Difficulty using associative array outside of for loop

Question

In a nutshell, I'm having problems printing an assoc array outside of a loop in PHP. I'm essentially looping over an array of campaign IDs which are substituted into the URL of a curl request (this is to retrieve an array of JSON from the server). I'm then using regex to retrieve the "base_bid" from this JSON. Ideally, I need to output a two-dimensional assoc array with ['id'] and ['base_bid'] keys like this:

Array ( [0] => Array ( [id] => 12311 [base_bid] => 0.8 ) [1] => Array ( [id] => 12322 [base_bid] => 0.4 ) )

The problem is that I can't access the complete assoc array outside of the loop as the values overlap meaning I get this output:

Array ( [id] => 11710821 [base_bid] => 3.8416 )

Here is my loop design:

for ($i=0; $i < count($campaigns); $i++) {
  $ch = curl_init('https://api.appnexus.com/campaign?id='.$campaigns[$i].'');
  $options = array(CURLOPT_CUSTOMREQUEST => 'GET',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_SSL_VERIFYPEER => false,
    CURLOPT_HTTPHEADER => array(
      'Content-Type: application/json',
      'Authorization:'.$token[1].''));
  curl_setopt_array($ch, $options);
  $base = curl_exec($ch);
  curl_close($ch);

  preg_match('/"base_bid":([0-9\.]+)/', $base ,$bid);
  $test['id'] = $campaigns[$i];
  $test['base_bid'] = $bid[1];
};

echo print_r($test);

Does anybody know how I would be able to retrieve a two-dimensional array of IDs and base_bids in its entirety outside of my loop?

Any comments would be greatly appreciated!

Thanks,

Sam

why you reject my editing

Muhammad Arif
– Muhammad Arif

2016-04-11 07:38:56 +00:00
Commented Apr 11, 2016 at 7:38 — Muhammad Arif
– Muhammad Arif, Commented Apr 11, 2016 at 7:38

iainn · Accepted Answer · 2016-04-08 12:40:44Z

2

You need to append to the $test array instead of overwriting the elements in it, e.g.

$test[] = array(
    'id' => $campaigns[$i],
    'base_bid' => $bid[1],
);

The [] operator adds a new element to the $test array each time, which should give you the structure you want.

answered Apr 8, 2016 at 12:40

iainn

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1 Comment

Sam Comber Over a year ago

Thanks for helping me understand this iainn, I can use the array outside of my loop now!

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