php7

目前项目用的php大多是php5.x, 最近看了本«php 7 programming cookbook», 尝试了下php7的一些新特性，考虑对以前的部分项目进行升级到php7, 在测试机上安装了下php7,尝试了下一些新特性。

install php7

./configure --prefix=/usr/local/php7 \
--with-config-file-path=/usr/local/php7/etc \
--with-mysqli=/usr/local/mysql/bin/mysql_config \
--with-mysql-sock=/var/lib/mysql/mysql.sock \
--with-pdo-mysql=/usr/local/mysql \
--with-gd --with-zlib --with-iconv -enable-zip --enable-pdo \
--enable-xml --with-openssl --with-curl --enable-bcmath \
--enable-ftp --enable-xml --with-openssl --with-curl \
--enable-bcmath --enable-ftp --enable-mbstring --enable-fpm \
--with-gd --enable-shmop \
--enable-sysvsem --enable-mbregex --enable-gd-native-ttf \
--enable-pcntl --enable-sockets --with-xmlrpc --enable-soap \
--without-pear --with-gettext --enable-session \
--with-jpeg-dir=/usr/lib --with-png-dir=/usr/lib \
--with-freetype-dir=/usr/lib

php7 version

/usr/local/php7/bin/php -v
PHP 7.1.3 (cli) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.1.0, Copyright (c) 1998-2017 Zend Technologies

strict_types

在脚本开头如果申明strict_types=1，就回对参数进行严格检查，如int传float会报错，不申明的话会 进行强制转换。 declare(strict_types=1);

测试用例

function add(int $a, int $b): int {
    return $a + $b;
}

$result = $_GET['key1'] ?? $_GET['key2'] ?? '';
var_dump($result);
$result = $_GET['key3'] ?? '';
var_dump($result);

var_dump(intdiv(10,3));
var_dump(intdiv(10,5));

define('MY_DATA', [
    'a',
    'b',
    'c'
]);

echo MY_DATA[1]; 

$class = new class(array('data'=>'class')) {

    public function __construct($data) {

        $this->data = $data;

    }

    public function __call($name, $params) {

        preg_match('/^(get|set)(.*?)$/i', $name, $matche);
        $prefix = $matche[1] ?? '';
        $suffix = $matche[2] ?? '';
        if($prefix && $suffix) {
            $prefix = strtolower($prefix);
            $suffix = strtolower($suffix);
            if($prefix == 'get') {
                return $this->$suffix ?? '';
            }
        }
        return '';
    }

};

var_dump($class->getData());

php7 vs php5.6 phpmyadmin测试

php5.6平均214ms php7平级188ms,快了近26ms,提速12%

网盘

参考