In your sort, $a and $b are references to arrays. To access the first row (row 0) you need to dereference the arrays first. Change $a and $b to ${$a}[0] and ${$b}[0] in your sort routine.

-- 
dempa

In reply to Re: Sort a two-dimensional array? by dempa
in thread Sort a two-dimensional array? by Anonymous Monk

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