first release

README.md

@@ -2,7 +2,7 @@
 WordPress plugin that adds shortcodes for current, published, and last modified year and month.
 
 ## Purpose
-The main purpose of this plugin is to dynamically add dates to post titles. The shortcodes also work in meta descriptions (Rank Math and Yoast) and post content.
+The main purpose of this plugin is to dynamically add dates to post titles. The shortcodes also work in meta descriptions (Rank Math, Yoast, SEOPress) and post content.
 
 ## Available Shortcodes
 - **[currentmonth]** - current month
@@ -16,4 +16,5 @@ The main purpose of this plugin is to dynamically add dates to post titles. The
 The WordPress Date Shortcodes plugin is compatible with:
 - Rank Math
 - Yoast SEO
+- SEOPress
 - Contextual Related Posts (CRP)

wordpress-date-shortcodes.php

@@ -0,0 +1,89 @@
+<?php
+/**
+ * Plugin Name: WordPress Date Shortcodes
+ * Description: Adds shortcodes for current, published, and last modified year and month.
+ * Author: Infinitnet
+ * Author URI: https://infinitnet.io/
+ * Plugin URI: https://github.com/infinitnet/wordpress-date-shortcodes
+ * Update URI: https://github.com/infinitnet/wordpress-date-shortcodes
+ * Version: 1.0
+ * License: GPLv3
+ * Text Domain: wordpress-date-shortcodes
+ */
+
+// Shortcode functions for current year and current month
+if ( ! function_exists( 'infinitnet_current_year_shortcode' ) ) {
+    function infinitnet_current_year_shortcode() {
+        return date_i18n( 'Y' );
+    }
+    add_shortcode( 'currentyear', 'infinitnet_current_year_shortcode' );
+}
+
+if ( ! function_exists( 'infinitnet_current_month_shortcode' ) ) {
+    function infinitnet_current_month_shortcode() {
+        return date_i18n( 'F' );
+    }
+    add_shortcode( 'currentmonth', 'infinitnet_current_month_shortcode' );
+}
+
+// Shortcode to display the published year
+if ( ! function_exists( 'infinitnet_published_year_shortcode' ) ) {
+    function infinitnet_published_year_shortcode() {
+        global $post;
+        return get_the_date('Y', $post->ID);
+    }
+    add_shortcode( 'publishedyear', 'infinitnet_published_year_shortcode' );
+}
+
+// Shortcode to display the published month
+if ( ! function_exists( 'infinitnet_published_month_shortcode' ) ) {
+    function infinitnet_published_month_shortcode() {
+        global $post;
+        return get_the_date('F', $post->ID);
+    }
+    add_shortcode( 'publishedmonth', 'infinitnet_published_month_shortcode' );
+}
+
+if ( ! function_exists( 'infinitnet_modified_year_shortcode' ) ) {
+    function infinitnet_modified_year_shortcode() {
+        global $post;
+        return get_the_modified_date('Y', $post->ID);
+    }
+    add_shortcode( 'modifiedyear', 'infinitnet_modified_year_shortcode' );
+}
+
+// Shortcode to display the last modified month
+if ( ! function_exists( 'infinitnet_modified_month_shortcode' ) ) {
+    function infinitnet_modified_month_shortcode() {
+        global $post;
+        return get_the_modified_date('F', $post->ID);
+    }
+    add_shortcode( 'modifiedmonth', 'infinitnet_modified_month_shortcode' );
+}
+
+// Unified function to process meta content with shortcodes
+function infinitnet_process_meta_content( $content ) {
+    return do_shortcode( $content );
+}
+
+// Attach the function to filters for Rank Math, Yoast, and SEOPress
+add_filter( 'rank_math/frontend/title', 'infinitnet_process_meta_content' );
+add_filter( 'rank_math/frontend/description', 'infinitnet_process_meta_content' );
+add_filter( 'wpseo_title', 'infinitnet_process_meta_content' );
+add_filter( 'wpseo_metadesc', 'infinitnet_process_meta_content' );
+add_filter( 'seopress_titles_title', 'infinitnet_process_meta_content' );
+add_filter( 'seopress_titles_desc', 'infinitnet_process_meta_content' );
+
+// Filters for processing shortcodes in Contextual Related Posts (CRP) plugin
+add_filter('crp_title', 'do_shortcode');
+add_filter('crp_thumb_title', 'do_shortcode');
+add_filter('crp_thumb_alt', 'do_shortcode');
+
+// Filter for processing shortcodes in all titles
+function infinitnet_process_all_titles( $title ) {
+    if ( ! is_admin() ) {
+        return do_shortcode( $title );
+    }
+    return $title;
+}
+add_filter( 'the_title', 'infinitnet_process_all_titles' );