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function callback($buffer) {
	$matches = array(
		'hbspt.forms.create',
	);

		foreach ( $matches as $match ) {
			if ( strpos( $buffer, $match ) !== false ) {
			    $result = preg_grep("/hbspt\s*([\s\S]*?);/", $matches);
				$before = 'before';
				$after = 'after';
				$final = $before = $after;
				$regexes = '/hbspt\s*([\s\S]*?);/';
				
				
				return preg_replace( $regexes, "before $result after", $buffer );
				
			}
		}

	return $buffer;
}