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<?php $str = 'Lorum ipsum: 7-Dt Dolor Sit, Amet 8-AM. Consectetur adipiscing'; echo( preg_replace("/(?:[^\s\d]+\d|\d+[^\s\d])\S*\b/", " ",$str) );
Output for 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Lorum ipsum: Dolor Sit, Amet . Consectetur adipiscing

preferences:
140.8 ms | 403 KiB | 177 Q