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  1. <?php
  2.  
  3. $string = 'patiënten';
  4.  
  5. var_dump(strlen($string));
  6. var_dump(mb_strlen($string));
  7.  
  8. /*EOF*/
Success #stdin #stdout 0.02s 24448KB
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stdin
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Standard input is empty
stdout
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int(10)
int(9)
https://ideone.com/E2typI
Proof that PHP is not multibyte safe by default
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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