Json_decode在收到curl数据后返回NULL，并返回NULL

Question

嗨，我triyng解码我收到的JSON与json_decode()，但每次返回NULL。

 foreach ($_data->response as $item){ 
    $test[$item->plugin] = $item->new_version; 
} 
$compteur = 0; 
$compteur2 = 0; 
$values = array(); 
foreach ($apl as $p){ 
    if ($_data != null){ 
      if(isset($test[$p])) { 

       $values[$compteur] = array(
        'id' => $compteur, 
        'plugin_name' => $plugins[$p]["Name"], 
        'plugin_version' => $plugins[$p]["Version"], 
        'plugin_up_to_date' => $test[$p], 
       ); 

      } 
      else{ 

       $values[$compteur] = array(
        'id' => $compteur, 
        'plugin_name' => $plugins[$p]["Name"], 
        'plugin_version' => $plugins[$p]["Version"], 
        'plugin_up_to_date' => '0' 
       ); 

      } 

    } 
    else{ 
     array_push($values, array(
      'id' => $compteur, 
      'plugin_name' => $plugins[$p]["Name"], 
      'plugin_version' => $plugins[$p]["Version"], 
      'plugin_up_to_date' => '0' 
     )); 
     $compteur2++; 
    } 
    $compteur++; 

} 
$compteur = 0; 
$compteur2 = 0; 

array_push($values, array(
    'Framework' => "WordPress", 
    'Version' => $wp_version, 
)); 

$values = array_map("unserialize", array_unique(array_map("serialize", $values))); 
$values = array_values($values); 


/* Codage de la clé de cryptage sous 16 Bytes */ 
$enc = MCRYPT_RIJNDAEL_128; 
$key = "mercijackymichel"; 
$mode = MCRYPT_MODE_CBC; 
$text = "123"; 
$ivSize = 16; 
$iv = str_repeat("\0", $ivSize); 

/*returning the json*/ 

return $crypt = base64_encode(mcrypt_encrypt($enc, $key, json_encode($values), $mode, $iv)); 

这是我的代码，使我的JSON

的JSON是这样的：

[{"id":0,"plugin_name":"Akeeba Backup for WordPress","plugin_version":"1.9.0","plugin_up_to_date":"0"},{"id":1,"plugin_name":"Contact Form 7","plugin_version":"4.4.2","plugin_up_to_date":"0"},{"id":2,"plugin_name":"Cornerstone","plugin_version":"1.2.4","plugin_up_to_date":"1.3.0"},{"id":3,"plugin_name":"Duplicate Page","plugin_version":"1.4","plugin_up_to_date":"0"},{"id":4,"plugin_name":"Slider Revolution","plugin_version":"5.2.5.3","plugin_up_to_date":"5.2.6"},{"id":5,"plugin_name":"WordPress Importer","plugin_version":"0.6.1","plugin_up_to_date":"0"},{"id":6,"plugin_name":"Yoast SEO","plugin_version":"3.4","plugin_up_to_date":"3.4.1"},{"id":7,"plugin_name":"WP Migrate DB","plugin_version":"0.8","plugin_up_to_date":"0"},{"id":8,"plugin_name":"X – Google Analytics","plugin_version":"1.0.0","plugin_up_to_date":"0"},{"Framework":"WordPress","Version":"4.5.3"}] 

还有就是打电话给我的PHP脚本代码：

$curlSession = curl_init(); 

    echo '<br>'.$url.'<br><br>'; 

    $ua = 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.2 (KHTML, like Gecko) Chrome/22.0.1216.0 Safari/537.2'; 
    curl_setopt($curlSession, CURLOPT_URL, $url.'backup/getModul.php'); 
    curl_setopt($curlSession, CURLOPT_RETURNTRANSFER,true); 
    curl_setopt($curlSession, CURLOPT_USERAGENT, $ua); 

    $result =base64_decode(curl_exec($curlSession)); 

    $httpCode = curl_getinfo($curlSession, CURLINFO_HTTP_CODE); 

    if ($httpCode == 401){ 
     echo 'Problème de connexion check .htacces'; 
    }else{ 


     $decrypt = mcrypt_decrypt($enc, $key, $result, $mode, $iv); 
     var_dump($decrypt); 
     var_dump(json_decode($decrypt)); 
     var_dump(json_last_error()); 
     var_dump(json_last_error_msg()); 

    } 

    curl_close($curlSession); 

但是这每次都会返回NULL，我试着调用stripslashes()，以UTF-8重新编码，但不是NG似乎工作

Control character error, possibly incorrectly encoded 

这是错误我得到通过调用json_last_error()

如果您有任何想法..将是巨大的！

Answer 1

您的加密/解密算法正在添加填充以符合块大小。你应该从末端去除空字符，例如：

rtrim($decrypted, "\0");