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<?php $str = "luke"; echo preg_replace_callback('~^(?![eiux])[a-z]~', function($m) { return ucfirst($m[0]); }, $str); $str = "egg"; echo "\n" . preg_replace_callback('~^(?![eiux])[a-z]~', function($m) { return ucfirst($m[0]); }, $str);
Output for git.master, git.master_jit, rfc.property-hooks
Luke egg

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