#php extension

How to Enable IonCube Loader in cPanel PHP Extension

IonCube Loader is a free PHP extension uses to decode encrypted PHP files at runtime. If you want to use IonCube Loader for your PHP application or website, you must enable it in your cPanel PHP extension using Cloudlinux Selector. Let’s see how to enable IonCube Loader in cPanel PHP Extension. Step 1: Login to your cPanel account Step 2: Navigate to the Software section and click Select PHP…

PHP is an open-source language where codes are executed at the server-side by a PHP interpreter, which is why it is also called a Server-side programming language. On the server-side or web server, the output of the PHP interpreter or inputted codes may be of HTML or binary data. And this would be an HTTP response or a part of it.

If you're writing a PHP extension that must call php functions by users, there is a special case that is not well documented that you should be aware of.

If the function you call to encounters a fatal error in PHP-land, execution will never return to your extension.

You'll leak memory and valgrind will pick up on that and everything will be terrible and blah, blah, blah.

The good news? If PHP encounters a fatal error (i.e. Fatal error: Call to undefined function ifsetor()), PHP immediately will try to exit after logging the error, or execute a user-provided shutdown function if one is registered, then exit. So you don't really need to worry about the memory leak. The OS should clean it up once the PHP process exits.

There are a couple odd defaults in the Makefile that phpize+configure generate for you that you may want to modify while developing and debugging.

By default, extensions compile with -O2. This can lead to tools like valgrind and gdb getting confused about what line number correlates to what section of the binary. It’s located under CFLAGS and can just be deleted when you need a debug build.

You can enable valgrind to run on your extension by adding the -m flag to the run-tests.php invocation in the test: section of the Makefile.

关于Zephir需要简单介绍一下: Zephir 是为PHP开发人员提供的能够编写可编译/静态类型的高级语言.是优秀的Phalcon团队为开发第二版本框架所编写的新兴语言,其语法优雅,开发扩展非常方便,执行效率上据说是与C不分上下, 他的编译流程如下:Zephir -> C -> bin.

Zephir的目的是创建面向对象库或者框架, 所以它与Clang扩展不同, 不能编写非OOP的模块.

想了解更可以请访问官网: http://zephir-lang.com/

Zephir的安装

安装zephir的前提条件:

建立一个PHP扩展和使用Zephir需要以下要求:

   gcc >= 4.x/clang >= 3.x

   re2c 0.13 or later

   gnu make 3.81 or later

   autoconf 2.31 or later

   automake 1.14 or later

   libpcre3

   php development headers and tools

如果在使用ubuntu,可以这样安装包:

[php]

$ sudo apt-get update  

$ sudo apt-get install git gcc make re2c php5 php5-json php5-dev libpcre3-dev  (CentOS下是php-devel)

同时,确保你也安装了PHP开发库(PHP安装时):

[php]

$ phpize -v  

Configuring for:  

PHP Api Version:         20121113  

Zend Module Api No:      20121212  

目前Zephir编译器必须从Github克隆:

[php]

$ git clone https://github.com/phalcon/zephir  

运行Zephir安装程序(编译/创建解析器):

[php]

$ cd zephir  

$ ./install-json  

$ ./install -c  

MAC下安装前可能还需要安装automake:

使用Zephir开发扩展

我们要做的第一件事就是生成一个扩展框架,这将提供给我们扩展的基本结构 下面这个例子我们创建了一个名为"utils"的扩展:

[php]

$ zephir init utils  

之后,当前目录下就有一个"utils"目录了:

utils/

  ext/

  utils/

ext/ 目录下包含的是编译器生成扩展所需的代码(C源码).

utils/ 目录下是我们的Zephir源码.

我们需要切到工作目录下,也就是utils下,开始编写代码:

$ cd utils  

$ ls  

ext/ utils/ config.json  

其中的config.json,这个文件包含配置,可以用来改变Zephir的行为.

添加我们的第一个类:

[php]

// utils/utils/greeting.zep  

namespace Utils;  

class Greeting  

{  

   public static function say()  

   {  

       echo "hello world!";  

   }  

}  

现在,需要告诉Zephir把我们的项目编译成扩展,这一步要在项目目录下执行:

[php]

$ zephir build  

如果顺利会打印以下信息:

...

Extension installed!

Add extension=utils.so to your php.ini

Don't forget to restart your web server

初始测试:

$ php -m

[PHP Modules]

....

SPL

standard

tokenizer

utils

....

好的,我们用PHP来调用:

[php]

<?php  

echo Utils\Greeting::say(), "\n";  

# install dependencies

sudo yum install curl-devel

sudo yum install libxml2-devel

  # install extension for solr -- note use pear instead of pecl install

sudo pear install pecl/solr

  # when it asks for libcURL path if you are on a 64bit machine

# change: libcURL install prefix [/usr] : /usr/lib64 libxml2 install prefix [/usr] : /usr/lib64

  sudo chmod 755 /usr/lib64/php/modules/solr.so

  sudo vi /etc/php.d/solr.ini

# add:

extension=solr.so

  # restart apache