Analyzing Zephir and writing PHP extensions (1)

This article introduces to you "Analysis of Zephir to write PHP extensions (1)". It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.

It is well known that to write PHP extensions, you need to use c or c language with ext_skel to implement

This is very unfriendly to a PHPer who has not been exposed to c, so there is The slogan of Zephir

zephir is: if you can write php, you can write phpExtension

To build PHP extension And to use Zephir, the following requirements need to be met:

• Zephir parser >= 1.3.0
• A C compiler, such as gcc
• re2c 0.13.6 or higher
• PHP development headers and tools For linux-based systems, you also need:
• GNU make 3.81 or later
• autoconf 2.31 or later
• automake 1.14 or later
• libpcre3

After all the compilation and installation of PHP, you still need to install some dependencies

yum install git gcc make re2c php php-json php-dev libpcre3-dev build-essential

First install the interpreter

https://github.com/phalcon/php -zephir-parser

git clone git://github.com/phalcon/php-zephir-parser.git

cd php-zephir-parser

phpize

./configure

make

re2c## is not installed

#Manual installation

wget

http://sourceforge.net/projects/re2c/files/0.16/re2c -0.16.tar.gz## tar zvxf re2c-0.16.tar.gz cd re2c-0.16 ./configure && make && make install

tar zvxf re2c-0.16.tar.gz

cd re2c-0.16 ./configure && make && make install

#sudo make install

Then edit the ini and add

extension=zephir_parser.so

Install zephir.phar

wget https://github.com/zephir-lang/zephir/releases/download/0.13.0-alpha- 1/zephir.pha

Installation successful

After installing Zephir, you can proceed to the coding stage

I want to implement an array_where extension Method to implement array filtering

$array = [];
$array[0]['name'] = 'zhangsan';
$array[0]['chinese'] = '89';
$array[0]['math'] = '95';
$array[0]['english'] = '88';
$array[1]['name'] = 'lisi';
$array[1]['chinese'] = '91';
$array[1]['math'] = '86';
$array[1]['english'] = '90';
$where=array(
        array('k'=>'name','conditions'=>'=','v'=>'zhangsan'),
        array('k'=>'chinese','conditions'=>'>','v'=>'86'))
$new_array = array_where(array,$where);
var_dump($new_array);

is similar to multi-condition query filtering in mysql.

If you use the native PHP writing method, it is a loop foreach, which is very inefficient.

▏This article was published on the PHP Chinese website with the consent of the original author PHP Cui Xuefeng. The original address: https://zhuanlan .zhihu.com/p/352504439

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