(PHP 3>= 3.0.5, PHP 4 , PHP 5)
serialize --
Generates a storable representation of a value
Description
string
serialize ( mixed value)
serialize() returns a string containing a
byte-stream representation of value that
can be stored anywhere.
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
unserialize(). serialize()
handles all types, except the resource-type.
You can even serialize() arrays that contain
references to itself. References inside the array/object you
are serialize()ing will also be stored.
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.
Note:
In PHP 3, object properties will be serialized, but methods are
lost. PHP 4 removes that limitation and restores both properties
and methods. Please see the Serializing Objects
section of Classes and
Objects for more information.
Example 1. serialize() example |
<?php
$conn = odbc_connect("webdb", "php", "chicken");
$stmt = odbc_prepare($conn,
"UPDATE sessions SET data = ? WHERE id = ?");
$sqldata = array (serialize($session_data), $PHP_AUTH_USER);
if (!odbc_execute($stmt, &$sqldata)) {
$stmt = odbc_prepare($conn,
"INSERT INTO sessions (id, data) VALUES(?, ?)");
if (!odbc_execute($stmt, &$sqldata)) {
}
}
?>
|
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See Also: unserialize().
