cvs: phpdoc /en/functions funchand.xml

philip Sun Mar 17 17:01:08 2002 EDT Modified files: /phpdoc/en/functions funchand.xml Log: function_exists: * Works on both internal/user defined functions. * See also get_defined_functions. * Implemented &return.success; * Should we expand on when this "won't work", like with certain image functions? Index: phpdoc/en/functions/funchand.xml diff -u phpdoc/en/functions/funchand.xml:1.28 phpdoc/en/functions/funchand.xml:1.29 --- phpdoc/en/functions/funchand.xml:1.28 Thu Feb 21 04:11:46 2002 +++ phpdoc/en/functions/funchand.xml Sun Mar 17 17:01:07 2002 @@ -1,5 +1,5 @@ <?xml version="1.0" encoding="iso-8859-1"?> -<!-- $Revision: 1.28 $ --> +<!-- $Revision: 1.29 $ --> <reference id="ref.funchand"> <title>Function Handling functions</title> <titleabbrev>Functions</titleabbrev> @@ -427,9 +427,8 @@ <methodparam><type>string</type><parameter>function_name</parameter></methodparam> </methodsynopsis> <para> - Checks the list of defined functions for - <parameter>function_name</parameter>. Returns &true; if the given - function name was found, &false; otherwise. + Checks the list of defined functions, both built-in (internal) and + user-defined, for <parameter>function_name</parameter>. &return.success; <informalexample> <programlisting role="php"> <![CDATA[ @@ -441,11 +440,16 @@ ]]> </programlisting> </informalexample> - Note that a function name may exist, even if the function itself - is unusable due to configuration or compiling options. + Note that a function name may exist even if the function itself + is unusable due to configuration or compiling options (with the + <link linkend="ref.image">image</link> functions being an example). + Also note that <function>function_exists</function> will return + &false; for constructs, such as <function>include_once</function> + and <function>echo</function>. </para> <para> - See also <function>method_exists</function>. + See also <function>method_exists</function> and + <function>get_defined_functions</function>. </para> </refsect1> </refentry>