3v4l.org

run code in 300+ PHP versions simultaneously
<?php $Data = " HTTP/1.1 200 OK Date: Mon, 17 Jun 2019 19:32:37 GMT Server: Apache/2.4.38 (Win32) OpenSSL/1.1.1a PHP/7.2.15 X-Powered-By: PHP/7.2.15 Set-Cookie: Avisistema=ihk9t1ms6r8i0u1j5t6jpjrqei; path=/; HttpOnly Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate Pragma: no-cache Set-Cookie: Avisistema=ihk9t1ms6r8i0u1j5t6jpjrqei; expires=Tue, 18-Jun-2019 03:32:37 GMT; Max-Age=28799; path=/; HttpOnly Set-Cookie: SageFirmeware=Avisistema.A.0.2015.01.10; expires=Tue, 18-Jun-2019 03:32:37 GMT; Max-Age=28799; path=/; HttpOnly Content-Length: 232 Content-Type: application/json Some-Garbage: test string"; echo preg_match('~^Content-Type: \K.+~m', $Data, $match) ? $match[0] : 'fail';
Output for 7.1.25 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
application/json

preferences:
155.13 ms | 410 KiB | 5 Q