<?php echo "1:"; print_r(ord('')); echo "\n2:"; print_r(empty('') ? 0 : ord('')); echo "\n3:"; print_r(('' === '' || '' === false) ? 0 : ord('')); echo "\n4:"; print_r(ord('0')); echo "\n5:"; print_r(empty('0') ? 0 : ord('0')); echo "\n6:"; print_r(('0' === '' || '' === false) ? 0 : ord('0'));
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