PHP Question
Trying to get values of associative array in PHP
I'm have really lame question about PHP arrays, I'm trying to get all values of form[extras][], in this case they are 1,2,3,4, here is the output of print_r($array):
Array
(
[0] => Array
(
[name] => form[pickupDate][day]
[value] => 1
)
[1] => Array
(
[name] => form[pickupDate][month]
[value] => 10
)
[2] => Array
(
[name] => form[pickupTime][hour]
[value] => 0
)
[3] => Array
(
[name] => form[returnDate][day]
[value] => 1
)
[4] => Array
(
[name] => form[returnDate][month]
[value] => 1
)
[5] => Array
(
[name] => form[returnTime][hour]
[value] => 0
)
[6] => Array
(
[name] => form[car]
[value] => 1
)
[7] => Array
(
[name] => form[pickupAddress]
[value] =>
)
[8] => Array
(
[name] => form[agency]
[value] => 1
)
[9] => Array
(
[name] => form[extras][]
[value] => 1
)
[10] => Array
(
[name] => form[extras][]
[value] => 2
)
[11] => Array
(
[name] => form[extras][]
[value] => 3
)
[12] => Array
(
[name] => form[extras][]
[value] => 4
)
[13] => Array
(
[name] => form[specialPrice]
[value] =>
)
)
You can play with my data, by using this JSON string after converting it to PHP array like this:
$request = '[{"name":"form[pickupDate][day]","value":"1"},{"name":"form[pickupDate][month]","value":"8"},{"name":"form[pickupTime][hour]","value":"0"},{"name":"form[returnDate][day]","value":"1"},{"name":"form[returnDate][month]","value":"1"},{"name":"form[returnTime][hour]","value":"0"},{"name":"form[pickupAddress]","value":""},{"name":"form[agency]","value":"1"},{"name":"form[extras][]","value":"1"},{"name":"form[extras][]","value":"2"},{"name":"form[extras][]","value":"3"},{"name":"form[extras][]","value":"4"},{"name":"form[specialPrice]","value":""}]';
$array = json_decode($request,true);
I already tried with this, but it's resulting string(1) "4":
$result = array_column($array, null, 'name')['form[extras][]']['value'];
var_dump($result);
Answer
You have a multidimensional array, this is an array composed by several arrays.
array->[0]-[1]-[2]... | | | [name]-[value] | array-> [name]-[value]
That's why you have to go through each element, for instance with this function (you have one already defined in PHP > 5.5.0):
function array_column($array, $value)
{
$result = array();
foreach($array as $element)
{
$result[] = $element[$value];
}
return $result[];
}
Edit: for getting the values of a subset of specific arrays based upon their name:
function getValuesOfTheArraysForExtras($array)
{
$result = array();
foreach($array as $element)
{
if($element['name']=='form[extras][]')
$result[] = $element['value'];
}
return $result;
}
Source (Stackoverflow)