Ved parser to decode ved paramaters in google search result urls to find type of google result.

VedParser.php

<?php

/**
 * @author : Meraj Ahmad Siddiqui <[email protected]>
 * @package: Ved Parser
 * @description : This parser parse the ved parameter of the url form google to  know its type
 */

function decodeVedParameter($vedParameter) {
    $knownVedParams = [
        'i' => 1,
        't' => 2,
        'r' => 6,
        's' => 7
    ];
    $decodeVedResult = [];
    /**
     * Handling Plain Ved
     */
    if(substr($vedParameter,0,1) == 1) {
        preg_match_all('/([a-z]+):([0-9]+)/i', $vedParameter, $matches, PREG_SET_ORDER);
        foreach($matches as $match) {
            $targetKey = isset($knownVedParams[$match[1]]) ?: $match[1];
            $decodeVedResult[$targetKey] = (int) $match[2];
        }
        return $decodeVedResult;
    }
    /**
     * handling base64 encoded Ved
     */
    $pregPattern ='/([\x80-\xff]*[\0-\x7f])([\x80-\xff]*[\0-\x7f])/';
    $decodedVed = base64_decode(str_replace(['_','-'], ['+','/'], substr($vedParameter,1)));
    preg_match_all($pregPattern,$decodedVed,$matches, PREG_SET_ORDER);
    foreach($matches as $match){
        $targetKey = $targetValue = 0;
        foreach(str_split($match[1]) as $index => $character){
            $targetKey += (ord($character) & 0x7f) << $index * 7;
        }
        foreach(str_split($match[1]) as $index => $character){
            $targetValue += (ord($character) & 0x7f) << $index * 7;
        }
        $decodeVedResult[$targetKey >> 3] = $targetValue;
    }
    return $decodeVedResult;
}