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<?php function removeLowerCharBeforeUpperChar(string $input): string { $output = ''; $length = strlen($input); for ($offset = 0; $offset < $length; ++$offset) { $currentOrd = ord($input[$offset]); $nextOrd = ord($input[$offset + 1] ?? '_'); if ($currentOrd < 97 || $currentOrd > 122 || $nextOrd < 65 || $nextOrd > 90 ){ $output .= $input[$offset]; } } return $output; } echo removeLowerCharBeforeUpperChar('MickMacKusa');
Output for git.master, git.master_jit, rfc.property-hooks
MicMaKusa

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