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<?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'));
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, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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
string(24) "http://example.dev/ferfe" string(25) "https://example.dev/ferfe" string(24) "http://example.dev/ferfe" string(25) "https://example.dev/ferfe"

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