array conversion in php - php

Question

how would you convert this array:
Array
(
[0] => Array
(
[Contact] => Array
(
[number] => 0425 234 634
)
)
[1] => Array
(
[Contact] => Array
(
[number] => 2939 492 235
)
)
)
into this array
Array
(
[0] => 0425 234 634
[1] => 2939 492 235
)
?

Answer 1

See Set::extract() It uses xpath notation to extract node values from paths in arrays.
$numbers = Set::extract('/Contact/number', $numbers);
Achieve all this in 1 line in far more understandable code than other examples suggested here.

Answer 2

A very dirty method, don't think there is a function to do this for you though.
foreach($array1 as $key => $value) {
$array2[$key]=$value['contact']['number'];
}
EDIT:
Actually, array_values might be of some help, would be worth testing it against your multi-dimensional array.

Answer 3

Since you are using CakePHP, there is an included utility library that does just what you need.
$a = array(
0 => array(
'Contact' => array(
'number' => "0425 234 634"
)
),
1 => array(
'Contact' => array(
'number' => "2939 492 235"
)
)
);
$b = Set::classicExtract($a, '{n}.Contact.number');
print_r($b);
And the result is:
Array
(
[0] => 0425 234 634
[1] => 2939 492 235
)

Answer 4

I've only seen solutions using a seperate array to store the results, this would work just as fine:
<?php
foreach($numbers as $key => $number) {
$numbers[$key] = $number['Contact']['number'];
}
?>

Answer 5

Here you go, fully functional and without any assumptions about your original array :)
<?php
$array = array(
0 => array(
'Contact' => array(
'number' => 123123123
)
),
1 => array(
'Contact' => array(
'number' => 123123123
)
),
2 => array(
'Contact' => array(
'number' => 123123123
)
),
);
function flattenArray(array $arr, &$newArr) {
while($array = array_shift($arr)) {
if(is_array($array)) {
flattenArray($array, $newArr);
} else {
$newArr[] = $array;
}
}
}
$newArr = array();
foreach($array as $key => $value) {
flattenArray($value, $newArr);
}

Answer 6

class DeepCollect {
protected $arr = array();
public function collect($item, $key) {
$this->arr[] = $item;
}
public static function collect_all($array) {
$collect = new self;
array_walk_recursive($array, array($collect, "collect"));
return $collect->arr;
}
}
print_r(DeepCollect::collect_all($input_array));
Will work for any nested-array irrespective of key combinations.

Answer 7

This should work also with
Set:extract( "{n}.Contact.number", $a );
Set::extract( "/number", $a );