Accessing Information from a PHP Array

Question

Array ( [0] => id [1] => 4 )
Array ( [0] => first_name [1] => F_NAME )
Array ( [0] => last_name [1] => L_NAME )
Array ( [0] => email [1] => EMAIL )

Hey,

I'm wondering how I can create a variable named after the type of information stored that stores the actual information. For example, there are 4 pieces of data in the above array. I'd like to have:

$id = 4;
$first_name = 'F_NAME';
$last_name = 'L_NAME';
$email = 'EMAIL';

I know I can use a double $ to create a variable with the name of another variable but don't know how to access the data with this array structure. Any help is appreciated!

Thanks

Matthew · Accepted Answer · 2011-03-01 17:35:09Z

1

I think you're looking for this:

$a = array(
  array('id', '4'), array('first_name', 'F_NAME'), // ...
);

foreach ($a as $b)
{
  $$b[0] = $b[1];
}

But this is a very ugly thing to do, and I'd recommend rethinking the higher strategy a bit.

answered Mar 1, 2011 at 17:35

Matthew

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1 Comment

Matthew Over a year ago

See mailo's answer for a better way to store and access this kind of data (associated arrays).

mailo · Accepted Answer · 2011-03-01 17:42:31Z

0

You can use PHP extract,but only in case when id=>4 association is in array, not what you have now.

$var_array = array("color" => "blue",
                   "size"  => "medium",
                   "shape" => "sphere");
extract($var_array, EXTR_PREFIX_SAME, "wddx");

echo "$color, $size, $shape, $wddx_size\n";

But I think that proper approach would be to modify a little your array and use it like: $data['first_name'], though - interesting question.

edited Mar 1, 2011 at 17:42

answered Mar 1, 2011 at 17:35

mailo

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1 Comment

mailo Over a year ago

That's true, but he could iterate over array to make it 1-D for extract(), anyways I provided a better solution suggestion.

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