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] )
)
get_defined_functions
(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
get_defined_functions — Devuelve un array de todas las funciones definidas
Descripción
Obtiene un array de todas las funciones definidas.
Parámetros
-
exclude_disabled -
Si deberían excluirse las funciones inhabilitadas del valor devuelto.
Valores devueltos
Devuelve un array multidimensional que contiene una lista de todas las funciones definidas, tanto de las incluidas (internas) como las definidas por el usuario. Las funciones internas serán accesibles mediante $arr["internal"], y las definidas por el usuario usando $arr["user"] (véase el ejemplo de abajo).
Historial de cambios
| Versión | Descripción |
|---|---|
| PHP 7.0.15, PHP 7.1.1 |
Se ha añadido el parámetro exclude_disabled.
|
Ejemplos
Ejemplo #1 Ejemplo de get_defined_functions()
<?php
function mifila($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] => mifila
)
)
Ver también
- function_exists() - Devuelve true si la función dada ha sido definida
- get_defined_vars() - Devuelve una matriz con todas las variables definidas
- get_defined_constants() - Devuelve un array asociativo con los nombres de todas las constantes y sus valores
- get_declared_classes() - Devuelve una matriz con los nombres de las clases definidas
add a note
User Contributed Notes 11 notes
kkuczok at gmail dot com ¶
11 years ago
mIHATESPAMduskis at bates dot edu ¶
21 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.
peten at spam dot me dot not dot frontiernet dot net ¶
22 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> </td>\n";
?>
</table>
</body>
</html>
strrev xc.noxeh@ellij ¶
16 years ago
Please note that functions created with create_function() are not returned.
(However that might change in a later version)
berchentreff at berchentreff dot de ¶
18 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."'>".$bzeile."</a></li>";}
}
?>
</body>
</html>
spudinski at gmail dot com ¶
16 years ago
To search for a function.
<html>
<head>
<title>List of all Internal functions</title>
<style type="text/css">
body {
background-color: #FFFFFF;
color: #222222;
font-size: 11px;
font-family: arial, tahoma;
}
table {
color: #222222;
font-size: 11px;
font-family: arial, tahoma;
}
tr.found {
background-color: #66EE00;
font-weight: bold;
}
a:link {
color: #222222;
}
a:visited {
color: #CCCCCC;
}
a:active {
color: #444444;
}
a:hover {
text-decoration: underline;
}
</style>
</head>
<body>
<p>
<form method="GET">
Search: <input type="text" name="search"><br>
<input type="submit">
</form>
</p>
<?php
if (!empty($_GET['search'])) {
echo '<p>' . '<a href="#' . $_GET['search'] . '">' .
'Goto ' . $_GET['search'] . '</a>' .
'<script type="text/javascript">
window.onload = function() {
document.location += "#' . $_GET['search'] . '";
return true;
}
</script>
</p>';
}
?>
<p>
<table>
<?php
$country = 'us';
$functions = get_defined_functions();
$functions = $functions['internal'];
$num = 0;
foreach($functions as $function) {
$num++;
echo '<tr ' . (($_GET['search'] == $function) ? 'class="found"' : '') . '><td>' .
number_format($num) . '</td><td>' . '<a name="' . $function . '" href="http://' . $country . '.php.net/' .
$function . '">' . $function . '</a>' . '</td></tr>';
}
?>
</table>
</p>
</body>
</html>
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 />";
}
}
?>
Muneeb Aslam ¶
9 years ago
We can also get the function names with this simple foreach
<?php
//Since its a two dimensional array
$functions = get_defined_functions();
//We can use nested foreach to get the function names
foreach($functions as $function){
foreach($function as $thisFunc){
echo $thisFunc . "<br />";
}
}
?>
Nguyet.Duc ¶
13 years ago
get_defined_functions() just returns a list of function names without function arguments. Here is the code to list user-defined function names plus arguments:
<?php
$content = file_get_contents('example.php');
preg_match_all("/(function )(\S*\(\S*\))/", $content, $matches);
foreach($matches[2] as $match) {
$function[] = "// " . trim($match) . "<br />\n";
}
natcasesort($function);
$functionlist .= "/* Functions in this file */<br />\n";
$functionlist .= "/**************************/<br />\n\n";
$functionlist .= implode('', $function);
echo $functionlist;
?>
Output:
/* Functions in this file */
/**************************/
// add_data($data)
// add_files($list)
// archive($name)
// bzip_file($name)
rob at webdimension dot co dot uk ¶
13 years ago
A quick way of using this function:
<?php
// ALL USER DEFINED FUNCTIONS
$arr = get_defined_functions();
foreach ($arr['user'] as $key => $value){
echo $value.'<br />';
}
// ALL USER DEFINED FUNCTIONS
// ALL INTERNAL FUNCTIONS
$arr = get_defined_functions();
foreach ($arr['internal'] as $key => $value){
echo $value.'<br />';
}
// ALL INTERNAL FUNCTIONS
?>
ChaosKaizer ¶
16 years ago
for user defined function
<?php
/**
* @param string $function_name The user function name, as a string.
* @return Returns TRUE if function_name exists and is a function, FALSE otherwise.
*/
function user_func_exists($function_name = 'do_action') {
$func = get_defined_functions();
$user_func = array_flip($func['user']);
unset($func);
return ( isset($user_func[$function_name]) );
}
?>
