igbinary_unserialize

(PECL igbinary >= 1.1.1)

igbinary_unserialize Creates a PHP value from a stored representation from igbinary_serialize()

Descrizione

igbinary_unserialize(string $str): mixed

igbinary_unserialize() takes a single serialized variable from igbinary_serialize() and converts it back into a PHP value.

Avviso

Untrusted user input must not be passed to igbinary_unserialize(). Unserialization can result in code being loaded and executed due to object instantiation and autoloading, and a malicious user may be able to exploit this. Instead a safe, standard data interchange format such as JSON (via json_decode() and json_encode()) should be used, if serialized data needs to be passed to a client.

If there is the need to unserialize externally-stored serialized data, hash_hmac() can be used for data validation. It is important to ensure that nobody has tampered with the data.

Avviso

The igbinary serialization format does not provide a way to distinguish between different reference groups for the same value. All PHP references to a given value as treated as part of the same reference group when unserialized, even if they were parts of difference reference groups when serialized.

Elenco dei parametri

str

The serialized string generated by igbinary_serialize().

If the value being unserialized is an object, after successfully reconstructing the object igbinary will automatically attempt to call the __unserialize() or __wakeup() methods (if one exists).

Nota: unserialize_callback_func directive

The callback specified in the unserialize_callback_func directive is called when an undefined class is unserialized. If no callback is specified, the object will be instantiated as __PHP_Incomplete_Class.

Valori restituiti

The converted value is returned, and can be a bool, int, float, string, array, object, or null.

In case the passed string is not unserializeable, false is returned and E_NOTICE or E_WARNING is issued.

Errori/Eccezioni

Objects may throw Throwables in their unserialization handlers.

Note

Avviso

null or false is returned both in the case of an error and if unserializing the serialized null or false value. It is possible to catch this special case by comparing str with igbinary_serialize(null) or igbinary_serialize(false) or by catching the issued E_NOTICE.

Vedere anche:

add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top