fixes every one of them at once. * Links that must leave the landing page use a leading slash and are unaffected. */ function landing_apply_base(string $html): string { if (stripos($html, ''; if (preg_match('~]*>~i', $html, $m, PREG_OFFSET_CAPTURE)) { $at = $m[0][1] + strlen($m[0][0]); return substr($html, 0, $at) . "\n\t" . $base . substr($html, $at); } return $base . $html; }