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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);
  10.  
  11. $ctrls = range(chr(0), chr(31));
  12. $ctrls[] = chr(127);
  13.  
  14. $clean_string = str_replace($ctrls, "", $text);
  15.  
  16. echo "\n\n".$clean_string;
Success #stdin #stdout 0.03s 25804KB
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stdin
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Standard input is empty
stdout
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hello



hello
https://ideone.com/ezMttU
language:
PHP (php 7.3.5)
created:
1 day ago
visibility:
public

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