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@array1=(1,2,3) , @array2(7,8)  and array3=(1,5,23,3);

1-7-1, 1-7-5, 1-7-23, 1-7-3, 1-8-1, 1-8-5, 1-8-23, 1-8-3, 
2-7-1, 2-7-5, 2-7-23, 2-7-3, 2-8-1, 2-8-5, 2-8-23, 2-8-3,
3-7-1, 3-7-5, 3-7-23, 3-7-3, 3-8-1, 3-8-5, 3-8-23, 3-8-3

for ($i==0;$i<=$array1;$i++)
    {
...
                   }
           }
    }