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  1. <?php
  2. $array = array();
  3. $input = 'this is a #test';
  4. $regex = '/(#\w*)/';
  5. $output = preg_replace_callback(
  6.   $regex,
  7.   create_function(
  8.     '$match', 'global $array; 
  9.      $array[] = $match[1]; return "<strong>" . $match[1] . "</strong>";'),
  10.   $input);
  11. echo "Result string:\n", $output, "\n\n";
  12. echo "Result array:\n";
  13. print_r($array);
  14. ?>
Success #stdin #stdout 0.02s 13112KB
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stdin
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Standard input is empty
stdout
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Result string:
this is a <strong>#test</strong>

Result array:
Array
(
    [0] => #test
)
https://ideone.com/y4KuXh
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

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