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If you are new to PHP or just need to refresh your skills, this is the place to start. This series of tutorials will give you the basic knowledge you will need to create a simple PHP website.

PHP is a reflective programming language originally designed for producing dynamic web pages.[1] PHP is used mainly in server-side scripting, but can be used from a command line interface or in standalone graphical applications. Textual User Interfaces can also be created using ncurses.

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get_defined_functions

(PHP 4 >= 4.0.4, PHP 5)

get_defined_functions -- Returns an array of all defined functions

Description

array get_defined_functions ( void )

Gets an array of all defined functions.

Return Values

Returns an multidimensional array containing a list of all defined functions, both built-in (internal) and user-defined. The internal functions will be accessible via $arr["internal"], and the user defined ones using $arr["user"] (see example below).

Examples

Example 1. get_defined_functions() example

<?php
function myrow($id, $data)
{
    return "<tr><th>$id</th><td>$data</td></tr>\n";
}

$arr = get_defined_functions();

print_r($arr);
?>

The above example will output something similar to:

Array
(
    [internal] => Array
        (
            [0] => zend_version
            [1] => func_num_args
            [2] => func_get_arg
            [3] => func_get_args
            [4] => strlen
            [5] => strcmp
            [6] => strncmp
            ...
            [750] => bcscale
            [751] => bccomp
        )

    [user] => Array
        (
            [0] => myrow
        )

)

See Also

function_exists()
get_defined_vars()
get_defined_constants()

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Another Useful functions:


zend-api.zend-exception-get-default | function.yp-get-default-domain | function.udm-get-doc-count | function.stream-context-get-default | function.openssl-pkey-get-details | function.newt-listitem-get-data | function.msession-get-data | function.ldap-get-dn | function.iis-get-dir-security | function.i18n-loc-get-default | function.get-defined-vars | function.get-defined-functions | function.get-defined-constants | function.get-declared-interfaces | function.get-declared-classes |


PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. If you are new to PHP and want to get some idea of how it works, try the introductory tutorial. After that, check out the online manual, and the example archive sites and some of the other resources available in the links section.