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<?php preg_match_all('(?:"?([^"]*)"?\s)?(?:<?(.+@[^>]+)>?)', 'John <johndoe@example.com>', $name_and_tags); echo $name_and_tags;
Output for 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 - 8.3.6
Warning: preg_match_all(): Unknown modifier '?' in /in/qmA55 on line 3
Output for 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Warning: preg_match_all(): Unknown modifier '?' in /in/qmA55 on line 3 Array
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier '?' in /in/qmA55 on line 3 Array

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