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run code in 300+ PHP versions simultaneously
<?php system('locale -a'); die; setlocale(LC_ALL, array('ro.utf-8', 'ro_RO.UTF-8', 'ro_RO.utf-8', 'ro', 'ro_RO')); echo strftime('%a', mktime(0, 0, 0, 23, 11, 2015)), PHP_EOL; echo strftime('%a', mktime(0, 0, 0, 24, 11, 2015)), PHP_EOL; echo strftime('%a', mktime(0, 0, 0, 25, 11, 2015)), PHP_EOL; echo strftime('%a', mktime(0, 0, 0, 26, 11, 2015)), PHP_EOL; echo strftime('%a', mktime(0, 0, 0, 27, 11, 2015)), PHP_EOL; echo strftime('%a', mktime(0, 0, 0, 28, 11, 2015)), PHP_EOL; echo strftime('%a', mktime(0, 0, 0, 29, 11, 2015)), PHP_EOL;

preferences:
58.3 ms | 402 KiB | 5 Q