How to Resolve the \'Unable to Find Socket Transport \'ssl\' Not Enabled\' Error When Configuring PHP on IIS

Resolving "Socket transport "ssl" in PHP not enabled" Error on IIS

When attempting to enable the SSL socket transport in PHP on IIS, you may encounter the error: "Unable to find the socket transport 'ssl' - did you forget to enable it when you configured PHP?" Despite extensive troubleshooting, including configuring extensions and DLLs, you remain unresolved.

To address this issue, consider the following specific steps:

In php.ini File:

1. Locate the "extension_dir=" parameter and uncomment it.
2. Uncomment the "extension=php_openssl.dll" line.

PHP Installation:

1. Ensure that the PHP configuration has the "ssl" transport enabled.
2. Verify that the OpenSSL libraries (libeay32.dll and ssleay32.dll) are present in the PHP folder, the Windows directory, and the Windows/system32 directory.
3. Grant proper file permissions to the necessary PHP files and DLLs.
4. Add the PHP installation path to the Windows PATH environment variable.

Server Configuration:

1. Restart IIS after each configuration change.
2. Confirm that SSL is enabled on the server, specifically for port 443.

Troubleshooting Steps:

1. Test the OpenSSL connection using the following PHP script:

<?php
$hostname = 'www.my.site.com';
$port = 443;

$ssl_socket = @fsockopen("ssl://{$hostname}", $port, $errno, $errstr, 10);

if (!$ssl_socket) {
  echo "SSL connection failed: [{$errno}] $errstr\n";
} else {
  echo "SSL connection successful.\n";
}

2. Check the PHP logs for errors related to OpenSSL.
3. Disable additional extensions or modules that may be interfering with SSL functionality.

By following these detailed steps, you should be able to successfully enable the "ssl" socket transport in PHP on your IIS server and resolve the "Socket transport "ssl" in PHP not enabled" error.

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