Answers for "convert multidimensional array to single array laravel"

convert multidimensional array to single array php

$singleArray = []; 
foreach ($parentArray as $childArray) 
{ 
    foreach ($childArray as $value) 
    { 
    $singleArray[] = $value; 
    } 
}

laravel return a single dimensional array

$catcount    = 2;
    $parents_ids = [];
    for ($i = 0; $i < $catcount; $i++) {
        $parents_ids[] = $userCategory[$i];
    }
    $subCats = Category::whereIn('parent_id', $parents_ids)->pluck('id');