upgraded email filter to filter also wp hook

plugins/fipfcard_plugin/php/filter_mail.php

@@ -0,0 +1,94 @@
+<?php
+
+
+
+
+
+/*
+* filter emails in the form-builder hook, before the wp_mail hook
+* it receives the id of the user, no need to have the user still logged-in
+*/
+function filter_email_fb_CIPF($reply_body, $post_array) {
+	$id = $post_array['ID'];
+	// pattern : anything surrounded by '$$', ex : $$value$$
+	$pattern = '/\$\$(.*?)\$\$/';
+
+	// old version, using an outside callback, better readibility but cannot pass $id
+	//$new_body = preg_replace_callback($pattern, 'replace_words_CIPF', $reply_body);
+
+	// inline callback, with 'use' to get the id
+	$new_body = preg_replace_callback($pattern, function($matches) use ($id) {
+		$current_user = get_user_by('id', $id);
+		$query = $matches[1];
+		$result = $current_user->$query;
+		return $result;
+	}, $reply_body);
+
+	return $new_body;
+}
+add_filter('df_confirmation_body', 'filter_email_fb_CIPF', 10, 2); // the receive an email
+add_filter('df_notification_body', 'filter_email_fb_CIPF', 10, 2); // the administrator receive a notification
+
+
+/*
+* callback to provide the user info corresponding to the $$key_word$$
+*/
+function replace_words_CIPF($matches) {
+	$current_user = wp_get_current_user();
+	if ($current_user->ID === 0)
+		return "[no user logged in]";
+	$query = $matches[1];
+	$result = $current_user->$query;
+	return $result;
+}
+/*
+* filter emails at the final point : the wp_mail hook
+* it uses a callback that rely on the logged-in user
+* it will works well most of the time, but it's possible
+*  that a user logged out before the email is sent
+*  or event that a different user has already logged in
+*/
+function filter_email_wp_CIPF($args) {
+	error_log("in filter_email_wp_CIPF");
+
+	// pattern : anything surrounded by '$$', ex : $$value$$
+	$pattern = '/\$\$(.*?)\$\$/';
+
+	$old_body = $args['message'];
+	$new_body = preg_replace_callback($pattern, 'replace_words_CIPF', $old_body);
+	$args['message'] = $new_body;
+
+	return $args;
+}
+add_filter('wp_mail', 'filter_email_wp_CIPF', 10, 1);
+
+
+
+/*
+
+all filters in form_builder :
+
+1   $body            = apply_filters( 'df_notification_body', $body, $post_array );
+2   $email           = apply_filters( 'df_notifcation_recipient', $email, $form_id, $post_array );
+3   $title           = apply_filters( 'wpml_translate_single_string', $title_get, 'divi-form-builder', 'Edit Post Button Title Text' );
+
+4   $body            = apply_filters( 'df_contact_body', $body, $post_array );
+5   $body            = apply_filters( 'df_contact_body', $body, $post_array );
+
+6   $email           = apply_filters( 'df_contact_recipient', $email, $form_id, $post_array );
+7   $email           = apply_filters( 'df_contact_recipient', $email, $form_id, $processed_post_array );
+
+8   $reply_body      = apply_filters( 'df_confirmation_body', $reply_body, $post_array );
+9   $reply_body      = apply_filters( 'df_confirmation_body', $reply_body, $post_array );
+10  $reply_body      = apply_filters( 'df_confirmation_body', $reply_body, $post_array );
+11  $reply_body      = apply_filters( 'df_confirmation_body', $reply_body, $post_array );
+
+12  $message_content = apply_filters( 'the_content', get_post_field( 'post_content', $message_array['layout'] ) );
+13  $content         = apply_filters( 'the_content', get_post_field( 'post_content', $message_array['layout'] ) );
+14  $content         = apply_filters( 'the_content', get_post_field( 'post_content', $html_content_divi_layout) );
+
+*/
+
+
+
+?>