how to reach into PHP nested arrays?

Question

I've a nested array whose print_r looks like this-

Array
(
    [keyId] => Array
        (
            [hostname] => 192.168.1.127
            [results] => Array
                (
                    [1] => false
                    [2] => false
                    [3] => false
                )

            [sessionIDs] => Array
                (
                    [0] => ed9f79e4-2640-4089-ba0e-79bec15cb25b
                )

        )

I would like to process(print key and value) of the "results" array. How do I do this?

I am trying to use array_keys function to first get all the keys and if key name is "results", process the array. But problem is array_keys is not reaching into the "results"

Ibrahim Azhar Armar · Accepted Answer · 2012-04-17 11:00:18Z

3

php's foreach loop is what you need.

foreach($arr['keyId']['results'] as $key => $value) {
   //$key contains key and $value contains values.
}

answered Apr 17, 2012 at 11:00

Ibrahim Azhar Armar

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Comments

Jack · Accepted Answer · 2012-04-17 11:01:33Z

2

The array you want is $array['keyID']['results']. From there you access the values with $array['keyID']['results'][1], $array['keyID']['results'][2], $array['keyID']['results'][3]

To loop through it just do this:

foreach($array['keyId']['results'] as $key => $value) {
   echo $key . ' ' . $value;
}

or

for ($i = 1; $i <= 3; i++)
{
    echo $i . ' ' . $array['keyID']['results'][i];
}

answered Apr 17, 2012 at 11:01

Jack

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Comments

Jon · Accepted Answer · 2012-04-17 10:58:30Z

1

foreach($array['keyId']['results'] as $k => $v) {
    // use $k and $v
}

answered Apr 17, 2012 at 10:58

community wiki

Jon

Comments

Starx · Accepted Answer · 2012-04-17 11:43:08Z

1

One way to navigate through the array is this.

//Assuming, your main array is $array
foreach($array as $value) { //iterate over each item

   if(isset($value['results']) && count($value['results'])) { 
   // ^ check if results is present

       //Now that we know results exists, lets use foreach loop again to get the values
       foreach($value['result'] as $k => $v) {
           //The boolean values are now accessible with $v
       }
   }
}

edited Apr 17, 2012 at 11:43

answered Apr 17, 2012 at 10:59

Starx

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14 Comments

Starx Over a year ago

What is wrong with SO, today? Downvotes are being fired on me. Without Comments.

Starx Over a year ago

@Jon, I meant SO users, I am afraid somebody hates me.

Jon Over a year ago

That's absurd. You should be more "afraid" that your answers need improvement: for example, this one is not practical at all and there is also no explanation at all. To me it looks like a bad idea and the OP may have difficult time adapting to other code on top of that.

Starx Over a year ago

@Jon, My answer has more explanation than yours does.

Jon Over a year ago

...which, along with the fact that we are talking about ultra beginner level PHP syntax, is why I made mine community wiki. It would have been a comment instead if I didn't need the space to format the code. In any case, it might serve you better to look into how your answers can be improved.

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