Code Examples -> serialize -- Generates a storable representation of a value

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PHP Code Examples

Title :	serialize -- Generates a storable representation of a value
Categories :	PHP, PHP Functions, Variables	documentation group PHP
Date :	Apr 24th 1999
Grade :	Be the 1st to grade this Code Example
Viewed :	3479
File :	No file for this code example.
Images :	No Images for this code example.

Search :	More code by documentation group PHP
Action :	Grade This Code Example
Tools :	My Examples List

Code

Description

Description

</H2
><DIV
CLASS="funcsynopsis"
><A
NAME="AEN44323"
></A
><P
></P
><P
><CODE
><CODE
CLASS="FUNCDEF"
>string <B
CLASS="function"
>serialize</B
></CODE
> (mixed value)</CODE
></P
><P
></P
></DIV
><P
> <B
CLASS="function"
>Serialize()</B
> returns a string containing a
byte-stream representation of <TT
CLASS="parameter"
><I
>value</I
></TT
> that
can be stored anywhere.
</P
><P
> This is useful for storing or passing PHP values around without
losing their type and structure.
</P
><P
> To make the serialized string into a PHP value again, use
<A
HREF="get_example.php3?Function=unserialize"
><B
CLASS="function"
>unserialize()</B
></A
>. <B
CLASS="function"
>Serialize()</B
>
handles the types <SPAN
CLASS="type"
>integer</SPAN
>, <SPAN
CLASS="type"
>double</SPAN
>,
<SPAN
CLASS="type"
>string</SPAN
>, <SPAN
CLASS="type"
>array</SPAN
> (multidimensional) and
<SPAN
CLASS="type"
>object</SPAN
> (object properties will be serialized, but
methods are lost).
</P
><P
> <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN44342"
></A
><P
><B
>Example 1. <B
CLASS="function"
>Serialize()</B
> example</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="programlisting"
>// $session_data contains a multi-dimensional array with session
// information for the current user. We use serialize() to store
// it in a database at the end of the request.

$conn = odbc_connect ("webdb", ", "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)) {
/* Something went wrong. Bitch, whine and moan. */
}
}
</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
</P
></DIV
>

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