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run code in 300+ PHP versions simultaneously
<?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) ); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
5551234 string(0) "" 8045551234 string(0) "" 8045551234 1 string(1) "1" 8045551234 001 string(3) "001"
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 5551234 string(0) "" 8045551234 string(0) "" 8045551234 1 string(1) "1" 8045551234 001 string(3) "001"
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
5551234 bool(false) 8045551234 string(0) "" 8045551234 1 string(1) "1" 8045551234 001 string(3) "001"
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174.66 ms | 402 KiB | 162 Q