Basic for loop ++; problem

[james909]

I am getting an error trying to get a for loop to work when looping through an array:

for ($a=1; $a<6; $a++)
{
$setuplength++;
for ($b=1; $b<7; $b++)
{
$fleetarray[$a][w$b] = $matches[0][$setuplength+5];
}

}

The code [w$b] is throwing up an error, I am try to assign the array values [w1], [w2], [w3], [w4], [w5], [w6] as it goes through the loop, but it is not letting me get the number from $b to use inside the array value.

 

What is the correct way to code this?

[Barand]

$fleetarray[$a]["w$b"]