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 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
010005890055000 010005890055000 010005890055000 010005890055000
preferences:
28.86 ms | 1152 KiB | 7 Q