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How-to articles, tricks, and solutions about WORDPRESS

Facebook SDK returned an error: The "state" param from the URL and session do not match

This error message appears when the SDK is being used to make an OAuth request to Facebook, and the "state" parameter in the URL doesn't match the "state" value that was stored in the user's session.

php wordpress facebook facebook-graph-api

Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 71 bytes)

This is a PHP error message that indicates your script is trying to use more memory than the amount specified in the PHP configuration.

php wordpress fatal-error memory-limit

get all the images from a folder in php

To get all the images from a folder in PHP, you can use the glob function.

php image get wordpress

Get Category name from Post ID

To get the category name from a post ID in PHP, you can follow these steps:

php wordpress categories

Get custom product attributes in Woocommerce

To retrieve custom product attributes in WooCommerce, you can use the get_post_meta() function.

php wordpress woocommerce product custom-taxonomy

How do I generate a custom menu/sub-menu system using wp_get_nav_menu_items in WordPress?

To generate a custom menu/sub-menu system using wp_get_nav_menu_items in WordPress, you can follow these steps:

php wordpress menu wordpress-theming submenu

How to display Woocommerce Category image?

To display a category image in WooCommerce, you can use the woocommerce_subcategory_thumbnail hook in your theme's functions.php file.

php wordpress woocommerce thumbnails

How to display woocommerce sale price or regular price if there is no sale price

In WooCommerce, you can display the sale price or regular price of a product using the following code snippet:

php wordpress woocommerce

How to fix Warning Illegal string offset in PHP

The "Illegal string offset" warning in PHP occurs when you try to access an offset of a string variable as if it were an array.

php arrays casting wordpress offset

How to write own DD() function same as laravel?

To create your own version of the Laravel DD() function, you can create a new function in your codebase and have it take in any number of arguments.

php laravel wordpress var-dump

Multiple excerpt lengths in wordpress

In WordPress, the length of the excerpt (the summary text displayed on the homepage or archive pages) can be controlled by the theme or by a plugin.

php function wordpress

Nginx serves .php files as downloads, instead of executing them

There are several reasons why Nginx may serve PHP files as downloads instead of executing them.

php wordpress nginx location fastcgi

PHP fopen() Error: failed to open stream: Permission denied

This error message is indicating that the PHP script is trying to open a file using the fopen() function, but the script does not have the necessary permissions to access the file.

php wordpress fopen permission-denied

Proper URL forming with a query string and an anchor hashtag

To form a proper URL with a query string and an anchor hashtag in PHP, you can use the http_build_query() function to create the query string and concatenate it to the base URL using the ?

php url wordpress standards url-fragment

What's the net::ERR_HTTP2_PROTOCOL_ERROR about?

net::ERR_HTTP2_PROTOCOL_ERROR is an error that occurs in the Google Chrome browser when there is an issue with the HTTP/2 protocol.

php curl wordpress google-chrome http2

Woocommerce get products

You can retrieve a list of products in WooCommerce using the get_products() function.

php wordpress woocommerce

WordPress - Check if user is logged in

In WordPress, you can use the function is_user_logged_in() to check if a user is currently logged in.

php wordpress

WordPress Issue: Cannot modify header information - headers already sent by

This error message appears when a PHP script is trying to modify the headers of an HTTP response after the headers have already been sent.

php wordpress