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run code in 300+ PHP versions simultaneously
<?php $s = 'ČeCHLOvs Ě-Š-Č-Ř-Ž-Ý-Á-Í-É-Ú-Ů'; echo $s; echo "\n"; echo strtolower($s);
Output for git.master, git.master_jit, rfc.property-hooks
ČeCHLOvs Ě-Š-Č-Ř-Ž-Ý-Á-Í-É-Ú-Ů Čechlovs Ě-Š-Č-Ř-Ž-Ý-Á-Í-É-Ú-Ů

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