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<?php $string = "An example of a website would be google.com or similar. However this is not what we are looking for"; $tlds = ['com', 'org', 'net']; echo preg_replace('~\.(?!(?:' . implode('|', $tlds) . ')\b)~i', '?', $string);
Output for git.master, git.master_jit, rfc.property-hooks
An example of a website would be google.com or similar? However this is not what we are looking for

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