generateAzureBlobSaSToken.php

<?php
   
 // Function to create a shared access signature (SAS) token
    private function getSasToken($accountName, $accountKey, $containerName)
    {
        $sasExpiry = time() + 3600; // Token expires in 1 hour
        $sasResource = "https://$accountName.blob.core.windows.net/$containerName";
        $sasString = utf8_encode(urlencode($sasResource) . "\n$sasExpiry");
        $sig = base64_encode(hash_hmac('sha256', $sasString, base64_decode($accountKey), true));
        $sasToken = sprintf(
            'sv=2018-03-28&ss=b&srt=sco&sp=rwdlac&se=%s&st=2020-01-01T00:00:00Z&spr=https&sig=%s',
            urlencode($sasExpiry),
            urlencode($sig)
        );
        return $sasToken;
    }