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<?php
/**
* Instead of the time and space consuming textual representation used by PHP's `serialize`,
* igbinary stores php data structures in a compact binary form.
* Memory savings are significant when using memcached, APCu, or similar memory based storages for serialized data.
* The typical reduction in storage requirements are around 50%.
* The exact percentage depends on your data.
*
* But where does the name "igbinary" come from? There was once a similar project
* called fbinary but it has disappeared from the Internet. Its architecture
* wasn't very clean either. IG is short name for a finnish social networking site
* {@link http://irc-galleria.net/ IRC-Galleria}.
*
* Storing complex PHP data structures such as arrays of associative arrays
* with the standard PHP serializer is not very space efficient.
* Igbinary uses two strategies to minimize the size of the serialized
* output.
*
* 1. Repeated strings are stored only once (this also includes class and property names).
* Collections of objects benefit significantly from this.
* See the `igbinary.compact_strings` option.
*
* 2. Integer values are stored in the smallest primitive data type available:
* *123* = `int8_t`,
* *1234* = `int16_t`,
* *123456* = `int32_t`
* ... and so on.
*
* This file is igbinary's phpdoc documentation stub.
*
* @author Oleg Grenrus <oleg.grenrus@dynamoid.com>
* @version 1.0.0
* @package igbinary
*/
/**
* Generates a storable representation of a value.
* This is useful for storing or passing PHP values around without losing their type and structure.
* To make the serialized string into a PHP value again, use {@link igbinary_unserialize}.
*
* igbinary_serialize() handles all types, except the resource-type.
* You can even serialize() arrays that contain references to itself.
* Circular references inside the array/object you are serialize()ing will also be stored.
*
* If object implements {@link http://www.php.net/~helly/php/ext/spl/interfaceSerializable.html Serializable} -interface,
* PHP will call the member function serialize to get serialized representation of object.
*
* When serializing objects, PHP will attempt to call the member function __sleep prior to serialization.
* This is to allow the object to do any last minute clean-up, etc. prior to being serialized.
* Likewise, when the object is restored using unserialize() the __wakeup member function is called.
*
* @param mixed $value The value to be serialized.
* @return string Returns a string containing a binary representation of value that can be stored anywhere.
* @link http://www.php.net/serialize PHP's default serialize
*/
function
igbinary_serialize(
$
value
);
/** Creates a PHP value from a stored representation.
* igbinary_unserialize() takes a single serialized variable and converts it back into a PHP value.
*
* If the variable being unserialized is an object,
* then after successfully reconstructing the object,
* PHP will automatically call the __wakeup() member function (if it exists).
*
* If the passed in string could not be unserialized,
* then NULL is returned and an E_WARNING is issued.
*
* @param string $str The serialized string.
* @return mixed The unserialized value is returned. It can be a boolean, integer, float, string, array, object or null.
* @link http://www.php.net/manual/en/function.unserialize.php PHP's default unserialize
* @link https://secure.php.net/serializable Serializable interface
*/
function
igbinary_unserialize(
$
str
);
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