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  1. <?php
  2.  
  3.  
  4. $str = '3 5п -Б test 8п -М test';
  5. echo preg_replace(
  6.     array(
  7.         '~\dп\s-Б~u',
  8.         '~\dп\s-М~u',
  9.     ),
  10.     array(
  11.         'Больше',
  12.         'Меньше'
  13.     ),
  14.     $str
  15. ), "\n";
  16.  
  17. echo preg_replace_callback(
  18.     '~\dп\s-(Б|М)~u', function($a) {
  19.         if ($a[1] == 'М') {
  20.             return 'Меньше';
  21.         }
  22.         return 'Больше';
  23.     },
  24.     $str
  25. ), "\n";
Success #stdin #stdout 0.01s 20520KB
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stdin
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Standard input is empty
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3 Больше test Меньше test
3 Больше test Меньше test
https://ideone.com/h6mqDM
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

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