Replace IDs inside array with PHP - php

Question

I have an array like this:
Array
(
[1] => Array
(
[uris] => Array
(
[1] => /
[2] => /news/
[3] => /about/
[4] => /contact/
)
[templates] => Array
(
[1] => 1
[2] => 2
[3] => 3
[4] => 4
)
)
)
and I need to update all the IDs with a new set of values so the final output should be something like:
[uris] => Array
(
[100] => /
[101] => /news/
[102] => /about/
[103] => /contact/
)
[templates] => Array
(
[100] => 1
[101] => 2
[102] => 3
[103] => 4
)
I think I might need to use a regex pattern like '/(\[.*?\])/' but I'm not sure how to put it together to get the final updated output.
EDIT: I should mention that the IDs I'm updating to won't be in sequential order, they're coming from a database table of entries in a CMS. Entries are being duplicated so they'll have the same URIs but the second set with have a higher set of IDs than the original ones.
There won't be a rule for the second set of IDs. The only guarantee is that the second set will all be higher than the highest ID from the first set.
The CMS I'm working with allows me to duplicate entries for use on a second site. But the CMS also uses a third party module that creates a serialized array like I've posted above which matches URIs against templates. The module doesn't create a new serialized array of the new entry IDs when the entries get duplicated, so what's I'm trying to do manually.
I thought I could unserialize the array, update the string's old IDs with the corresponding IDs of the new entries, reserialize it, and then copy it back into the database.

Answer 1

Array (
[1] => /
[2] => /news/
[3] => /about/
[4] => /contact/
)
Given this kind of array, what you need to do to replace the keys is simply:
$array = array_combine(range(100, 100 + (count($array) - 1)), $array);
It generates keys [100, .., 103] and splices them into the array.

Answer 2

You might have to loop and then replace the keys :
foreach ($yourArray as $array) {
for ($i = 0; $i < count($array['uris']); $i++) {
$array['uris'][$i][$newkey] = $array['uris'][$i][$oldkey];
unset($array['uris'][$i][$oldkey]);
}
for ($i = 0; $i < count($array['templates']); $i++) {
$array['templates'][$i][$newkey] = $array['templates'][$i][$oldkey];
unset($array['templates'][$i][$oldkey]);
}
}

Answer 3

As per your question update; not too sure what you're trying to do, but I have two guesses.
arr2d_replace_id will take all the uris and increase key and also a new set of array with updated keys and it's value.
arr2d_replace_id2 will 1) flip array of templates - where I'm guessing the value represents the ID of route in uris and so flipped to preserve values; 2) increase key value on uris; 3) change flipped array's value according to the key based on uris; 4) flip the array back with the new set info and assign to result.
function arr2d_replace_id($arr, $inc) {
$result = array();
foreach ($arr['uris'] as $k=>$v) {
$result['uris'][intval($k) + $inc] = $v;
$result['templates'][intval($k) + $inc] = $arr['templates'][$k];
}
return $result;
}
function arr2d_replace_id2($arr, $inc) {
$result = array();
$tpl_flipped = array_flip($arr['templates']);
foreach ($arr['uris'] as $k=>$v) {
$result['uris'][intval($k) + $inc] = $v;
$tpl_flipped[$k] = intval($k) + $inc;
}
$result['templates'] = array_flip($tpl_flipped);
return $result;
}
$test = array(
'uris' => array(
1 => '/', '/news/', '/about/', '/contact/',
),
'templates' => array(
1 => 1, 2, 3, 4
)
);
print_r( $test );
print_r( arr2d_replace_id($test, 100) );
print_r( arr2d_replace_id2($test, 100) );
See in action: http://3v4l.org/T6hHD

Answer 4

If the array values are unique, you can use array_flip:
$array = [
1 => '/',
2 => '/contact/',
3 => '/about/'
];
$counter = 100;
$array = array_flip($array);
$array = array_map(function($oldKey) use (&$counter) {
return ++$counter;
}, $array);
$array = array_flip($array);

Answer 5

$mainArray = array();
$mainArray[]=array("uris" => array("/", '/news', '/about', '/contact') , "templates" => array(1,2,3,4));
foreach ($mainArray as &$array) {
$uris = $array['uris'];
$keys = array_keys($uris);
for($i=0;$i<count($keys);$i++)
{
$uris[$keys[$i] + 100]=$uris[$i];
unset($uris[$i]);
}
$template = $array['templates'];
$keys = array_keys($uris);
for($i=0;$i<count($keys);$i++)
{
$template[$keys[$i] + 100]=$template[$i];
unset($template[$i]);
}
$array['uris'] = $uris;
$array['templates'] = $template;
}
echo "<pre>";
print_r($mainArray);
exit;

Answer 6

Try this one,
$array = array(
array('uris' => array(
'1' => '/',
'2' => '/news/',
'3' => '/about/',
'4' => '/contact/'
),
'templates' => array
(
'1' => '1',
'2' => '2',
'3' => '3',
'4' => '4'
)
)
);
$val = 100;
$result = array();
foreach ($array as $key => $value) {
foreach ($value as $key1 => $value1) {
foreach ($value1 as $key2 => $value2) {
$result[$key][$key1][$val] = $value2;
$val++;
}
}
}
var_dump($result);