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<?php print_r(ucwords(strtolower(implode(" ", array_filter(array_map('trim', explode(" ", " juan ├▒manuel Lallana ")))))));
based on tghon
Output for 4.3.0 - 5.6.38, hhvm-3.10.1 - 3.22.0, 7.0.0 - 7.3.1
Juan ├▒manuel Lallana