<HTML ><HEAD ><TITLE >Function Handling functions</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="PHP Manual" HREF="index.html"><LINK REL="UP" TITLE="Function Reference" HREF="funcref.html"><LINK REL="PREVIOUS" TITLE="ftp_systype" HREF="function.ftp-systype.html"><LINK REL="NEXT" TITLE="call_user_func_array" HREF="function.call-user-func-array.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=ISO-8859-1"></HEAD ><BODY CLASS="reference" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.ftp-systype.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.call-user-func-array.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="reference" ><A NAME="ref.funchand" ></A ><DIV CLASS="TITLEPAGE" ><H1 CLASS="title" >XXXIV. Function Handling functions</H1 ><DIV CLASS="PARTINTRO" ><A NAME="AEN29150" ></A ><DIV CLASS="section" ><H1 CLASS="section" ><A NAME="funchand.intro" ></A >Introduction</H1 ><P > These functions all handle various operations involved in working with functions. </P ></DIV ><DIV CLASS="section" ><H1 CLASS="section" ><A NAME="funchand.requirements" ></A >Requirements</H1 ><P >No external libraries are needed to build this extension.</P ></DIV ><DIV CLASS="section" ><H1 CLASS="section" ><A NAME="funchand.installation" ></A >Installation</H1 ><P >There is no installation needed to use these functions; they are part of the PHP core.</P ></DIV ><DIV CLASS="section" ><H1 CLASS="section" ><A NAME="funchand.configuration" ></A >Runtime Configuration</H1 ><P >This extension has no configuration directives defined in <TT CLASS="filename" >php.ini</TT >.</P ></DIV ><DIV CLASS="section" ><H1 CLASS="section" ><A NAME="funchand.constants" ></A >Predefined Constants</H1 ><P >This extension has no constants defined.</P ></DIV ></DIV ><DIV CLASS="TOC" ><DL ><DT ><B >Table of Contents</B ></DT ><DT ><A HREF="function.call-user-func-array.html" >call_user_func_array</A > -- Call a user function given with an array of parameters </DT ><DT ><A HREF="function.call-user-func.html" >call_user_func</A > -- Call a user function given by the first parameter </DT ><DT ><A HREF="function.create-function.html" >create_function</A > -- Create an anonymous (lambda-style) function</DT ><DT ><A HREF="function.func-get-arg.html" >func_get_arg</A > -- Return an item from the argument list</DT ><DT ><A HREF="function.func-get-args.html" >func_get_args</A > -- Returns an array comprising a function's argument list </DT ><DT ><A HREF="function.func-num-args.html" >func_num_args</A > -- Returns the number of arguments passed to the function </DT ><DT ><A HREF="function.function-exists.html" >function_exists</A > -- Return <TT CLASS="constant" ><B >TRUE</B ></TT > if the given function has been defined </DT ><DT ><A HREF="function.get-defined-functions.html" >get_defined_functions</A > -- Returns an array of all defined functions </DT ><DT ><A HREF="function.register-shutdown-function.html" >register_shutdown_function</A > -- Register a function for execution on shutdown </DT ><DT ><A HREF="function.register-tick-function.html" >register_tick_function</A > -- Register a function for execution on each tick </DT ><DT ><A HREF="function.unregister-tick-function.html" >unregister_tick_function</A > -- De-register a function for execution on each tick </DT ></DL ></DIV ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.ftp-systype.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.call-user-func-array.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >ftp_systype</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="funcref.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >call_user_func_array</TD ></TR ></TABLE ></DIV ></BODY ></HTML >