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Added a warning about the register_globals change; added $GLOBALS.

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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@73028 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Torben Wilson 2002-03-12 23:12:28 +00:00
parent 8c46867068
commit 2a8588bf1b
1 changed files with 34 additions and 2 deletions
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36
language/variables.xml
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@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.38 $ -->
<!-- $Revision: 1.39 $ -->
<chapter id="language.variables">
<title>Variables</title>
@ -121,6 +121,28 @@ $bar = &test(); // Invalid.
<link linkend="reserved.variables">Predefined variables</link>.
</simpara>
<warning>
<simpara>
In PHP 4.1.0 and later, the default set of predefined variables
which are available in the global scope has changed. Individual
input and server variables are <emphasis>by default</emphasis>no
longer placed directly into the global scope; rather, they are
placed into the following <link
linkend="language.variables.superglobals">superglobal
arrays</link>.
</simpara>
<simpara>
You can still force the old behaviour by setting <link
linkend="ini.register-globals">register_globals</link> to 'On' in
your <filename>php.ini</filename> file.
</simpara>
<simpara>
For more information and background on this change, please see
the <ulink url="&url.php.release4.1.0;">PHP 4.1.0 Release
Announcement</ulink>.
</simpara>
</warning>
<simpara>
From version 4.1.0 onward, PHP provides a set of predefined arrays
containing variables from the web server (if applicable), the
@ -134,8 +156,18 @@ $bar = &test(); // Invalid.
<link linkend="reserved.variables">Predefined variables</link>.
</simpara>
<variablelist>
<variablelist id="language.variables.superglobals">
<title>PHP Superglobals</title>
<varlistentry>
<term><link linkend="reserved.variables.globals">$GLOBALS</link></term>
<listitem>
<simpara>
Contains a reference to every variable which is currently
available within the global scope of the script. The keys of
this array are the names of the global variables.
</simpara>
</listitem>
</varlistentry>
<varlistentry>
<term><link linkend="reserved.variables.server">$_SERVER</link></term>
<listitem>