3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $nums = [ '5551234', '8045551234', '18045551234', '0018045551234', ]; foreach ($nums as $num) { echo substr($num, -10); echo ' '; echo substr($num, 0, -10); echo PHP_EOL; var_dump( substr($num, 0, -10) ); }
based on lZmfZ
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0beta1
5551234 bool(false) 8045551234 string(0) "" 8045551234 1 string(1) "1" 8045551234 001 string(3) "001"