Php Session Unserialize Error At Offset
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Drupal Notice: Unserialize(): Error At Offset
a minute: Sign up unserialize() [function.unserialize]: Error at offset up vote 47 down vote favorite 33 I am using Hotaru CMS with the Image Upload plugin, I get this error if I try to attach an image to a post, otherwise there is no error. The offending code (error points to line with **): /** * Retrieve submission step data * notice unserialize() error at offset opencart * @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($submitted_data); } else { return false; }** } } Data from the table, notice the end bit has the image info, I am not an expert in PHP so I was wondering what you guys/gals might think? tempdata_value: a:10:{s:16:"submit_editorial";b:0;s:15:"submit_orig_url";s:13:"www.bbc.co.uk";s:12:"submit_title";s:14:"No title found";s:14:"submit_content";s:12:"dnfsdkfjdfdf";s:15:"submit_category";i:2;s:11:"submit_tags";s:3:"bbc";s:9:"submit_id";b:0;s:16:"submit_subscribe";i:0;s:15:"submit_comments";s:4:"open";s:5:"image";s:19:"C:fakepath100.jpg";} Edit: I think I've found the serialize bit... /** * Save submission step data * * @return bool */ public function saveSubmitData($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
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Laravel Unserialize() Error At Offset
Testimonials Contact @jackreichert Musings Reference Web Development Design Handling a PHP unserialize offset error… and why it happens I discovered recently the importance of
Php Unserialize Returns False
proper collation of database tables. I inherited a proprietary CMS to manage. The default collation was latin1_swedish_ci. Apparently it's because "The bloke who wrote it was co-head of a Swedish company". The problem occurred when a form we had on http://stackoverflow.com/questions/10152904/unserialize-function-unserialize-error-at-offset our site began getting submissions with foreign characters. The database collation couldn't accept the characters and was saving them as question marks (?). "Serialization is the process of translating data structures or object state into a format that can be stored." For example the array: $returnValue = serialize(array('hello', 'world')); Will become: a:2:{i:0;s:5:"hello";i:1;s:5:"world";} This is what the above string means: There is an array that is 2 in length. a:2. The first item in the array has a key that https://www.jackreichert.com/2014/02/handling-a-php-unserialize-offset-error/ is an integer with the value of 0. i:0. The value for that item is a string that is 5 characters long, which is "hello". s:5. The second item in the array has a key that is an integer with the value of 1. i:1. The value for that item is a string that is 5 characters long, which is "world". s:5. An unserialize offset error can occur when the string count in the serialized data does not match the length of the string being saved. so in the above example that would look like this: a:2:{i:0;s:4:"hello";i:1;s:5:"world";} Notice the number ‘4', while there are really 5 characters in the world ‘hello'. So the question is, why would the offset happen when a ? replaces a foreign character? To understand why, you need to dig into how UTF-8 works and things will become clear. The UTF-8 value of ‘?' is ‘3f', while the value for ‘Æ' is ‘c3 86'. '?' translates into s:1:"?"; while 'Æ' translates into s:2:"Æ";. Notice the 2 replacing the 1 in the string length. So basically, what's happening is that when php serializes the data it is storing the foreign character as a double the length but when it's passed to MySQL, when the table isn't formatted for UTF-8, the database converts the character to a ?, which is then stored as a single character. But the serialization length is not updated, so when you go and unserialize the data there is an
using file_get_contents unserialize that array so I could go about my business but I kept getting this error: unserialize() [function.unserialize]: Error at offset 0 of http://www.microtuts.com/php-unserialize-error-at-offset-simple-solution/ 3457 bytes I looked around and couldn’t find a simple a solution. I’m sure this error can occur in other ways, but I was trying with the simplest of arrays: Array("Ryan" => "Bosinger"); My problem was that my echo statement was throwing some whitespace in there. That’s all. This fixed it: $data["search_results"] = file_get_contents("http://localhost/sphider/search.php?query=" . $search_for . "&search=1&start=" . $start); $result_string = error at trim($data["search_results"]); $result_array = unserialize($result_string); Basically, try trimming the whitespace before unserializing. Hope that helps! Also, I was using Codeigniter but I really don’t think that has anything to do with it. Creating your first programming language is easier than you think. Understanding how a programming language works is a surefire way to be a better developer. Read more. Suggested Reading written by Ryan error at offset Bosinger Ryan is a web developer living and working in Banff Alberta. He also writes for giftsforpeoplewitheverything.com and freefoley.com. 2 Responses to "PHP: Unserialize() Error at Offset… (Simple Solution)" Erik says: June 20, 2012 at 5:46 pm There's really no good way to test if a string is serialized or not. Some stackoverflow article says it would return false, but in my case I ended up with the same error as you. Only a try/catch kept my app from throwing an error… Reply Plamen Tetevensky says: October 22, 2014 at 1:03 pm Your output buffer already contains some leading data (zeros, \r, \n, etc.) from outside your opening php tag. For example, if you put