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Introduction - Zend_Serializer

Introduction

Zend_Serializer provides an adapter based interface to simply generate storable representation of PHP types by different facilities, and recover.

Example #1 Using Zend_Serializer dynamic interface

To instantiate a serializer you should use the factory method with the name of the adapter:

$serializer = Zend_Serializer::factory('PhpSerialize');
// Now $serializer is an instance of Zend_Serializer_Adapter_AdapterInterface,
// specifically Zend_Serializer_Adapter_PhpSerialize
 
try {
    $serialized = $serializer->serialize($data);
    // now $serialized is a string
 
    $unserialized = $serializer->unserialize($serialized);
    // now $data == $unserialized
} catch (Zend_Serializer_Exception $e) {
    echo $e;
}

The method serialize() generates a storable string. To regenerate this serialized data you can simply call the method unserialize().

Any time an error is encountered serializing or unserializing, Zend_Serializer will throw a Zend_Serializer_Exception.

To configure a given serializer adapter, you can optionally add an array or an instance of Zend_Config to the factory() or to the serialize() and unserialize() methods:

$serializer = Zend_Serializer::factory('Wddx', array(
    'comment' => 'serialized by Zend_Serializer',
));
 
try {
    $serialized = $serializer->serialize(
        $data,
        array('comment' => 'change comment')
    );
 
    $unserialized = $serializer->unserialize(
        $serialized,
        array(/* options for unserialize */)
    );
} catch (Zend_Serializer_Exception $e) {
    echo $e;
}

Options passed to the factory() are valid for the instantiated object. You can change these options using the setOption(s) method. To change one or more options only for a single call, pass them as the second argument to either the serialize() or unserialize() method.

Example #2 Using the Zend_Serializer static interface

You can register a specific serializer adapter as a default serialization adapter for use with Zend_Serializer. By default, the PhpSerialize adapter will be registered, but you can change this option using the setDefaultAdapter() static method.

Zend_Serializer::setDefaultAdapter('PhpSerialize', $options);
// or
$serializer = Zend_Serializer::factory('PhpSerialize', $options);
Zend_Serializer::setDefaultAdapter($serializer);
 
try {
    $serialized   = Zend_Serializer::serialize($data, $options);
    $unserialized = Zend_Serializer::unserialize($serialized, $options);
} catch (Zend_Serializer_Exception $e) {
    echo $e;
}

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