How can curl be utilized effectively in PHP to overcome SSL handshake failures and successfully establish secure connections?

When encountering SSL handshake failures in PHP when using cURL to establish secure connections, one way to overcome this issue is to set the appropriate cURL options to verify the SSL certificate and provide the necessary CA certificates. This can be achieved by setting the CURLOPT_SSL_VERIFYPEER and CURLOPT_CAINFO options in the cURL request. 

// Initialize cURL session
$ch = curl_init();

// Set the URL to connect to
curl_setopt($ch, CURLOPT_URL, 'https://example.com');

// Set cURL options to verify SSL certificate and provide CA certificates
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($ch, CURLOPT_CAINFO, '/path/to/ca-bundle.crt');

// Execute the cURL session
$response = curl_exec($ch);

// Check for errors
if(curl_errno($ch)){
    echo 'Curl error: ' . curl_error($ch);
}

// Close cURL session
curl_close($ch);

// Process the response
echo $response;

Keywords

curl PHP SSL handshake failures secure connections libraries

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