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<?php echo preg_match('/(\w+) (\w+)/', 'rodrigo capile', $m); var_dump($m); echo preg_match('/(\w+) (\w+)/', 'rodrigo capile rodrigo capile rodrigo capile', $m); var_dump($m); echo preg_match_all('/(\w+) (\w+)/', 'rodrigo capile rodrigo capile rodrigo capile', $m); var_dump($m); echo preg_replace_callback('/(\w+) (\w+)/', function($matches) {return strtoupper(matches);},'rodrigo capile rodrigo capile rodrigo capile');

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