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  1. $res2 = preg_replace_callback(
  2.     $regexp2,
  3.     function ($result) {
  4.         return "$result[1] " . mb_strtoupper($result[2]);
  5.     },
  6.     $res1
  7. );
  8.  
  9. $res2 = mb_strtoupper(mb_substr($res2, 0, 1)) . mb_substr($res2, 1);
Success #stdin #stdout 0.02s 24400KB
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$res2 = preg_replace_callback(
    $regexp2,
    function ($result) {
        return "$result[1] " . mb_strtoupper($result[2]);
    },
    $res1
);

$res2 = mb_strtoupper(mb_substr($res2, 0, 1)) . mb_substr($res2, 1);
https://ideone.com/tp1KOA
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

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