PostgreSQL-For-Wordpress/postgresql-for-wordpress
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Protect against undefined $wpdb in _rewrite

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The wpdb constructor makes some queries (e.g. for SQL_MODE) which are
rewritten.  This occurs before the constructor returns and therefore
before the $wpdb global is set.  Handle this without errors.

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
This commit is contained in:
Kevin Locke
2016-06-30 15:38:14 -07:00
parent 2fc28e9bd8
commit 5b7e9a80ff
1 changed files with 6 additions and 2 deletions
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8
pg4wp/driver_pgsql.php
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@ -197,6 +197,7 @@
function pg4wp_rewrite( $sql)
{
// Note: Can be called from constructor before $wpdb is set
global $wpdb;
$logto = 'queries';
@ -305,7 +306,10 @@
$pattern = '/@@SESSION.sql_mode/';
$sql = preg_replace( $pattern, "''", $sql);
$sql = str_replace('GROUP BY '.$wpdb->prefix.'posts.ID', '' , $sql);
if( isset($wpdb))
{
$sql = str_replace('GROUP BY '.$wpdb->prefix.'posts.ID', '' , $sql);
}
$sql = str_replace("!= ''", '<> 0', $sql);
// MySQL 'LIKE' is case insensitive by default, whereas PostgreSQL 'LIKE' is
@ -319,7 +323,7 @@
$sql = str_replace( 'post_date_gmt > 1970', 'post_date_gmt > to_timestamp (\'1970\')', $sql);
// Akismet sometimes doesn't write 'comment_ID' with 'ID' in capitals where needed ...
if( false !== strpos( $sql, $wpdb->comments))
if( isset($wpdb) && false !== strpos( $sql, $wpdb->comments))
$sql = str_replace(' comment_id ', ' comment_ID ', $sql);
// MySQL allows integers to be used as boolean expressions