---
slug: "phpの-zend_http_client-で-tls12-接続する"
title: "Connecting with TLS1.2 using Zend_Http_Client in PHP"
description: "$client = new Zend_Http_Client($url);$response = $client->request('GET');\nI was doing it like this, but due to an issue with the OS, I couldn't connect using TLS 1.2."
url: "https://www.ytyng.com/en/blog/phpの-zend_http_client-で-tls12-接続する"
publish_date: "2017-12-21T09:39:24Z"
created: "2017-12-21T09:39:24Z"
updated: "2026-02-27T11:49:57.499Z"
categories: []
keywords: ""
featured_image_url: "https://media.ytyng.com/resize/20230812/06f8518376c74517bd98ed1473331544.png.webp?width=768"
has_video: false
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lang: "en"
---
# Connecting with TLS1.2 using Zend_Http_Client in PHP
$client = new Zend_Http_Client($url);
$response = $client->request('GET');
I was doing it like this, but due to an issue with the OS, I couldn't connect using TLS 1.2.
It worked well when I switched to using the CURL adapter.
$config = array(
'adapter' => 'Zend_Http_Client_Adapter_Curl',
'curloptions' => array(CURLOPT_SSLVERSION => 6),
);
$client = new Zend_Http_Client($url, $config);
* CURLOPT_SSLVERSION => 6 stands for TLS1.2. If it's 5, it means 1.1.
https://www.howsmyssl.com/a/check
This site is very useful for checking encryption protocols.
Use of undefined constant CURL_SSLVERSION_TLSv1_2 · Issue #26 · wepay/PHP-SDK
https://github.com/wepay/PHP-SDK/issues/26
This page was very helpful.