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<?php $number = '10001212121212121500'; # you've to make it string then if (preg_match('/1000(.*?)1500/', $number, $match) == 1) { echo $match[1]; } ?>
Output for 7.1.25 - 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
121212121212
preferences:
85.8 ms | 407 KiB | 5 Q