unserialize()[function.unserialize]:偏移时出错

Question

我正在使用Hotaru CMS和图像上传插件,如果我尝试将图像附加到帖子,我会收到此错误,否则没有错误.

违规代码(错误指向**):

/**
     * Retrieve submission step data
     *
     * @param $key - empty when setting
     * @return bool
     */
    public function loadSubmitData($h, $key = '')
    {
        // delete everything in this table older than 30 minutes:
        $this->deleteTempData($h->db);

        if (!$key) { return false; }

        $cleanKey = preg_replace('/[^a-z0-9]+/','',$key);
        if (strcmp($key,$cleanKey) != 0) {
            return false;
        } else {
            $sql = "SELECT tempdata_value FROM " . TABLE_TEMPDATA . " WHERE tempdata_key = %s ORDER BY tempdata_updatedts DESC LIMIT 1";
            $submitted_data = $h->db->get_var($h->db->prepare($sql, $key));
            **if ($submitted_data) { return unserialize($submitted_data); } else { return false; }** 
        }
    }

表中的数据,注意结束位有图像信息,我不是PHP的专家,所以我想知道你们/ gals可能会怎么想？

tempdata_value:

a:10:{s:16:"submit_editorial";b:0;s:15:"submit_orig_url";s:13:"www.bbc.co.uk";s:12:"submit_title";s:14:"No title found";s:14:"submit_content";s:12:"dnfsdkfjdfdf";s:15:"submit_category";i:2;s:11:"submit_tags";s:3:"bbc";s:9:"submit_id";b:0;s:16:"submit_subscribe";i:0;s:15:"submit_comments";s:4:"open";s:5:"image";s:19:"C:fakepath100.jpg";}

编辑:我想我已找到序列化位...

/**
     * Save submission step data
     *
     * @return bool
     */
    public function saveSubmitData($h)
    {
        // delete everything in this table older than 30 minutes:
        $this->deleteTempData($h->db);

        $sid = preg_replace('/[^a-z0-9]+/i', '', session_id());
        $key = md5(microtime() . $sid . rand());
        $sql = "INSERT INTO " . TABLE_TEMPDATA . " (tempdata_key, tempdata_value, tempdata_updateby) VALUES (%s,%s, %d)";
        $h->db->query($h->db->prepare($sql, $key, serialize($h->vars['submitted_data']), $h->currentUser->id));
        return $key;
    }

Answer 1

unserialize() [function.unserialize]: Error at offsetinvalid serialization data由于长度无效,会费

快速解决

你可以做的是recalculating the length序列化数组中的元素

您当前的序列化数据

$data = 'a:10:{s:16:"submit_editorial";b:0;s:15:"submit_orig_url";s:13:"www.bbc.co.uk";s:12:"submit_title";s:14:"No title found";s:14:"submit_content";s:12:"dnfsdkfjdfdf";s:15:"submit_category";i:2;s:11:"submit_tags";s:3:"bbc";s:9:"submit_id";b:0;s:16:"submit_subscribe";i:0;s:15:"submit_comments";s:4:"open";s:5:"image";s:19:"C:fakepath100.jpg";}';

没有重新计算的示例

var_dump(unserialize($data));

产量

Notice: unserialize() [function.unserialize]: Error at offset 337 of 338 bytes

重新计算

$data = preg_replace('!s:(\d+):"(.*?)";!e', "'s:'.strlen('$2').':\"$2\";'", $data);
var_dump(unserialize($data));

产量

array
  'submit_editorial' => boolean false
  'submit_orig_url' => string 'www.bbc.co.uk' (length=13)
  'submit_title' => string 'No title found' (length=14)
  'submit_content' => string 'dnfsdkfjdfdf' (length=12)
  'submit_category' => int 2
  'submit_tags' => string 'bbc' (length=3)
  'submit_id' => boolean false
  'submit_subscribe' => int 0
  'submit_comments' => string 'open' (length=4)
  'image' => string 'C:fakepath100.jpg' (length=17)

推荐 ..我

而不是使用这种快速修复...我会建议你更新问题

• 如何序列化数据

• 你是如何保存它的..

================================编辑1 ================ ===============

错误

生成错误是因为使用双引号"代替单引号',这C:\fakepath\100.png就是转换为的原因C:fakepath100.jpg

修复错误

你需要改变$h->vars['submitted_data']From(注意相当于')

更换

 $h->vars['submitted_data']['image'] = "C:\fakepath\100.png" ;

同

 $h->vars['submitted_data']['image'] = 'C:\fakepath\100.png' ;

附加过滤器

您也可以在调用serialize之前添加此简单过滤器

function satitize(&$value, $key)
{
    $value = addslashes($value);
}

array_walk($h->vars['submitted_data'], "satitize");

如果您有UTF字符,也可以运行

 $h->vars['submitted_data'] = array_map("utf8_encode",$h->vars['submitted_data']);

如何检测未来序列化数据中的问题

  findSerializeError ( $data1 ) ;

产量

Diffrence 9 != 7
    -> ORD number 57 != 55
    -> Line Number = 315
    -> Section Data1  = pen";s:5:"image";s:19:"C:fakepath100.jpg
    -> Section Data2  = pen";s:5:"image";s:17:"C:fakepath100.jpg
                                            ^------- The Error (Element Length)

findSerializeError 功能

function findSerializeError($data1) {
    echo "<pre>";
    $data2 = preg_replace ( '!s:(\d+):"(.*?)";!e', "'s:'.strlen('$2').':\"$2\";'",$data1 );
    $max = (strlen ( $data1 ) > strlen ( $data2 )) ? strlen ( $data1 ) : strlen ( $data2 );

    echo $data1 . PHP_EOL;
    echo $data2 . PHP_EOL;

    for($i = 0; $i < $max; $i ++) {

        if (@$data1 {$i} !== @$data2 {$i}) {

            echo "Diffrence ", @$data1 {$i}, " != ", @$data2 {$i}, PHP_EOL;
            echo "\t-> ORD number ", ord ( @$data1 {$i} ), " != ", ord ( @$data2 {$i} ), PHP_EOL;
            echo "\t-> Line Number = $i" . PHP_EOL;

            $start = ($i - 20);
            $start = ($start < 0) ? 0 : $start;
            $length = 40;

            $point = $max - $i;
            if ($point < 20) {
                $rlength = 1;
                $rpoint = - $point;
            } else {
                $rpoint = $length - 20;
                $rlength = 1;
            }

            echo "\t-> Section Data1  = ", substr_replace ( substr ( $data1, $start, $length ), "<b style=\"color:green\">{$data1 {$i}}</b>", $rpoint, $rlength ), PHP_EOL;
            echo "\t-> Section Data2  = ", substr_replace ( substr ( $data2, $start, $length ), "<b style=\"color:red\">{$data2 {$i}}</b>", $rpoint, $rlength ), PHP_EOL;
        }

    }

}

保存到数据库的更好方法

$toDatabse = base64_encode(serialize($data));  // Save to database
$fromDatabase = unserialize(base64_decode($data)); //Getting Save Format 

Answer 2

我没有足够的声誉来发表评论,所以我希望使用上述"正确"答案的人能够看到这一点:

从php 5.5开始,preg_replace()中的/ e修饰符已被完全弃用,上面的preg_match将会出错.php文档建议在其位置使用preg_match_callback.

请找到以下解决方案作为上述提议的preg_match的替代方案.

$fixed_data = preg_replace_callback ( '!s:(\d+):"(.*?)";!', function($match) {      
    return ($match[1] == strlen($match[2])) ? $match[0] : 's:' . strlen($match[2]) . ':"' . $match[2] . '";';
},$bad_data );

Answer 3

还有另一个原因unserialize()因为您不正确地将序列化数据放入数据库而失败,请参阅此处的官方说明.由于serialize()返回二进制数据和php变量不关心编码方法,因此将其置于TEXT中,VARCHAR()将导致此错误.

解决方案:将序列化数据存储到表中的BLOB中.

Answer 4

快速解决

重新计算序列化数组中元素的长度 - 但不使用(preg_replace)它已被弃用 - 更好地使用preg_replace_callback:

$data = preg_replace_callback('!s:(\d+):"(.*?)";!', function($m) { return 's:'.mb_strlen($m[2]).':"'.$m[2].'";'; }, $data);

Answer 5

由于您的字符集错误而导致此错误。

在打开标签后设置字符集：

header('Content-Type: text/html; charset=utf-8');

并在数据库中设置charset utf8：

mysql_query("SET NAMES 'utf8'");

Answer 6

$badData = 'a:2:{i:0;s:16:"as:45:"d";
Is \n";i:1;s:19:"as:45:"d";
Is \r\n";}';

您无法使用建议的正则表达式修复损坏的序列化字符串：

$data = preg_replace('!s:(\d+):"(.*?)";!e', "'s:'.strlen('$2').':\"$2\";'", $badData);
var_dump(@unserialize($data)); // Output: bool(false)

// or

$data = preg_replace_callback(
    '/s:(\d+):"(.*?)";/',
    function($m){
        return 's:' . strlen($m[2]) . ':"' . $m[2] . '";';
    },
    $badData
);
var_dump(@unserialize($data)); // Output: bool(false)

您可以使用以下正则表达式修复损坏的序列化字符串：

$data = preg_replace_callback(
    '/(?<=^|\{|;)s:(\d+):\"(.*?)\";(?=[asbdiO]\:\d|N;|\}|$)/s',
    function($m){
        return 's:' . strlen($m[2]) . ':"' . $m[2] . '";';
    },
    $badData
);

var_dump(@unserialize($data));

输出

array(2) {
  [0] =>
  string(17) "as:45:"d";
Is \n"
  [1] =>
  string(19) "as:45:"d";
Is \r\n"
}

或者

array(2) {
  [0] =>
  string(16) "as:45:"d";
Is \n"
  [1] =>
  string(18) "as:45:"d";
Is \r\n"
}

Answer 7

public function unserializeKeySkills($string) {
    $output = array();
    $string = trim(preg_replace('/\s\s+/', ' ',$string));
    $string = preg_replace_callback('!s:(\d+):"(.*?)";!', function($m) { return 's:'.strlen($m[2]).':"'.$m[2].'";'; }, utf8_encode( trim(preg_replace('/\s\s+/', ' ',$string)) ));
    try {
        $output =  unserialize($string);
    } catch (\Exception $e) {
        \Log::error("unserialize Data : " .print_r($string,true));
    }
    return $output;
}