PHP

Password Validator Using Regex (PHP)

When building a secure web application, password validation is essential. While many tutorials teach “strong passwords,” they often overlook the importance of blocking characters that hackers commonly use in exploits like SQL injection or XSS. In this tutorial, we’ll create a PHP function that validates passwords, allows most characters, but blocks potentially dangerous ones. Why […]

How to use WordPress built-in Media Uploader

To use WordPress’s default media uploader in a frontend form, you can enqueue the WordPress media scripts and use JavaScript to handle the file upload interface on the frontend. Here’s a basic example: 1. Enqueue Media Scripts In your theme’s functions.php or a custom plugin, enqueue the necessary WordPress media scripts: 2. Create a Frontend […]

Resize an image to fit within a specified maximum width and height in PHP

Here is a PHP function that resizes an image to fit within a specified maximum width and height, preserving its aspect ratio. This can be useful if you’re working with WordPress or a similar PHP-based platform: Usage Explanation

Credit Card Number Validation in PHP

Here’s a PHP function to validate credit card numbers using the Luhn algorithm (also known as the “modulus 10” or “mod 10” algorithm), which is commonly used to verify credit card numbers: <?php function validateCreditCard($cardNumber) { // Remove any non-digit characters (e.g., spaces, dashes) $cardNumber = preg_replace(‘/D/’, ”, $cardNumber); // Check if the card number […]

Create individual orders for each item in WooCommerce cart

Add this to your theme’s functions.php file Keep only 1 product in the original order, delete other products from this order. Place the removed products (each separately) in a new order. function lpj_woocommerce_checkout_order_processed( $order_id, $posted_data, $order ) { // Get order currency $order_currency = $order->get_currency(); // Get order payment method $order_payment_gateway = $order->get_payment_method(); // Address […]

How to add same product to cart twice instead of changing quantity in WooCommerce

Add this to your theme’s functions.php file function lpj_add_prod_as_separate_cart_item( $cart_item_data, $product_id ) { $unique_cart_item_key = uniqid(); $cart_item_data[‘unique_key’] = $unique_cart_item_key; return $cart_item_data; } add_filter( ‘woocommerce_add_cart_item_data’, ‘lpj_add_prod_as_separate_cart_item’, 10, 2 );