Cannot verify webhook for php 5.4

[salmanhaidar]

Hi, I have created a Webhook For Order Create to get Data on my server. Webhook request going to my local server. But webhook verification faild. i am using this code to verify webhook But its goes to else part.

public function webhookCreateOrder(Request $request){

    //define('SHOPIFY_APP_SECRET', 'my_shared_secret');
    $hmac_header = $_SERVER['HTTP_X_SHOPIFY_HMAC_SHA256'];
    $data = file_get_contents('php://input');
    //$verified = $this->verify_webhook($data, $hmac_header);
    $calculated_hmac = base64_encode(hash_hmac('sha256', $data, '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', true));
    $verified = hash_equals($hmac_header, $calculated_hmac);
    //error_log('Webhook verified: '.var_export($verified, true)); # Check error.log to see the result
    if ($verified) {

        $jsonData = json_encode($data);

        DB::table('test007')->insert([
            'detail' => 'verified'
        ]);

        http_response_code(200);
    } else {

        DB::table('test007')->insert([
            'detail' => $hmac_header. ' verification equall to '. $calculated_hmac,
        ]);
        http_response_code(401);
    }

}