Cant retrieve PHP arrays outside the assigning loop

Question

I am trying to create a 2-dimensional array, reading specific values from a (large) met file. The arrays are empty and I dont know why. I have the following array:

$varmet = array('tasmax', 'tasmin', 'pr', 'clt');

I have two loops:

The first is

for ($j = 0; $j <= 3; $j++)  {
...

I read the corresponding files and variables, etc. It works properly.

Then I have the other loop

for ($i = 1; $i <= 360; $i++) {
....
$valor = $valor * $correctp;

It works perfectly, retrieving the required value in $valor

The problem arise when I want to store the value in a different array, according to the met variable:

switch ($j) {
case 0: 
   $tmax[$i] = $valor;
break;
case 1: 
   $tmin[$i] = $valor;
break;
case 2: 
   $prec[] = $valor;
break;
case 3: 
   $clt[$i] = $valor;
break; } // Fin del switch

    }  // Fin del for para un fichero met
} // Fin del for para todas las varmet

The $tmax, $tmin, etc. have no value, although $valor does have. Furthermore, if I assign the array within the loop (i.e. $valorest[$j][$i] = $valor) it still have the values, but not outside it.

Anybody knows what I am doing wrong?

Please show us your complete code, not only bits and pieces. — deceze
– deceze ♦, Commented May 2, 2012 at 6:16

nithi · Accepted Answer · 2012-05-02 06:25:28Z

1

Try like this

$tmax = array(); //declare this outside the loop i.e before the loop starts

In switch case statement, replace the below line

$tmax[$i] = $valor;

with

array_push($tmax,$valor);

answered May 2, 2012 at 6:25

nithi

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