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PHP ssl_set() function (with example)

Hey fellow developers,

I have been working on a PHP project that requires secure communication over the network. I stumbled upon the `ssl_set()` function in PHP which seems like it could solve my problem, but I'm not entirely sure how to use it correctly.

From what I understand, the `ssl_set()` function is used to set various SSL options for a stream. However, I'm unsure about the exact syntax and the available options that can be passed to this function. Could someone please provide me with an example code snippet that demonstrates the usage of `ssl_set()`? It would be really helpful if you could also explain the purpose of the options used in the example.

Thanks in advance for your guidance!

All Replies


Hey everyone,

I encountered this question while browsing, and I thought I'd pitch in with my personal experience using the `ssl_set()` function in PHP.

When I was working on a project that involved secure communication between a PHP app and a remote server, I had to deal with SSL options, and `ssl_set()` came to the rescue. It allowed me to customize the SSL configuration and establish secure connections.

Here's a code snippet that illustrates how I used `ssl_set()`:

$stream = stream_socket_client('ssl://example.com:443', $errno, $errstr, 30, STREAM_CLIENT_CONNECT,
stream_context_create(['ssl' =>
'verify_peer' => true,
'verify_peer_name' => true,
'cafile' => '/path/to/cacert.pem',

if (!$stream) {
die("Failed to connect securely: $errno - $errstr");

// Now $stream is ready for secure communication

In this case, I'm using `stream_socket_client()` to establish an SSL-encrypted connection with the remote server `example.com` on port `443`. I pass the SSL options array as the second argument to `stream_context_create()`, within which I set `'verify_peer'`, `'verify_peer_name'`, and `'cafile'` options.

To briefly clarify the options used here:
- `verify_peer` validates the remote server's certificate. If set to `true`, the stream will only connect if the certificate is valid.
- `verify_peer_name` ensures that the remote server's name matches the one provided in the certificate.
- `cafile` specifies the path to the CA bundle file containing trusted certificate authorities.

By providing these options, I can establish a secure connection and perform secure communication with the remote server while ensuring the authenticity and integrity of the certificate.

Remember to adjust the SSL options according to your specific needs and the server's SSL configuration. Additionally, it's essential to keep your CA bundle updated to validate against trusted authorities effectively.

I hope this adds another perspective to the usage of `ssl_set()` and assists you in implementing secure connections successfully. Feel free to ask if you have any further questions!


Hey all,

I stumbled upon this discussion and wanted to share my personal experience with using the `ssl_set()` function in PHP. It's been quite a journey!

When I was building a PHP application that required secure communication, I realized `ssl_set()` was my ticket to establishing a secure connection using SSL/TLS.

Let me give you a practical example that showcases how I employed `ssl_set()`:

$context = stream_context_create();
$options = [
'ssl' => [
'verify_peer' => false,
'verify_peer_name' => false,
'allow_self_signed' => true,
ssl_set($context, $options);

// Now, utilize $context to interact with the stream

In the provided code snippet, we begin by creating a stream context using `stream_context_create()`. Then, we define an array of SSL options within the `'ssl'` key.

Now, let's dissect a few of the options used in this example:
- `verify_peer` allows you to specify whether the certificate presented by the server needs to be verified. By setting it to `false`, you eliminate the need for verification.
- `verify_peer_name` enables or disables verification of the server's name mentioned in the certificate. In this case, it's set to `false`, bypassing this verification.
- `allow_self_signed` determines whether self-signed certificates should be accepted. By setting it to `true`, we're opting to accept self-signed certificates.

It's important to note that, depending on your specific needs and the security requirements of your project, you might want to adjust these options accordingly. Always exercise caution when disabling verification or accepting self-signed certificates, as doing so may compromise the authenticity and security of your communications.

I hope sharing my experience gives you some insight into how to apply `ssl_set()` effectively. If you have any further questions or need more assistance, feel free to ask. Happy coding!


Hey there,

I've had some experience using the `ssl_set()` function in PHP, so I thought I'd chime in and share what I've learned.

The `ssl_set()` function is indeed useful for setting SSL options on a stream. One common application of this function is when you want to establish a secure connection between your PHP application and another server using SSL/TLS.

Here's a basic example that demonstrates the usage of `ssl_set()`:

$context = stream_context_create();
$options = [
'ssl' => [
'verify_peer' => true,
'verify_peer_name' => true,
'allow_self_signed' => false,
'cafile' => '/path/to/certificate_authority.pem',
'verify_depth' => 5,
// Add more options as per your requirements
ssl_set($context, $options);

// Now you can use $context with other functions like stream_socket_client()

In this example, we create a stream context using `stream_context_create()`, which returns a stream context resource. Then, we define an array of SSL options under the `'ssl'` key.

Regarding the options used in the example:
- `verify_peer` enables or disables the verification of the server's certificate.
- `verify_peer_name` enables or disables verification of the server's name in the certificate.
- `allow_self_signed` determines whether self-signed certificates are accepted.
- `cafile` specifies the path to the Certificate Authority (CA) file for verification.
- `verify_depth` sets the maximum length of the certificate chain.

You can add more options to the `'ssl'` array based on your specific needs. For example, you might want to set the `'ciphers'` option to specify the allowed SSL/TLS ciphers.

Remember, the available options and their usage can depend on your PHP version and the underlying OpenSSL library.

I hope this helps you get started with using `ssl_set()`! Feel free to ask if you have further questions.

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