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run code in 150+ php & hhvm versions
Bugs & Features
<?php echo preg_replace('/\b/u', '<$0>', 'and рублей');
Output for 5.5.27 - 5.5.35, 5.6.11 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
<>and<> <>рублей<>
Output for 5.3.4 - 5.5.26, 5.6.7 - 5.6.10
<>and<> <>�<>�ублей<>
Output for 4.3.0 - 5.3.3
<>and<> рублей