3v4l.org

run code in 300+ PHP versions simultaneously
<?php $text = <<<TEXT ir fsncif wcovcp fwfa abierpmz hbwf rif irctz ifchj bdrnv afwrmnvcricufe nivcm iffemfttmz baabihfe afwfatfe rivr nt irx er b iffegnm efgz erxi fboj tfoafv fba ani vcm zrn rxi nt TEXT; var_export( strtolower(strtr( $text, 'fiemtzrwahbpxnscjvduogql', strtoupper('endlsyovrgamwuqihtbzcfpk') )) );
Output for git.master, git.master_jit
'no equine victim ever randomly gave one noisy neigh about revolutionized until needlessly arranged reversed onto us now do a needful defy down each secret ear run til you own us'

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