Escapes characters that work as wildcard characters in a LIKE pattern.
The wildcard characters "%" and "_" as well as backslash are prefixed with a backslash. Use this to do a search for a verbatim string without any wildcard behavior.
You must use a query builder like db_select() in order to use db_like() on all supported database systems. Using db_like() with db_query() or db_query_range() is not supported.
For example, the following does a case-insensitive query for all rows whose name starts with $prefix:
$result = db_select('person', 'p')
->fields('p')
->condition('name', db_like($prefix) . '%', 'LIKE')
->execute()
->fetchAll();
Backslash is defined as escape character for LIKE patterns in DatabaseCondition::mapConditionOperator().
$string: The string to escape.
The escaped string.
function db_like($string) {
return Database::getConnection()
->escapeLike($string);
}