How to Resolve \"Failed to enable crypto\" Error for HTTPS Requests in PHP?

Failed "file_get_contents()": Resolving "Failed to enable crypto" for HTTPS Requests

Problem:

When attempting to fetch an HTTPS webpage using file_get_contents(), some users encounter the error "Failed to enable crypto." This issue particularly affects the URL "https://eresearch.fidelity.com/eresearch/evaluate/fundamentals/earnings.jhtml?stockspage=earnings&symbols=AAPL&showPriceLine=yes."

Cause:

The error stems from the use of SSLv3 by the affected website. The openssl module in PHP has known compatibility issues with older SSL versions.

Resolution:

To resolve the issue, modify the file_get_contents() code to utilize the cURL extension, which allows for specifying the SSL version. The following code snippet demonstrates this solution:

<code class="php">function getSSLPage($url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_SSLVERSION,3); 
    $result = curl_exec($ch);
    curl_close($ch);
    return $result;
}

var_dump(getSSLPage("https://eresearch.fidelity.com/eresearch/evaluate/analystsOpinionsReport.jhtml?symbols=api"));</code>

Alternative Resolution for Windows Users:

On Windows systems, there may be an additional challenge due to lack of access to root certificates. To resolve this:

1. Download the root certificates from http://curl.haxx.se/docs/caextract.html.
2. Specify the path to the downloaded "cacert.pem" file using the following cURL options:

<code class="php">curl_setopt($ch, CURLOPT_CAINFO, __DIR__ . "/certs/cacert.pem");
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);</code>

Note: Make sure to enable SSL verification (CURLOPT_SSL_VERIFYPEER) or you will encounter errors.

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