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  1. <?php
  2.  
  3. $text = "\u{0019}hello";
  4.  
  5. print($text . "\n\n");
  6.  
  7. $text = preg_replace('/[^\PCc^\PCn^\PCs]/u', '', $text);
  8.  
  9. print($text);
Success #stdin #stdout 0.02s 24516KB
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stdin
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Standard input is empty
stdout
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hello

hello
https://ideone.com/hoGJw1
language:
PHP (php 7.3.5)
created:
3 years ago
visibility:
public

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