3v4l.org

run code in 300+ PHP versions simultaneously
<?php print preg_match('/^[a-z0-9 _.*",?{}@!=:;\/+~\\-]+$/i', 'v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDLVTHyanj4Pvh8Ye3vcOpvG29URNNbESNvjgfx8F12rig2Pd5gp1Y6NAZQgWzEFpDjeAMnFdpS+5U5XIAXz7nWVA061DXTXE2cvzHXGA0W8sLDOvdk3K7PXCRs1/c6JUgIhE+ViZebpShS3x4W72ooUXS2KvWe/ArpiF0Q+qrUlwIDAQAB');
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
1
preferences:
267.25 ms | 406 KiB | 460 Q