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WordPress Sanitizing And Escaping Cheat Sheet: Secure Your Code
Two rules keep WordPress code safe: sanitize input when data comes in, and escape output when data goes out to the browser. Sanitize early, escape late.
How To Run Safe Database Queries In WordPress With $Wpdb
The global $wpdb object lets you query the WordPress database directly. Use it when the standard functions are not enough, and always use $wpdb->prepare() to protect against SQL injection.
How To Make Api Requests In WordPress With Wp_Remote_Get And Wp_Remote_Post
WordPress has its own HTTP API for talking to external services. Use wp_remote_get() and wp_remote_post() instead of cURL, because they work on any hosting and respect the site settings.
How To Add Content Before Or After Posts With The The_Content Filter
The the_content filter runs every time WordPress prints the content of a post. Hook into it to add a call to action, an author box, an ad or any extra…
How To Create A Custom Shortcode In WordPress
A shortcode is a small tag in square brackets that the editor replaces with dynamic content. Register one with add_shortcode() and always return the output instead of printing it.
