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  1. <?php
  2.  
  3. $input = 'some words link.com mysite.ru somelink.net';
  4. $forbidden = ['link.com', 'somelink.net'];
  5.  
  6. // Экранируем все спецсимволы в списке запрещённых сайтов
  7. $regexp = implode(array_map('preg_quote', $forbidden), '|');
  8. $output = preg_replace('/(https?:\/\/)?(www\.)?(' . $regexp . ')/i', '***', $input);
  9.  
  10. var_dump($output);
Success #stdin #stdout 0.02s 52432KB
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stdin
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Standard input is empty
stdout
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string(28) "some words *** mysite.ru ***"
https://ideone.com/FMyBPF
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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