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run code in 200+ php & hhvm versions
Bugs & Features
<?php echo preg_replace('/(\{.+\})/', '<span id="\\1"></span>', 'Qwe {test}, {testie}, {not valid}');
based on D3A79
Output for 4.3.0 - 7.2.0
Qwe <span id="{test}, {testie}, {not valid}"></span>