3v4l.org

run code in 300+ PHP versions simultaneously
<?php $tests = [ 'Paid a bill £0.90', 'Paid a bill £100', 'Paid a bill £100.10', 'Paid a bill £1000' ]; foreach ($tests as $test) { var_dump(sscanf($test, '%*[^£]£%f')[0]); echo "\n"; }
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
float(0.9) float(100) float(100.1) float(1000)

preferences:
101.49 ms | 1247 KiB | 4 Q