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<?php $string='direction-only'; echo preg_match_callback('/(\w*)-(\w*)/', function($match) {return implode('', array_map($match, function($string) {return ucfirst($string)}))}, $string);
Output for 5.4.1 - 5.4.45, 5.5.24 - 5.5.29, 5.6.8 - 5.6.13
Parse error: syntax error, unexpected '}' in /in/0nTf4 on line 3
Process exited with code 255.
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180.29 ms | 1395 KiB | 63 Q