PHP multidimensional array search by value using another value - php

Question

I need to get the the distinct 'uid' and its corresponding 'name' , how can I do this in a multidimensional array?
$userdb = array(
array(
'uid' => '100',
'name' => 'Sandra Shush',
'pic_square' => 'urlof100'
),
array(
'uid' => '5465',
'name' => 'Stefanie Mcmohn',
'pic_square' => 'urlof100'
),
array(
'uid' => '5465',
'name' => 'Jane Doe',
'pic_square' => 'urlof100'
),
array(
'uid' => '40489',
'name' => 'Michael',
'pic_square' => 'urlof40489'
),
array(
'uid' => '40489',
'name' => 'Jane Doe',
'pic_square' => 'urlof40489'
));
sample output:
$data = [{uid: '100', name: 'Sandra Shush'},{uid: '5465', name: ['Stefanie Mcmohn','Jane Doe']}, {uid: '40489', name: ['Michael','Jane Doe']}]
tried working with array_columns and array_keys but i cant think of the right way to get this.

Answer 1

Try Something like this , here i am storing uid to an array and checking is it already available in the array with in_array function
<?php
$userdb = array(
array(
'uid' => '100',
'name' => 'Sandra Shush',
'pic_square' => 'urlof100'
),
array(
'uid' => '5465',
'name' => 'Stefanie Mcmohn',
'pic_square' => 'urlof100'
),
array(
'uid' => '40489',
'name' => 'Michael',
'pic_square' => 'urlof40489'
),
array(
'uid' => '40489',
'name' => 'Jane Doe',
'pic_square' => 'urlof40489'
));
$newUserDb = array();
$arrayUserId=array();
foreach ($userdb as $user) {
$newUserDbSingle=array();
$nameArray=array();
if (in_array($user['uid'], $arrayUserId))
{
$key = array_search ($user['uid'], $arrayUserId);
$nameArray=$newUserDb[$key]['name'];
array_push($newUserDb[$key]['name'], $user['name']);
}
else
{
unset($user['pic_square']);
$arrayUserId[]=$user['uid'];
$newUserDbSingle=$user;
$newUserDbSingle['name']=array($user['name']);
$newUserDb[]=$newUserDbSingle;
}
}
print_r($newUserDb);
?>

Answer 2

Try this solution:
$data = [];
foreach($userdb as $user)
{
if(array_key_exists($user['uid'], $data))
{
array_push($obj->name, $user['name']);
}
else
{
$obj = new stdClass;
$obj->uid = $user['uid'];
$obj->name = [];
array_push($obj->name, $user['name']);
$data[$user['uid']] = $obj;
}
}
print_r($data);

Answer 3

I have this function that does very close to what yo need, just modify the return as per your request. Good luck
function array_searchRecursive($needle, $haystack, $strict = false, $path = array()) {
if (!is_array($haystack)) {
return false;
}
foreach ($haystack as $key => $val) {
if (is_array($val) && $subPath = array_searchRecursive($needle, $val, $strict, $path)) {
$path = array_merge($path, array($key), $subPath);
return $path;
} elseif ((!$strict && $val == $needle) || ($strict && $val === $needle)) {
$path[] = $key;
return $path;
}
}
return false;
}

Answer 4

You can try the following approach:
$userdb = array(
array(
'uid' => '100',
'name' => 'Sandra Shush',
'pic_square' => 'urlof100'
),
array(
'uid' => '5465',
'name' => 'Stefanie Mcmohn',
'pic_square' => 'urlof100'
),
array(
'uid' => '40489',
'name' => 'Michael',
'pic_square' => 'urlof40489'
),
array(
'uid' => '40489',
'name' => 'Jane Doe',
'pic_square' => 'urlof40489'
));
$nameArray = [];
$myUuid = '40489';
foreach ($userdb as $user) {
if ($myUuid == $user['uid']) {
array_push($nameArray, $user['name']);
}
}
print_r($nameArray);
and moreover, you can get any parameter or anything you required from the above array from that foreach loop.