Online PHP editor | output for EfXtn

<?php $Key = "xyz123"; $Row = "zzxz1121"; $MemcacheDBKey = "cachevalue"; echo "Tried to increment with non-number ($Key) for cache ".$MemcacheDBKey; echo "\n"; echo "Tried to increment with non-number (".$Key.") for cache ".$MemcacheDBKey; echo "\n"; echo "Tried to increment with non-number ({$Key}) for cache ".$MemcacheDBKey; echo "\n"; echo 'Tried to increment with non-number ('.$Key.') for cache '.$MemcacheDBKey; echo "\n\n"; echo "Bad transaction key ($Key) for cache ".$MemcacheDBKey; echo "\n"; echo "Tried to delete non-existent row ($Row) for cache ".$MemcacheDBKey;