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<?php function v1($value) { return implode(array_map(function($value) { return ucfirst($value); }, explode('_', $value))); } #function v2($value) { # return preg_replace_callback('/([A-Z])/', function($char) { return '_'.strtolower($char[1]); }, lcfirst($value)); #} for($x = 0; $x < 10000; $x++){ $foo = v1('foo_bar_baz_bee'); }
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