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<?php $i = 0; $k = 0; while ($i <= 100) { if ($i % 10 === 0 && $i > 0) { $k++; echo '$i = '. $i.' $k = '. $k . PHP_EOL; } $i++; }
Output for 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 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
$i = 10 $k = 1 $i = 20 $k = 2 $i = 30 $k = 3 $i = 40 $k = 4 $i = 50 $k = 5 $i = 60 $k = 6 $i = 70 $k = 7 $i = 80 $k = 8 $i = 90 $k = 9 $i = 100 $k = 10
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 $i = 10 $k = 1 $i = 20 $k = 2 $i = 30 $k = 3 $i = 40 $k = 4 $i = 50 $k = 5 $i = 60 $k = 6 $i = 70 $k = 7 $i = 80 $k = 8 $i = 90 $k = 9 $i = 100 $k = 10

preferences:
178.41 ms | 402 KiB | 153 Q