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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.



git-svn-id: https://develop.svn.wordpress.org/trunk@31947 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Gary Pendergast 2015-04-01 02:21:15 +00:00
parent 29093fe8dc
commit 55792b59a8
1 changed files with 6 additions and 0 deletions
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6
src/wp-includes/wp-db.php
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@ -2219,6 +2219,12 @@ class wpdb {
foreach ( $columns as $column ) {
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;
}