get_defined_functions

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

get_defined_functionsLista todas las funciones definidas

Descripción

get_defined_functions(bool $exclude_disabled = true): array

Lista todas las funciones definidas.

Parámetros

exclude_disabled

Si las funciones deshabilitadas deben ser excluidas del valor de retorno.

Valores devueltos

Retorna un array multidimensional, que contiene la lista de todas las funciones definidas, tanto las funciones internas de PHP como las definidas por el usuario. Los nombres de las funciones internas son accesibles mediante $arr["internal"], y las funciones de usuario son accesibles mediante $arr["user"].

Historial de cambios

Versión Descripción
8.0.0 El valor por omisión del argumento exclude_disabled ha sido cambiado de false a true.
7.0.15, 7.1.1 El argumento exclude_disabled ha sido añadido.

Ejemplos

Ejemplo #1 Ejemplo con get_defined_functions()

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

$arr = get_defined_functions();

print_r($arr);
?>

El resultado del ejemplo sería algo similar a:

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
        )

)

Ver también

add a note

User Contributed Notes 5 notes

up
15
kkuczok at gmail dot com
12 years ago
You can list all arguments using ReflectionFunction class. It's not necessary to parse selected files/files as suggested by Nguyet.Duc.

http://php.net/manual/pl/class.reflectionfunction.php

Example:
<?php
function foo(&$bar, $big, $small = 1) {}
function
bar($foo) {}
function
noparams() {}
function
byrefandopt(&$the = 'one') {}

$functions = get_defined_functions();
$functions_list = array();
foreach (
$functions['user'] as $func) {
$f = new ReflectionFunction($func);
$args = array();
foreach (
$f->getParameters() as $param) {
$tmparg = '';
if (
$param->isPassedByReference()) $tmparg = '&';
if (
$param->isOptional()) {
$tmparg = '[' . $tmparg . '$' . $param->getName() . ' = ' . $param->getDefaultValue() . ']';
} else {
$tmparg.= '&' . $param->getName();
}
$args[] = $tmparg;
unset (
$tmparg);
}
$functions_list[] = 'function ' . $func . ' ( ' . implode(', ', $args) . ' )' . PHP_EOL;
}
print_r($functions_list);
?>

Output:
Array
(
[0] => function foo ( &&bar, &big, [$small = 1] )

[1] => function bar ( &foo )

[2] => function noparams ( )

[3] => function byrefandopt ( [&$the = one] )

)
up
10
mIHATESPAMduskis at bates dot edu
22 years ago
At least with PHP 4.2.3 on a GNU/Linux/Apache platform, get_defined_functions() returns user-defined functions as all-lower case strings regardless of how the functions are capitalized when they are defined.

Threw me for a loop.
up
6
peten at spam dot me dot not dot frontiernet dot net
23 years ago
Here's a useful trick with the get_defined_functions function - show all available functions with a link to the documentation (you can even change the mirror it goes to):

<?php
// the php mirror
$php_host = "http://us2.php.net/";

// the number of cols in our table
$num_cols = 3;

$ar = get_defined_functions();
$int_funct = $ar[internal];
sort($int_funct);
$count = count($int_funct);
?>
<html>
<head>
<title>
Available PHP Functions
</title>
</head>
<body>
<p>
<?php print $count; ?> functions
available on
<?php
print $_SERVER[SERVER_NAME];
?>
(<a href="<?php print $php_host;?>"
target="phpwin">php</a>
version
<?php print phpversion(); ?>)
</p>
<table align="center" border="2">
<tr>
<?php
for($i=0;$i<$count;$i++) {
$doc = $php_host
. "manual/en/function."
. strtr($int_funct[$i], "_", "-")
.
".php";
print
" <td><a href=\"" . $doc
. "\" target=\"phpwin\">"
. $int_funct[$i]
.
"</a></td>\n";
if((
$i > 1)
&& ((
$i+$num_cols)%$num_cols==($num_cols-1)))
print
" </tr>\n <tr>\n";
}
for(
$i=($num_cols-($count%$num_cols));$i>0;$i--)
print
" <td>&nbsp;</td>\n";
?>
</table>
</body>
</html>
up
5
berchentreff at berchentreff dot de
19 years ago
look at here, list all the defined function on your php-Version and give as well formatted output width links onto the php-manual:

<html><head>
<style type="text/css"><!--
li{font-family:Verdana,Arail,sans-serif;width:500px;margin-top:7px;}
a{padding:4px;}
a.a1{font-size:12px;background-color:#CCCCCC;color:#663300;}
a.a1:hover{background-color:#663300;color:#CCCCCC;}
a.a1:visited{background-color:#fff;color:#999;}
a.a1:visited:hover{background-color:#fff;color:#999;}
a.a0{font-size:12px;background-color:#CCCCFF;color:#663399;}
a.a0:hover{background-color:#663399;color:#CCCCFF;}
a.a0:visited{background-color:#ffC;color:#999;}
a.a0:visited:hover{background-color:#ffC;color:#999;}
--></style>
</head><body style="background-color:#999;">
<?php
$arr
= get_defined_functions();

foreach(
$arr as $zeile){
sort($zeile);$s=0;
foreach(
$zeile as $bzeile){
$s=($s)?0:1;
echo
"<li><a class='a".$s."' href='http://de.php.net/".$bzeile."'>".$bzeile."</a></li>";}
}
?>
</body>
</html>
up
2
Muneeb Aslam
9 years ago
This is rather a simple non-confusing script to get the function names linked to its manual page on php.net. Hope it helps someone. Commented script is self explainatory

<?php

/*declare a variable to php manual of functions.
change the $lng to the region you want it for,
i-e en/es/de etc etc */
$lng = "es";
$url = "http://www.php.net/manual/".$lng."/function.";

// get defined functions in a variable (it will be a 2D array)
$functions = get_defined_functions();

// Run nested foreach to get the function names
foreach($functions as $function){
foreach (
$function as $functionName){

/* Since php manual is using hyphens instead of underscores
for functions, we will convert underscores to hyphen whereever
there is one. */
if(strpos($functionName,"_") !== false){
$functionForURL = str_replace("_","-",$functionName);
} else {
$functionForURL = $functionName;
}

/* echo the link */
echo "<a href='".$url.$functionForURL.".php'>".$functionName."</a><br />";
}
}

?>
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