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added notes about serializing objects in php4 and added links to the new serialization section of oop.xml

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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@47746 c90b9560-bf6c-de11-be94-00142212c4b1
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Daniel Beckham 2001-05-18 02:23:42 +00:00
parent 8eae786de0
commit 7a1cff916c
1 changed files with 33 additions and 8 deletions
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41
functions/var.xml
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@ -883,14 +883,23 @@ print_r ($a);
This is useful for storing or passing PHP values around without
losing their type and structure.
</simpara>
<simpara>
To make the serialized string into a PHP value again, use
<function>unserialize</function>. <function>Serialize</function>
handles the types <type>integer</type>, <type>double</type>,
<type>string</type>, <type>array</type> (multidimensional) and
<type>object</type> (object properties will be serialized, but
methods are lost).
</simpara>
<simpara>
To make the serialized string into a PHP value again, use
<function>unserialize</function>. <function>Serialize</function>
handles the types <type>integer</type>, <type>double</type>,
<type>string</type>, <type>array</type> (multidimensional) and
<type>object</type>.
</simpara>
<note>
<para>
In PHP 3, object properties will be serialized, but methods are
lost. PHP 4 removes that limitation and restores both properties
and methods. Please see the <link
linkend="language.oop.serialization">Serializing Objects</link>
section of <link linkend="language.oop">Classes and
Objects</link> for more information.
</para>
</note>
<para>
<example>
<title><function>Serialize</function> example</title>
@ -913,6 +922,9 @@ if (!odbc_execute ($stmt, &amp;$sqldata)) {
</programlisting>
</example>
</para>
<para>
See Also: <function>unserialize</function>.
</para>
</refsect1>
</refentry>
@ -1019,6 +1031,16 @@ settype($bar, "string"); // $bar is now "1" (string)
If an object was serialized, its methods are not preserved in the
returned value.
</simpara>
<note>
<para>
In PHP 3, methods are not preserved when unserializing a
serialized object. PHP 4 removes that limitation and restores
both properties and methods. Please see the <link
linkend="language.oop.serialization">Serializing Objects</link>
section of <link linkend="language.oop">Classes and
Objects</link> or more information.
</para>
</note>
<para>
<example>
<title><function>Unserialize</function> example</title>
@ -1044,6 +1066,9 @@ if (!odbc_execute ($stmt, &amp;$sqldata) || !odbc_fetch_into ($stmt, &amp;$tmp))
</programlisting>
</example>
</para>
<para>
See Also: <function>serialize</function>.
</para>
</refsect1>
</refentry>