Split SQL text into multiple queries

/**
 * Split the SQL dump code and return as queries array.
 * @param string $raw SQL code to parse
 * @return array List of queries
 */
function splitSqlText ( $raw ) {
	// the regex needs a trailing semicolon
	$raw = trim ( (string) $raw );

	if ( substr ( $raw, -1 ) !== ";") {
		$raw .= ";";
	}

	// i spent 3 days figuring out this line
	preg_match_all( "/(?>[^;']|(''|(?>'([^']|\\')*[^\\\]')".
		"))+;/ixU", $raw, $matches, PREG_SET_ORDER );

	$querySplit = [];

	foreach ( $matches as $match ) {
		// get rid of the trailing semicolon
		$querySplit[] = substr( $match[0], 0, -1 );
	}

	return $querySplit;
}