3v4l.org

run code in 500+ PHP versions simultaneously
<?php $arr = ["TAX ID. 01.000.589.0.055.000 or", "TAX ID : 01.000.589.0.055.000 or", "TAX ID 01.000.589.0.055.000 or", "TAX: 01.000.589.0.055.000"]; foreach($arr as $str){ echo preg_replace('/[^\d]/', '', $str) . "\n"; }
Output for 5.6.38, 7.1.0 - 7.1.24, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.23, 8.5.0 - 8.5.8
010005890055000 010005890055000 010005890055000 010005890055000
preferences:
104.45 ms | 1499 KiB | 4 Q