3v4l.org

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<?php for ($num = 74.30; $num < 74.41; $num += .01) { var_export(sprintf('%.02f => £%.02f', $num, ceil($num * 20 - .1) / 20)); echo "\n"; } $num = 0; var_export(sprintf('%.02f => £%.02f', $num, ceil($num * 20 - .1) / 20));

preferences:
18.7 ms | 406 KiB | 5 Q