Question

I am trying to check if I have the $subCat value in the array then don’t add it. I should end up with one of each $subCat but when I dump $details I am still getting the full array. Why is this?

foreach ($detailsFunction as $main) 
{
        $mainlisting = $main['listingId'];
        $mainCat     = strtolower($main['mainCat']);
        $subCatO     = strtolower($main['subCat']);
        $subCat      = str_replace(" ", "-", $subCatO);

        if(isset($subCat) && $subCat == $subCat)
        {

          $details[] = array('url'     => base_url().'listings/'.$mainCat.'/'.$subCat,
                         'mainCat' => $main['mainCat'],
                         'subCat'  => $main['subCat']   
                        );
        }
}

Answer 1

Are you concerned with keeping the keys of $details numeric? If not You could add each item with $subCat as its key, and check if the key exists before adding it:

foreach ($detailsFunction as $main) 
{
        $mainlisting = $main['listingId'];
        $mainCat     = strtolower($main['mainCat']);
        $subCatO     = strtolower($main['subCat']);
        $subCat      = str_replace(" ", "-", $subCatO);

        if(!array_key_exists($subCat, $details))
        {

          $details[$subCat] = array('url'     => base_url().'listings/'.$mainCat.'/'.$subCat,
                         'mainCat' => $main['mainCat'],
                         'subCat'  => $main['subCat']   
                        );
        }
}