Arrays in a for loop?

[lurtnowski]

I have

Array
(
    [0] => Array
        (
            [power_supply_id] => 1
            [power_strip_id] => 1
            [receptacle_id] => 
            [outlett_placement] => 7
            [circuit_breaker_id] => 
            [power_panel_id] => 
            [pdu_id] => 
        )

)

and am using this

for ($x = 1; $x <= 2; $x++) {
  if(sizeof($power_supplies) >= 1) {
	foreach($power_supplies AS $power_supply) {
...
...
....
       }
  }
}

Each device can have 2 power supplies, but only 1 is present (the array)… how do I alter the foreach loop so I can target the one in the array?
I tried

foreach($power_supplies[$x - 1] AS $power_supply) 

to no avail.

[mabismad]

The apparent answer, in the form of a question (Jeopardy theme can be heard playing), why are you using a foreach(){} loop at all? What result are you trying to produce if there’s only one PS and what result are you trying to produce if there’s two?

Edit: Let me add another question. You are looping for x = 1, to 2. Does that specifically matter? Would 0 to 1 work?

[lurtnowski]

ok, heres the sitchuation
I have

You see how you can have 2 power trails (blue) but I only have 1 currently.
I want to only list the one (by having the image of a power strip) and still be able to add a power strip below
the top trail has a power strip, while the other doesnt…
yep, i have to be prepared if there are 4 power trails

//number to use for iteration
$row['total_plugs']

[mabismad]

While you didn’t actually answer the question, maybe this is the solution -

// loop over the number of 'elements' to display
foreach(range(1,$row['total_plugs']) as $x)
{
	// test if there's data for the current $x value
	if(isset($power_supplies[$x-1]))
	{
		// do whatever you want with the sub-array of data in $power_supplies[$x-1]
	}
}

[lurtnowski]

dang, I have to learn to think like that

[mabismad]

The theme there is you are looping to produce some number of display elements. As you are doing that, you test if there’s data corresponding to each element.