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  1. <?php
  2. $str = "my bird is funny and is a pipe is ispod";
  3. $keyword = "bird fun is";
  4. $keyword = implode('|',explode(' ',preg_quote($keyword)));
  5. var_dump($keyword);
  6. $str = preg_replace("/($keyword)/i","<b>$0</b>",$str);
  7. echo $str;
Success #stdin #stdout 0.02s 26196KB
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Standard input is empty
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string(11) "bird|fun|is"
my <b>bird</b> <b>is</b> <b>fun</b>ny and <b>is</b> a pipe <b>is</b> <b>is</b>pod
https://ideone.com/10CuZT
language:
PHP (php 7.3.5)
created:
175 days ago
visibility:
public

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