On Tuesday 11 June 2002 11:32, johannes reichardt wrote:
> hi list,
>
> i have a question regarding a class for matrix modifications so i dont
> have to re-invent the wheel ;)
>
> i would like to do things like this:
>
> matrix with 5*5 colums/rows
>
> x x x x x
> 0 0 0 0 0
> x x x x x
> x x x x x
If there isn't one, (have you tried phpclasses.org etc.), I think the
string functions are powerful enough.
What kind of manipulations you need? Is it simple column/row transforms or
doing all kinds of maptrix operations?
> hi list,
>
> i have a question regarding a class for matrix modifications
I think this will work. You'll have to test it to confirm:
$A[0][0] = "x";
$A[0][1] = "x";
$A[0][2] = "x";
$A[0][3] = "x";
$A[0][4] = "x";
$A[1][0] = "0";
$A[1][1] = "0";
$A[1][2] = "0";
$A[1][3] = "0";
$A[1][4] = "0";
$B = $C = array();
$B = $A[0];
$C = $A[1];
$A[0] = $C;
$A[1] = $B;
-O
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