Syntax Question

[saracen]

Hi,

Wondering if anyone can tell me what Im doing wrong

I have a variable thats passed to a php page. For simplicity sake lets say the variable is called x and can have a value of a,b or c

I then create some arrays along the lines of

$array_a=array ('a1','a2','a3');
$array_b=array('b1','b2','b3');
$array_c=array('c1','c2','c3');

I then create a variable
$tempvar='$array_'.$x;

I then have a foreach statement of

foreach ($tempvar as $testvar)

The problem is I get an invalid argument as result.

Please help...

[IceD]

$tempvar='array_'.$x;
foreach ($$tempvar as $testvar)

[saracen]

Unfortunately not, it still gives an invalid argument error.

[IceD]

You are wrong! Try it agaian:

$x = 'a';
$array_a=array ('a1','a2','a3'); 
$array_b=array('b1','b2','b3'); 
$array_c=array('c1','c2','c3'); 
$tempvar='array_'.$x;
foreach ($$tempvar as $testvar) echo $testvar;

[saracen]

If I hard code $x as in $x="a" it works fine. Problem is $x can be a,b or c . Actually, heres the actual code:

<SCRIPT LANGUAGE="JavaScript"><!--

function popSelect(arraySize) {

var tempArray=new Array(arraySize);
//define your temp_array with the lodges that match up 
//with the location, as passed from the previous page
for (var j=0;j<arraySize;j++) {
     tempArray[j]=document.test_form.resort[document.test_form.resort.selectedIndex].value+'_'+j;     
}
for (var i=1;i<=arraySize;i++) {
     document.test_form.hotel[i]=new Option(tempArray[i-1]);
     //put whatever argument for which lodge is to be selected by
     //default after the change, instead of the i==2     
     if (i==2) {
          document.test_form.hotel[i].selected=true;     
     }
}

}

-->
</script>

<?
//$these arrays should come from your database. You could use SQL queries and while loops
//to define the options for the select objects instead of creating these arrays
$test_array_loc=array("Marmaris","Icmeler","Bodrum");
$test_array_Marmaris=array("Marmaris_1","Marmaris_2","Marmaris_3");
$test_array_Icmeler=array("Icmeler_1","Icmeler_2","Icmeler_3");
$test_array_Bodrum=array("Bodrum_1","Bodrum_2","Bodrum_3");

//this defines a dynamic variable, selecting the proper array based on the location chosen
$x=$resort;
$y=$hotel;
$tempvar="$test_array_".$x;
$temphotel=$$tempvar;

?>
<form name="test_form">
<select onChange="popSelect(<?echo sizeof($$temphotel)?>)" name="resort">
<option><-select an element->
<?
foreach ($test_array_loc as $test_element) {
?>
<option <?if ($test_element==$resort)
{
echo "selected";?>
<?}?>value="<?echo $test_element?>"><?echo $test_element?>
<?
}
?>
</select>

<select name="hotel">
<option><-select an element->
<?
foreach ($$temphotel as $test_element) {
?>
<option <?if ($test_element==$y) {?>selected <?}?>value="<?echo $test_element?>"><?echo $test_element?>
<?
}
?>

I am sure I am wrong but I guess thats wh I am here 🙂