WP_Site_Query::get_search_sql( string $string, array $columns )

Used internally to generate an SQL string for searching across multiple columns.

Parameters

$string

(Required) Search string.

$columns

(Required) Columns to search.

Return

(string) Search SQL.

Source

File: wp-includes/class-wp-site-query.php 

	protected function get_search_sql( $string, $columns ) {
		global $wpdb;

		if ( false !== strpos( $string, '*' ) ) {
			$like = '%' . implode( '%', array_map( array( $wpdb, 'esc_like' ), explode( '*', $string ) ) ) . '%';
		} else {
			$like = '%' . $wpdb->esc_like( $string ) . '%';
		}

		$searches = array();
		foreach ( $columns as $column ) {
			$searches[] = $wpdb->prepare( "$column LIKE %s", $like );
		}

		return '(' . implode( ' OR ', $searches ) . ')';
	}

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Related

Uses

Uses
Uses Description
wp-includes/wp-db.php: wpdb::esc_like()

First half of escaping for LIKE special characters % and _ before preparing for MySQL.
wp-includes/wp-db.php: wpdb::prepare()

Prepares a SQL query for safe execution. Uses sprintf()-like syntax.

Used By

Used By
Used By Description
wp-includes/class-wp-site-query.php: WP_Site_Query::get_site_ids()

Used internally to get a list of site IDs matching the query vars.

Changelog

Changelog
Version Description
WP-4.6.0 Introduced.