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<?php $string = 'string_snake_string'; $res = preg_replace("/\_(.)/e", "strtoupper('\\1')", $string); var_dump($res);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /in/DcvU5 on line 4 NULL

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