/**
 * Processes the global matching records to find the minimum and maximum prices.
 * v3c: Created
 * @return a 2-entry associative array containing 'minPrice' and 'maxPrice'.
 */
function GetResultsPriceRange() {
    // Bring in the global array containing current item matches
    global $gMatchingInfo;

    // Fallback defaults if the array is empty, null, or not yet initialized
    if (!is_array($gMatchingInfo) || empty($gMatchingInfo)) {
        return [
            'minPrice' => 0,
            'maxPrice' => 0
        ];
    }

    $minPrice = null;
    $maxPrice = null;

    foreach ($gMatchingInfo as $item) {
        // Look for common variations of the array keys ('minPrice' vs 'Min $')
        $rawMin = isset($item['minPrice']) ? $item['minPrice'] : (isset($item['Min $']) ? $item['Min $'] : null);
        $rawMax = isset($item['maxPrice']) ? $item['maxPrice'] : (isset($item['Max $']) ? $item['Max $'] : null);

        // Process Minimum Price Entry
        if ($rawMin !== null && trim($rawMin) !== '') {
            // Defensive sanitization: remove $, commas, and non-numeric fluff
            $cleanMin = (float) preg_replace('/[^\d.]/', '', $rawMin);
            
            if ($minPrice === null || $cleanMin < $minPrice) {
                $minPrice = $cleanMin;
            }
        }

        // Process Maximum Price Entry
        if ($rawMax !== null && trim($rawMax) !== '') {
            // Defensive sanitization: remove $, commas, and non-numeric fluff
            $cleanMax = (float) preg_replace('/[^\d.]/', '', $rawMax);
            
            if ($maxPrice === null || $cleanMax > $maxPrice) {
                $maxPrice = $cleanMax;
            }
        }
    }

    // Return the final 2-entry array (defaulting to 0 if no prices were found)
    return [
        'minPrice' => ($minPrice !== null) ? $minPrice : 0,
        'maxPrice' => ($maxPrice !== null) ? $maxPrice : 0
    ];
}