dlearman1

asked on 3/6/2020

How to display data contained in JSON object?

I would like to output (for curiosity/debugging) the data values in the JSON object returned by Google ReCaptcha v3 verification. The ReCaptcha doc's show the object's format to be:

{
  "success": true|false,      
  "score": number,             
  "action": string,           
  "challenge_ts": timestamp,
  "hostname": string,        
  "error-codes": [...]        
}

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Here is code snippet:

<?php
.
.
.
 // post request to verify token with Google reCaptcha server
      //
      $url = "https://www.google.com/recaptcha/api/siteverify";
      $data = array (
        'secret' => $secretKey, 
        'response' => $captcha,
      );
         
      // use key 'http' even if request is to https://...
      //
      $options = array (
        'http' => array (
          'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
          'method'  => 'POST',
          'content' => http_build_query($data)
        )
      );

      $context  = stream_context_create($options);
      $response = file_get_contents($url, false, $context);

      $responseKeys = json_decode($response, true);

     // echo $responseKeys[success];
     // echo $responseKeys[action];
      //echo $responseKeys[score];
 
      if($responseKeys["success"] == true && $responseKeys["action"] == $action && $responseKeys["score"] >= 0.5) {
        echo ("reCaptcha.php thinks you are human");
        header ("location: ./sent-success.htm");
        } else {
          echo ("reCaptcha.php thinks you are a bot");
          header ("location: ./spam-block.htm");
        } 
    ?>

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Tried echo $responseKeys[success]; and var_dump($responseKeys. They don't appear to work.

GooglePHPJSON

Last Comment

Julian Hansen

8/22/2022 - Mon

Julian Hansen

3/7/2020

Why not just do

print_r($responseKeys);

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Julian Hansen

3/7/2020

But wait ...
What are you doing on line 34 and 37?

What happens when those lines execute?

Any output you have sent will be wiped as the page will be reloaded.

If you want to see the output either you have to kill the script immediately after output
OR
Disable the redirects
Or (my preference as you don't mess with the flow of the process)

file_put_contents('debug.log',print_r($responseKeys, true));

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And then check the debug.log file in the same folder as the primary script.

dlearman1

3/7/2020

ASKER

I've tried

$result = print_r($responseKeys);
      echo $result.'\r\n<br>';

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Which resulted in console.log displaying 1\r\n . Is this telling me that success and action variables are empty, and score is equal to 1? Or is the code malformed? Obviously not what I want.

I tried

file_put_contents('debug.log',print_r($responseKeys, true));

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and looked at FF debugger window, which was empty? When you say "in the same folder as the primary script," I'm assuming I need to be in the recaptcha.php directory? Tried the 'command+P' FIND FILE but only showed js files. Probably, I need to read up on using the debugger.

I have eliminated the header ("location: ./sent-success.htm"); statement. It appears I can trust the reCaptcha js library to restore the original submit button functionality.

Thanks

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ASKER CERTIFIED SOLUTION

Julian Hansen

3/8/2020

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dlearman1

3/8/2020

ASKER

If I'm following you, this would be the root folder for themagnolia.com. So far, I don't see a debg.log file there. The site is on a shared remote server and I don't have direct access to any files uphill of the site root folder.

It looks like your preferred method "file_put_contents('debug.log', print_r($responseKeys, true));" isn't working because of PHP server settings. I'm getting error messages

<b>Warning</b>:  file_get_contents(): https:// wrapper is disabled in the server configuration by allow_url_fopen=0 in <b>D:\inetpub\themagnolia\reCaptcha.php</b> on line <b>58</b><br />
<br />
<b>Warning</b>:  file_get_contents(https://www.google.com/recaptcha/api/siteverify): failed to open stream: no suitable wrapper could be found in <b>D:\inetpub\themagnolia\reCaptcha.php</b> on line <b>58</b><br />

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Line 58 is: $response = file_get_contents($url, false, $context);

file_get_contents() is a standard PHP function, so the error must be with the wrapper, But the PHP code verifies with no syntax errors.

Hopefully, I will be able to sort this out with the ISP tomorrow.

Julian Hansen

3/11/2020

It looks like your preferred method "file_put_contents('debug.log', print_r($responseKeys, true));" isn't working because of PHP server settings. I'm getting error messages

Not exactly, this error

b>Warning: file_get_contents(): https:// wrapper is disabled in the server configuration by allow_url_fopen=0 in D:\inetpub\themagnolia\reCaptcha.php on line 58

Has nothing to do with my debug statement. The debug uses file_PUT_contents - this is referring to file_GET_contents and is a very common message on shared hosting.

Using file_get_contents to get a remote URL is very often disabled for security reasons. You need to instead use curl() or fsocket() (cUrl is easier)