Ticket #37928: 37928.diff

src/wp-includes/option.php

@@ -412 +412 @@
 
         $value = sanitize_option( $option, $value );
 
+        /**
+         * Filters a specific option before its value is (maybe) serialized and added.
+         *
+         * The dynamic portion of the hook name, `$option`, refers to the option name.
+         *
+         * @since 4.7.0
+         *
+         * @param mixed  $value  The new, unserialized option value.
+         * @param string $option Option name.
+         */
+        $value = apply_filters( "pre_add_option_{$option}", $value, $option );
+
+        /**
+         * Filters an option before its value is (maybe) serialized and added.
+         *
+         * @since 4.7.0
+         *
+         * @param mixed  $value  The new, unserialized option value.
+         * @param string $option Name of the option.
+         */
+        $value = apply_filters( 'pre_add_option', $value, $option );
+
+        // If the value is null, skip adding.
+        if ( null === $value ) {
+                return false;
+        }
+
         // Make sure the option doesn't already exist. We can check the 'notoptions' cache before we ask for a db query
         $notoptions = wp_cache_get( 'notoptions', 'options' );
         if ( !is_array( $notoptions ) || !isset( $notoptions[$option] ) )