How to Troubleshoot False Returns from curl_exec()?

Why Does curl_exec() Consistently Return False?

When encountering the issue where curl_exec() continuously returns false, it's crucial to incorporate error handling into your code. By employing curl_error() and curl_errno(), you can delve into the details behind the failure.

To illustrate this concept, consider the following enhanced code snippet:

<code class="php">try {
    $ch = curl_init();

    // Validate initialization
    if ($ch === false) {
        throw new Exception('Initialization failed.');
    }

    // Set URL explicitly
    curl_setopt($ch, CURLOPT_URL, 'http://example.com/');

    // Enable return transfer
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    // Customize other options

    $content = curl_exec($ch);

    // Check curl_exec() return status
    if ($content === false) {
        throw new Exception(curl_error($ch), curl_errno($ch));
    }

    // Verify HTTP return code
    $httpReturnCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);

    // Process $content

} catch (Exception $e) {

    trigger_error(sprintf(
        'Curl error #%d: %s',
        $e->getCode(), $e->getMessage()
    ), E_USER_ERROR);

} finally {
    // Close curl handle if initialized successfully
    if (is_resource($ch)) {
        curl_close($ch);
    }
}</code>

By using curl_init(), you can identify potential issues with initialization. curl_errno() and curl_error() can provide specific information regarding the source of any errors detected during execution. Furthermore, verifying the HTTP return code ensures that your request was not met with an error response.

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