Testing OpenSSL with file_get_contents()

PKI Tutorials - Herong's Tutorial Examples

∟PHP Scripts Communicating with HTTPS Servers

∟Testing OpenSSL with file_get_contents()

This section provides a tutorial example on how to test the PHP OpenSSL module with the file_get_contents() function to run a GET request on an HTTPS server.

The fast way to test the OpenSSL module is to use the file_get_contents() function as shown in the test script, OpenSSL_HTTPS_file_get_contents.php:

<?php
# OpenSSL_HTTPS_file_get_contents.php
#- Copyright (c) 2010-2018 HerongYang.com. All Rights Reserved.
#
$script = array_shift($argv);
$url = array_shift($argv);

$html = file_get_contents($url);
echo $html;
?>

Now let's run this script to connect the yahoo login HTTPS server, which we have used in previous tutorials with Internet Explorer and Firefox Web browsers.

herong> \local\php\php OpenSSL_HTTPS_file_get_contents.php \
   https://login.yahoo.com

<!DOCTYPE html>
<html class="no-js">
<head>
    <title>Yahoo login</title>
    <meta http-equav="Content-Type" content="text/html;charset=utf-8">
    <meta name="referrer" content="origin">
...

The test script is working! The OpenSSL module quietly helped the file_get_contents() function and performed a GET request to the HTTPS server.

Table of Contents

About This Book

Introduction of PKI (Public Key Infrastructure)

Introduction of HTTPS (Hypertext Transfer Protocol Secure)

Using HTTPS with Google Chrome

Using HTTPS with Mozilla Firefox

HTTPS with Microsoft Edge

Using HTTPS with Apple Safari

HTTPS with IE (Internet Explorer)

Android and Server Certificate

iPhone and Server Certificate

Windows Certificate Stores and Console

RDP (Remote Desktop Protocol) and Server Certificate

macOS Certificate Stores and Keychain Access

Perl Scripts Communicating with HTTPS Servers

►PHP Scripts Communicating with HTTPS Servers

Configuring PHP OpenSSL on Windows

►Testing OpenSSL with file_get_contents()

OpenSSL Configuration Errors

SSL Context Options for OpenSSL

Asking OpenSSL to Verify Server's Certificate

OpenSSL Failing to Verify Server's Certificate

Multiple CA Certificates in a Single File

Testing OpenSSL with fopen()

Testing OpenSSL with fsockopen()

Adding CA Certificates for the PHP Engine

Testing OpenSSL with stream_socket_client()

Java Programs Communicating with HTTPS Servers

.NET Programs Communicating with HTTPS Servers

CAcert.org - Root CA Offering Free Certificates

PKI CA Administration - Issuing Certificates

Comodo Free Personal Certificate

Digital Signature - Microsoft Word

Digital Signature - OpenOffice.org 3

S/MIME and Email Security

PKI (Public Key Infrastructure) Terminology

Archived Tutorials

Full Version in PDF/EPUB