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<?php $string = 'string_snake_string'; $res = preg_replace_callback('/\_(.)/', function($match) { var_dump($match); return ucfirst($match); }, $field); var_dump($res);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $field in /in/kYIlA on line 7 Deprecated: preg_replace_callback(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /in/kYIlA on line 4 string(0) ""

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