- strtolower: documentation ( source)
<?php
$listing = new stdClass;
$listing->name = 'Test Location';
$results = [ 0 => [ 'address' => '123 Testing', 'name' => 'Test Location' ] ];
foreach($results AS $result)
{
if( strtolower($listing->name) === strtolower($result['name']) )
{
}
}