如何修改CURL请求YOURLS API的代码以提取shorturl值？

Got it, let's adjust your code to pull just the shorturl value instead of echoing the entire API response. Here's how to do it step by step:

Key Background #

The YOURLS API returns data in JSON format (as long as you specify format=json in your POST fields), so we just need to decode that JSON string and target the specific key we want.

Modified Code #

Here's the full adjusted code snippet, with comments explaining the new parts:

// Init the CURL session
$ch = curl_init();
curl_setopt( $ch, CURLOPT_URL, $api_url );
curl_setopt( $ch, CURLOPT_HEADER, 0 ); // No header in the result
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true ); // Return, do not echo result
curl_setopt( $ch, CURLOPT_POST, 1 ); // This is a POST request
curl_setopt( $ch, CURLOPT_POSTFIELDS, array(
    // Fill in your required YOURLS API data here
    'url' => 'https://your-long-url-to-shorten.com',
    'action' => 'shorturl',
    'format' => 'json', // Critical: Ensures response is JSON-decodable
    'username' => 'your-yourls-username',
    'password' => 'your-yourls-password'
) );

// Execute the CURL request and get raw response
$data = curl_exec($ch);

// Clean up the CURL session
curl_close($ch);

// Decode JSON response into an associative array
$response = json_decode($data, true);

// Extract and output only the shorturl (with error handling)
if (isset($response['shorturl'])) {
    echo $response['shorturl'];
} else {
    // Handle errors gracefully - YOURLS often returns a message for failures
    if (isset($response['message'])) {
        echo "Failed to get short URL: " . $response['message'];
    } else {
        echo "Error: Invalid or unexpected API response";
    }
}

What Changed? #

• Added JSON decoding: json_decode($data, true) converts the raw JSON string into a PHP associative array, making it easy to access specific values.
• Targeted shorturl extraction: Instead of echoing the whole $data string, we check if the shorturl key exists in the decoded array and output only that value.
• Error handling: The isset() checks prevent PHP warnings if the API returns an error (like invalid credentials or a malformed URL) and gives you meaningful feedback.

Critical Note #

Don't forget to include 'format' => 'json' in your POST fields! YOURLS defaults to returning HTML for responses, which won't work with json_decode().

内容的提问来源于stack exchange，提问作者DigiNet Events