Recursive replace one array with specific key with another arrays - php

Question

I have an array where all arrays where key type == 'foo' must be replaced by a custom arrays.
Basically I need to find a specific array and then replace it with other arrays.
The issue here you can easily replace one array but when you insert numbers of arrays you are shifting keys so the next array type == 'foo' will not be replaced
Any help would be appreciated.
Here's what I have:
$array = array(
array(
'options' => array(
array(
'type' => 'foo'
),
array(
'type' => 'foo'
),
array(
'type' => 'bar'
)
)
),
array(
'options' => array(
array(
'type' => 'bar'
),
array(
'type' => 'bar'
),
array(
'type' => 'foo'
)
)
),
);
And I have an array which should replace any array where type == 'foo'
$array_foo = array(
array(
'type' => 'custom'
),
array(
'type' => 'custom_2'
),
array(
'type' => 'anything'
),
);
Here is the desired output:
$array = array(
array(
'options' => array(
array(
'type' => 'custom'
),
array(
'type' => 'custom_2'
),
array(
'type' => 'anything'
),
array(
'type' => 'custom'
),
array(
'type' => 'custom_2'
),
array(
'type' => 'anything'
),
array(
'type' => 'bar'
)
)
),
array(
'options' => array(
array(
'type' => 'bar'
),
array(
'type' => 'bar'
),
array(
'type' => 'custom'
),
array(
'type' => 'custom_2'
),
array(
'type' => 'anything'
),
)
),
);
Thank you.

Answer 1

Here's a way using 2 nested foreach loops and array_merge() with a temporary array:
// Pass the array by reference
foreach ($array as &$sub) {
// Temporary array
$new_options = [];
// Loop through options
foreach ($sub['options'] as $opt) {
// if type foo: replace by $array_foo items
if ($opt['type'] == 'foo') {
$new_options = array_merge($new_options, $array_foo);
// else, keep original item
} else {
$new_options[] = $opt;
}
}
// replace the options
$sub['options'] = $new_options;
}
And check the output:
echo '<pre>' . print_r($array, true) . '</pre>';
See also Passing by Reference

Answer 2

According to a previous post, the code for changing could be done in a similar fashion to the following code:
$base = array("orange", "banana", "apple", "raspberry");
$replacements = array(0 => "pineapple", 4 => "cherry");
$replacements2 = array(0 => "grape");
$basket = array_replace($base, $replacements, $replacements2);
print_r($basket);
So with your method instead of having numbers or indexes, I think you might be able to get away with writing down foo instead to get the replacement to work properly.
The other thing you might look into is array merge-recursive which can be found at: http://php.net/array_merge_recursive
The problem you stated here looks similar to this post: PHP Array Merge two Arrays on same key
I hope this helps you.