3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = array( 'DOCUMENT_ROOT' => 'this', 'bob' => 'that' ); echo "Before: $foo[DOCUMENT_ROOT]\n"; define('DOCUMENT_ROOT', 'bob'); echo "After: {$foo[DOCUMENT_ROOT]}\n"; echo "Expected: ", $foo[DOCUMENT_ROOT];

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