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[session] Simplify the basic session introduction. This information is duplicated elsewhere.

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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@324172 c90b9560-bf6c-de11-be94-00142212c4b1
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Drak 2012-03-13 02:12:21 +00:00
parent 725924e665
commit a7b98eb2db
1 changed files with 1 additions and 33 deletions
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34
reference/session/examples.xml
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@ -5,7 +5,6 @@
&reftitle.examples;
<section xml:id="session.examples.basic">
<title>Basic usage</title>
<note>
<para>
Sessions are a simple way to store data for individual users against a unique session ID.
This can be used to persist state information between page requests. Session IDs are normally
@ -37,16 +36,7 @@
Sessions normally shutdown automatically when PHP is finished executing a script, but can be
manually shutdown using the <function>session_write_close</function> function.
</para>
</note>
<para>
Use of <varname>$_SESSION</varname> (or
<varname>$HTTP_SESSION_VARS</varname> with PHP 4.0.6 or less) is
recommended for improved security and code readability. With
<varname>$_SESSION</varname>, there is no need to use the
<function>session_register</function>,
<function>session_unregister</function>,
<function>session_is_registered</function> functions. Session variables
are accessible like any other variables.
<example>
<title>
Registering a variable with <varname>$_SESSION</varname>.
@ -66,9 +56,7 @@ if (!isset($_SESSION['count'])) {
</example>
<example>
<title>
Unregistering a variable with <varname>$_SESSION</varname> and
<link
linkend="ini.register-globals">register_globals</link> disabled.
Unregistering a variable with <varname>$_SESSION</varname>.
</title>
<programlisting role="php">
<![CDATA[
@ -96,26 +84,6 @@ unset($_SESSION['count']);
to restore a reference to another variable.
</para>
</warning>
<para>
If <link
linkend="ini.register-globals">register_globals</link>
is enabled, then each global variable can be registered as session
variable. Upon a restart of a session, these variables will be restored
to corresponding global variables. Since PHP must know which global
variables are registered as session variables, users need to register
variables with <function>session_register</function> function.
You can avoid this by simply setting entries in
<varname>$_SESSION</varname>.
</para>
<para>
If <link
linkend="ini.register-globals">register_globals</link>
is enabled, then the global variables and the
<varname>$_SESSION</varname> entries will automatically reference the
same values which were registered in the prior session instance.
However, if the variable is registered by <varname>$_SESSION</varname>
then the global variable is available since the next request.
</para>
</section>
<section xml:id="session.idpassing">