PHP multidimensional array handling - looking up a value 2 arrays deep

Question

I'm having a bit of trouble accessing data within an array that looks like the following:

array ( 
    0 => array ( 'value' => '46', 'label' => 'Brand A', ), 
    1 => array ( 'value' => '45', 'label' => 'Brand B', ), 
    2 => array ( 'value' => '570', 'label' => 'Brand C', ), 
);

Essentially I want to be able to return the contents of the label when given the value (e.g. 45 returns Brand B), but am not sure how to do this within these levels.

Do I need to break this array down into smaller chunks through a loop of some sort to access this data?

Thanks

Whathaveyoutried.com? I'll give you a hint. Foreach loop, google multidimensional array search, in_array, array_search etc. — iiro
– iiro, Commented Feb 22, 2013 at 6:00
Your real problem is that you aren't using those labels as keys instead. — Nick Pickering
– Nick Pickering, Commented Feb 22, 2013 at 6:18

Emery King · Accepted Answer · 2013-02-22 06:01:25Z

1

When creating the array you need to use the value as the key:

array(
    '46' => 'Brand A',
    '45' => 'Brand B',
);

OR

$arrayVar['46'] = 'Brand A';

etc.

If you aren't the one creating the array, then you can foreach loop through it and rework it into a different structure.

answered Feb 22, 2013 at 6:01

Emery King

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2 Comments

Nick Pickering Over a year ago

I would've gone with using the label as the key instead of the value, but the point is made - the original array doesn't need to be multidimensional.

fvzzy Over a year ago

I agree, however it's being output that way from the API call. I probably should have asked how it was best to restructure the array to remove the unnecessary dimension - thanks though.

Prasanth Bendra · Accepted Answer · 2013-02-22 06:12:20Z

0

<?php
$arr = array ( 
    0 => array ( 'value' => '46', 'label' => 'Brand A', ), 
    1 => array ( 'value' => '45', 'label' => 'Brand B', ), 
    2 => array ( 'value' => '570', 'label' => 'Brand C', ), 
);

$val = 45; // search for 45

foreach($arr as $vals){
   if($vals['value'] == $val){
      echo "value=".$vals['value'];
      echo "<br>";
      echo "label=".$vals['label'];
   }
}
?>

answered Feb 22, 2013 at 6:12

Prasanth Bendra

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Comments

Nirmal Ram · Accepted Answer · 2013-02-22 06:06:55Z

0

Try this

<?php
$arr = array ( 
    0 => array ( 'value' => '46', 'label' => 'Brand A', ), 
    1 => array ( 'value' => '45', 'label' => 'Brand B', ), 
    2 => array ( 'value' => '570', 'label' => 'Brand C', ), 
);

foreach($arr as $ele){
echo "value=".$ele['value']." and label=".$ele['label'];
}
?>

answered Feb 22, 2013 at 6:06

Nirmal Ram

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