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  1. <?php
  2. $keywords = array('dog', 'cat', 'cow');
  3. $text = 'I own two dogs, four cats, and twenty cows.';
  4. $regexp = '/\b(' . implode('|', $keywords) . ').*?\b/';
  5. echo preg_replace($regexp, '<b>$0</b>', $text);
  6.  
Success #stdin #stdout 0.01s 20568KB
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Standard input is empty
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I own two <b>dogs</b>, four <b>cats</b>, and twenty <b>cows</b>.
https://ideone.com/MjmKrm
language:
PHP (php 7.3.5)
created:
11 years ago
visibility:
secret

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