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get_defined_functions — Liefert ein Array aller definierten Funktionen
Liefert ein Array aller definierten Funktionen
Liefert ein multidimensionales Array mit der Liste aller definierten internen und benutzerdefinierten Funktionen. Die internen Funktionen finden sich im Unterarray $arr["internal"], die benutzerdefinierten in $arr["user"] (siehe auch das folgende Beispiel). below).
Beispiel #1 get_defined_functions() Beispiel
<?php
function myrow($id, $data)
{
return "<tr><th>$id</th><td>$data</td></tr>\n";
}
$arr = get_defined_functions();
print_r($arr);
?>
Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
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
)
)
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[$function_name]) );
}
?>
Please note that functions created with create_function() are not returned.
(However that might change in a later version)
To search for a function.
<html>
<head>
<title>List of all Internal functions</title>
<style type="text/css">
body {
background-color: #FFFFFF;
color: #222222;
font-size: 11px;
font-family: arial, tahoma;
}
table {
color: #222222;
font-size: 11px;
font-family: arial, tahoma;
}
tr.found {
background-color: #66EE00;
font-weight: bold;
}
a:link {
color: #222222;
}
a:visited {
color: #CCCCCC;
}
a:active {
color: #444444;
}
a:hover {
text-decoration: underline;
}
</style>
</head>
<body>
<p>
<form method="GET">
Search: <input type="text" name="search"><br>
<input type="submit">
</form>
</p>
<?php
if (!empty($_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>
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>
Here is another example which list all the available functions and gives a link to the manual pages at the same time.
<?php
$manref = "http://www.php.net/manual/en/function";
$arr = get_defined_functions();
while (list($type,$list) = each($arr)) {
if ($type == "internal" && is_array($list)) {
sort($list);
foreach ($list as $func) {
if ($func == "_")
$func2 = "gettext";
else
$func2 = preg_replace("/_/", "-", $func);
echo "<a href=\"$manref.$func2.php\">$func</a><br>\n";
}
}
}
?>
I've written simple XML-RPC server which automatically registers all defined functions starting with "RPC_" prefix and found, that with PHP 2.4.3 on Win32 and Linux platforms function names are in lowercase so the xmlrpc_server_call_method() is case sensitive which is correct with XML, but not with PHP and get_functions_defined()
I also suggest changing the function to have flags/options to return internal, user or both functions only and starting with prefix such as:
<?php
// constants
define( 'xxx_INTERNAL', 0x1 );
define( 'xxx_USER', 0x2 );
define( 'xxx_BOTH', 0x3 );
// declaration
array get_functions_defined( int options, string prefix );
?>
with both arguments optional.
Johnnie
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.
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>
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