Searching for a value inside an array and getting the array - php

Question

I am trying to use an array to search for a value that is inside of an array and then take the full array that the value is in and add it to an array. Below is the array to get the value from:
Array (
[0] => Array ( [ID] => 138 [dimmer] => 5 [order] => 1 [double] => 0 [location1] => DSR [location2] => Stage Pockets )
[1] => Array ( [ID] => 139 [dimmer] => 6 [order] => 1 [double] => 0 [location1] => DSR [location2] => Stage Pockets )
[2] => Array ( [ID] => 140 [dimmer] => 7 [order] => 2 [double] => 0 [location1] => DSR [location2] => Stage Pockets )
[3] => Array ( [ID] => 141 [dimmer] => 8 [order] => 2 [double] => 0 [location1] => DSR [location2] => Stage Pockets )
)
I am trying to get the value of dimmer with the search function below:
function search($array, $key, $value)
{
$results = array();
if (is_array($array))
{
if (isset($array[$key]) && $array[$key] == $value)
$results[] = $array;
foreach ($array as $subarray)
$results = array_merge($results, search($subarray, $key, $value));
}
return $results;
}
Below it uses the $chan value which is an integer to use the function above to search an array. The foreach is then supposed to go through the array that is $patch and select the arrays out of the array above (only returns an empty array), although it doesn't do that unless you change $patch_single['dimmer'] with a string such as "7".
$patch = search($patch, 'Channel', $chan);
foreach ($patch as $patch_single) {
print_r($patch_single);
$dim_single = intval($patch_single['dimmer']);
echo $dim_single;
$dimmers = search($dimmers, 'dimmer', $dim_single);
}
The array that is being used to get $patch_single['dimmer'] is, when inside the foreach:
Array ( [ID] => 241 [Channel] => 100 [dimmer] => 7 )
Array ( [ID] => 242 [Channel] => 100 [dimmer] => 25 )
Thank you for your advice.

Answer 1

Hm, i see that you have 2 dimensional array. Why you just don't use this?
foreach($array as $row) {
if ($row['dimmer'] == $myValue) { $newArray[] = $row; }
}

Answer 2

Try this :
$arr = Array (Array ( "ID" => 138, "dimmer" => 5, "order" => 1, "double" => 0, "location1" => "DSR", "location2" => "Stage Pockets" ),
Array ( "ID" => 139, "dimmer" => 6, "order" => 1, "double" => 0, "location1" => "DSR", "location2" => "Stage Pockets" ),
Array ( "ID" => 140, "dimmer" => 7, "order" => 2, "double" => 0, "location1" => "DSR", "location2" => "Stage Pockets" ),
Array ( "ID" => 141, "dimmer" => 8, "order" => 2, "double" => 0, "location1" => "DSR", "location2" => "Stage Pockets" ));
$arr = array_filter($arr, function($ar) {
return ($ar['dimmer'] == '7' );
});
echo "<pre>";
print_r($arr);
Output :
Array
(
[2] => Array
(
[ID] => 140
[dimmer] => 7
[order] => 2
[double] => 0
[location1] => DSR
[location2] => Stage Pockets
)
)
ref: http://php.net/manual/en/function.array-filter.php