<?php function convert($url) { return preg_replace('#:\/\/([^.]*\.)?'.preg_quote('mydomain.tld').'#', '://example.dev', $url); } var_dump(convert('http://mydomain.tld/ferfe')); var_dump(convert('https://mydomain.tld/ferfe')); var_dump(convert('http://foo.mydomain.tld/ferfe')); var_dump(convert('https://foo.mydomain.tld/ferfe'));
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