Changeset 31947

Timestamp:

04/01/2015 02:21:15 AM (10 years ago)

Author:

pento

Message:

WPDB: When we check the character set of a column, and find that it's utf8mb4, we should also check that the current connection supports utf8mb4. It's possible that the environment may have changed since upgrading the DB, so we can fall back to utf8 when that happens.

Fixes #31771.

File:

• trunk/src/wp-includes/wp-db.php (modified) (1 diff)

trunk/src/wp-includes/wp-db.php

@@ -2220 +2220 @@
             if ( ! empty( $column->Collation ) ) {
                 list( $charset ) = explode( '_', $column->Collation );
+
+                // If the current connection can't support utf8mb4 characters, let's only send 3-byte utf8 characters.
+                if ( 'utf8mb4' === $charset && ! $this->has_cap( 'utf8mb4' ) ) {
+                    $charset = 'utf8';
+                }
+
                 $charsets[ strtolower( $charset ) ] = true;
             }