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<?php $regex = '#<tag foo="bar">([\w\s]+[^\s]+)\s?</tag>#'; echo preg_replace($regex, '\1', '<tag foo="bar">Jacopo Nuzzi</tag>'); echo preg_replace($regex, '\1', '<tag foo="bar">Jacopo Nuzzi </tag>'); echo preg_replace($regex, '\1', '<tag foo="bar">Jacopo </tag>'); echo preg_replace($regex, '\1', '<tag foo="bar">Jacopo</tag>');
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Jacopo NuzziJacopo NuzziJacopoJacopo

preferences:
268.5 ms | 406 KiB | 460 Q