Retrieve Tag Value using PHP

ive read that we can retrieve tag snapshot value using php, using below code:

<?php
        $comObjPi = new COM('PISDK.PISDK');
        $server = $comObjPi->Servers->Item("your pi server ip or domain name");
        $server->Open();$point = $server->PIPoints("the pi tag");  // any tag.
        $point->Data->SnapShot()->Value."\n";
        $data1 = $point->Data->SnapShot()->Value."\n";
        $data1= number_format($data1, 0, '.', '');//fix the format
        echo ($data1);//display the data
                     
  ?>

is there a library that i can refer to, instead of just taking the snapshot, maybe taking the archive value?

a way that i can retrieve an archive value or maybe create a trend using php?