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Source View: postmeta_form_limit

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Source View

Line Code
634
635      /**
636       * Filter the number of custom fields to retrieve for the drop-down
637       * in the Custom Fields meta box.
638       *
639       * @since 2.1.0
640       *
641       * @param int $limit Number of custom fields to retrieve. Default 30.
642       */
643      $limit = apply_filters( 'postmeta_form_limit', 30 );
644      $sql = "SELECT meta_key
645           FROM $wpdb->postmeta
646           GROUP BY meta_key
647           HAVING meta_key NOT LIKE %s
648           ORDER BY meta_key
649           LIMIT %d";
650      $keys = $wpdb->get_col( $wpdb->prepare( $sql, $wpdb->esc_like( '_' ) . '%', $limit ) );
651      if ( $keys ) {
652           natcasesort( $keys );