介绍Linux环境安装PHP7

# wget  http://php.net/get/php-7.0.2.tar.gz/from/a/mirror

# tar zxvf php-7.0.2.tar.gz# cd php-7.0.2

# ./configure   --help
# ./configure --prefix=/usr/local/php \
 --with-curl \ --with-freetype-dir \ --with-gd \ --with-gettext \ --with-iconv-dir \ --with-kerberos \ --with-libdir=lib64 \ --with-libxml-dir \ --with-mysqli \ --with-openssl \ --with-pcre-regex \ --with-pdo-mysql \ --with-pdo-sqlite \ --with-pear \ --with-png-dir \ --with-xmlrpc \ --with-xsl \ --with-zlib \ --enable-fpm \ --enable-bcmath \ --enable-libxml \ --enable-inline-optimization \ --enable-gd-native-ttf \ --enable-mbregex \ --enable-mbstring \ --enable-opcache \ --enable-pcntl \ --enable-shmop \ --enable-soap \ --enable-sockets \ --enable-sysvsem \ --enable-xml \ --enable-zip

# yum -y install libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 libxml2-devel MySQL pcre-devel

# yum -y install curl-devel# yum -y install libxslt-devel

# make &&  make install

# cp php.ini-development /usr/local/php/lib/php.ini# cp /usr/local/php/etc/php-fpm.conf.default /usr/local/php/etc/php-fpm.conf# cp /usr/local/php/etc/php-fpm.d/www.conf.default /usr/local/php/etc/php-fpm.d/www.conf# cp -R ./sapi/fpm/php-fpm /etc/init.d/php-fpm

#  /etc/init.d/php-fpm

<?php  //time /usr/local/php5/bin/php search_by_key.php  $a = array();  
    for($i=0;$i<600000;$i++){  
        $a[$i] = $i;  
        }  

    foreach($a as $i)  
    {  
        array_key_exists($i, $a);  
    }  
?>

PHP 5.4.44 版
[root@localhost www5.4.44]# time /usr/local/php5.4.44/bin/php search_by_key.phpreal    0m0.351s
user    0m0.300s
sys     0m0.050sPHP 5.5.28 版
[root@localhost www]# time /usr/local/php/bin/php search_by_key.phpreal    0m0.361s
user    0m0.304s
sys     0m0.057sPHP 7.0.0 版
[root@localhost www7]# time /usr/local/php7/bin/php search_by_key.phpreal    0m0.114s
user    0m0.097s
sys     0m0.017s

opcache.memory_consumption=128opcache.interned_strings_buffer=8opcache.max_accelerated_files=4000opcache.revalidate_freq=60opcache.fast_shutdown=1opcache.enable_cli=1

vim /usr/local/php7/etc/php.ini# 加入zend_extension=/usr/local/php7/lib/php/extensions/no-debug-non-zts-20141001/opcache.so

# killall php-fpm#  /etc/init.d/php-fpm