is_admin()) {
        wp_deregister_script('jquery');
        wp_register_script('jquery', false);
    }
}
add_action('init', 'my_init');

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/** * Install latest jQuery version 3.4.1. */
if (!is_admin()) {
	wp_deregister_script('jquery');
	wp_register_script('jquery', ("https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"), false);
	wp_enqueue_script('jquery');
}

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/** * Completely Remove jQuery From WordPress Admin Dashboard */
add_action('wp_enqueue_scripts', 'no_more_jquery');
function no_more_jquery(){
    wp_deregister_script('jquery');
}