Backend Development
PHP Tutorial
Introduction to php disabled function settings and viewing methods (with examples)
Introduction to php disabled function settings and viewing methods (with examples)
This article brings you an introduction to the setting and viewing methods of PHP disabled functions (with examples). It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
This article mainly introduces the setting and viewing methods of disabled functions in PHP. It analyzes the methods of disabling functions in PHP and uses PHP probes to view disabled function information in the form of examples. Friends in need can refer to the following
The example in this article describes the setting and viewing methods of PHP disabled functions. Share it with everyone for your reference. The details are as follows:
Open PHP.INI and find this line:
disable_functions =
Add the function to be disabled at the end, such as To disable multiple functions, use half-width commas, separated by
Give an example:
disable_functions = passthru,exec,system,popen,chroot,scandir,chgrp,chown,escapesh ellcmd,escapeshellarg,shell_exec,proc_open,proc_get_status
Recommended functions to be disabled on the host:
disable_functions = system,exec,shell_exec,passthru,proc_open,proc_close, proc_get_status,checkdnsrr,getmxrr,getservbyname,getservbyport, syslog,popen,show_source,highlight_file,dl,socket_listen,socket_create,socket_bind,socket_accept, socket_connect, stream_socket_server, stream_socket_accept,stream_socket_client,ftp_connect, ftp_login,ftp_pasv,ftp_get,sys_getloadavg,disk_total_space, disk_free_space,posix_ctermid,posix_get_last_error,posix_getcwd, posix_getegid,posix_geteuid,posix_getgid, posix_getgrgid,posix_getgrnam,posix_getgroups,posix_getlogin,posix_getpgid,posix_getpgrp,posix_getpid, posix_getppid,posix_getpwnam,posix_getpwuid, posix_getrlimit, posix_getsid,posix_getuid,posix_isatty, posix_kill,posix_mkfifo,posix_setegid,posix_seteuid,posix_setgid, posix_setpgid,posix_setsid,posix_setuid,posix_strerror,posix_times,posix_ttyname,posix_uname
How to check the list of disabled functions on the host, I found a very good probe from the Internet
<?php
header("content-Type: text/html; charset=utf-8");
header("Cache-Control: no-cache, must-revalidate");
header("Pragma: no-cache");
error_reporting(0);
ob_end_flush();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Pragma" content="No-cache" />
<meta http-equiv="Expires" content="0" />
<meta http-equiv="cache-control" content="private" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />//加了这句，看看能不能解决linux下显示乱码的问题？
<title>PHP 探针 v1.0</title>
<style type="text/css">
<!--
body{text-align:center;margin-top:20px;background-color:#a9b674;}
#overview{width:700px;margin:0 auto;text-align:left;}
a{text-decoration:underline;color:#992700;}
.strong{color:#992700;}
.basew{width:300px;}
-->
</style>
</head>
<body>
<div id="overview">
<div id="copyright">版权信息
<a href="hello.php?typ=baseinfo">[基本信息]</a> <a href="hello.php?typ=superinfo">[高级信息]</a>
<?php
if (function_exists("phpinfo")){
echo'<a href="hello.php?typ=phpinfo">[phpinfo]</a>';}
echo'<br />php探针v1.0 by MKDuse(blueidea-id)<br /><br />此程序代码，可免费使用；但不得用于商业用途；完全转载或使用此代码，请保留版权信息；<br />欢迎指正错误提建议，QQ：122712355</div>';
if (empty($_GET['typ'])){
baseinfo();}
else{
switch ($_GET['typ']){
case 'phpinfo':
phpinfoview();
break;
case 'superinfo':
superinfo();
break;
case 'baseinfo':
baseinfo();
break;
default:
baseinfo();}
}
function getime()
{
$t = gettimeofday();
return (float)($t['sec'] + $t['usec']/1000000);
}
function baseinfo(){
echo '<h1>基本信息</h1>';
$arr[]=array("Current PHP version:",phpversion());
$arr[]=array("Zend engine version:",zend_version());
$arr[]=array("服务器版本",$_SERVER['SERVER_SOFTWARE']);
$arr[]=array("ip地址",$_SERVER['REMOTE_HOST']);//ip
$arr[]=array("域名",$_SERVER['HTTP_HOST']);
$arr[]=array("协议端口",$_SERVER['SERVER_PROTOCOL'].' '.$_SERVER['SERVER_PORT']);
$arr[]=array("站点根目录",$_SERVER['PATH_TRANSLATED']);
$arr[]=array("服务器时间",date('Y年m月d日,H:i:s,D'));
$arr[]=array("当前用户",get_current_user());
$arr[]=array("操作系统",php_uname('s').php_uname('r').php_uname('v'));
$arr[]=array("include_path",ini_get('include_path'));
$arr[]=array("Server API",php_sapi_name());
$arr[]=array("error_reporting level",ini_get("display_errors"));
$arr[]=array("POST提交限制",ini_get('post_max_size'));
$arr[]=array("upload_max_filesize",ini_get('upload_max_filesize'));
$arr[]=array("脚本超时时间",ini_get('max_execution_time').'秒');
if (ini_get("safe_mode")==0){
$arr[]=array("PHP安全模式(Safe_mode)",'off');}
else{
$arr[]=array("PHP安全模式(Safe_mode)",'on');}
if (function_exists('memory_get_usage')){
$arr[]=array("memory_get_usage",ini_get('memory_get_usage'));}
//$arr[]=array("可用空间",intval(diskfreespace('/')/(1024 * 1024))."M");
echo'<table>';
for($i=0;$i<count($arr);$i++)
{
$overview='<tr><td class="basew">'.$arr[$i][0].'</td><td>'.$arr[$i][1].'</td></tr>';
echo $overview;
}
echo'</table>';
echo '<h2>服务器性能测试</h2>';
echo'<table><tr><td>服务器</td><td>整数运算<br />50万次加法(1+1)</td><td>浮点运算<br />50万次平方根(3.14开方)</td></tr>';
echo'<tr><td>MKDuse的机子(P4 1.5G 256DDR winxp sp2)</td><td>465.08ms</td><td>466.66ms</td></tr>';
$time_start=getime();
for($i=0;$i<=500000;$i++);
{$count=1+1;}
$timea=round((getime()-$time_start)*1000,2);
echo '<tr class="strong"><td>当前服务器</td><td>'.$timea.'ms</td>';
$time_start=getime();
for($i=0;$i<=500000;$i++);
{sqrt(3.14);}
$timea=round((getime()-$time_start)*1000,2);
echo '<td>'.$timea.'ms</td></tr></table>';
?>
<script language="javascript" type="text/javascript">
function gettime()
{
var time;
time=new Date();
return time.getTime();
}
start_time=gettime();
</script>
<?php
echo '<h2>带宽测试</h2>';
for ($i=0;$i<100;$i++){
print "<!--1234567890#########0#########0#########0#########0#########0#########0#########0#########012345-->";}
?>
<p id="dk"></p>
<script language="javascript" type='text/javascript'>
var timea;
var netspeed;
timea=gettime()-start_time;
netspeed=Math.round(10/timea*1000);
document.getElementByIdx("dk").innerHTML="向客户端发送10KB数据，耗时"+timea+"ms<br />您与此服务器的连接速度为"+netspeed+"kb/s";
</script>
<?php
echo'<h2>已加载的扩展库(enable)</h2><div>';
$arr =get_loaded_extensions();
foreach($arr as $value){
echo $value.'<br />';}
echo'</div><h2>禁用的函数</h2><p>';
$disfun=ini_get('disable_functions');
if (empty($disfun)){
echo'没有禁用</p>';}
else{
echo ini_get('disable_functions').'</p>';}
}//关闭
function superinfo(){
echo'<h1>高级信息</h1><p>PHP_INI_USER 1 配置选项可用在用户的 PHP 脚本或Windows 注册表中<br> PHP_INI_PERDIR 2 配置选项可在 php.ini, .htaccess 或 httpd.conf 中设置 <br>PHP_INI_SYSTEM 4 配置选项可在 php.ini or httpd.conf 中设置 <br>PHP_INI_ALL 7 配置选项可在各处设置</p>';
$arr1=ini_get_all();
for ($i=0;$i<count($arr1);$i++)
{
$arr2=array_slice($arr1,$i,1);
print_r($arr2);
echo '<br />';
}
}
function phpinfoview(){
phpinfo();
}
?>
</div>
</body>
</html>The above is the detailed content of Introduction to php disabled function settings and viewing methods (with examples). For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian
Dec 24, 2024 pm 04:42 PM
PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati
7 PHP Functions I Regret I Didn't Know Before
Nov 13, 2024 am 09:42 AM
If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op
How To Set Up Visual Studio Code (VS Code) for PHP Development
Dec 20, 2024 am 11:31 AM
Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c
Explain JSON Web Tokens (JWT) and their use case in PHP APIs.
Apr 05, 2025 am 12:04 AM
JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,
PHP Program to Count Vowels in a String
Feb 07, 2025 pm 12:12 PM
A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total
How do you parse and process HTML/XML in PHP?
Feb 07, 2025 am 11:57 AM
This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an
Explain late static binding in PHP (static::).
Apr 03, 2025 am 12:04 AM
Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.
What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases?
Apr 03, 2025 am 12:03 AM
What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.
