PHP 5.6版本有哪些具体功能和优化？

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返回值（语法）+ Nginx、php5.6+ 中+ 打开网站首页，显示：+ A PHP Error was encountered+ Severity: Notice+ Message: Only variable references should be returned by reference+ Filename: core/Common.php+ Line Number: 257+ 解决方法：+ 修改配置或代码

返回值(语法)

Nginx、php5.6+ 中 打开⽹网站⾸首⻚页，显示:

A PHP Error was encountered Severity: Notice Message: Only variable references should be returned by reference Filename: core/Common.php Line Number: 257

解决⽅方法:打开 system/core/Common.php

// 将 return $_config[0] =& $config; // 修改为 $_config[0] =& $config; return $_config[0];

修改php.ini

打开 /private/etc/ ⽬目录

如果没有 php.ini ，则根据 php.ini.default 创建⼀一个

sudo cp /private/etc/php.ini.default /private/etc/php.ini

修改为:

# 注释去掉，重启php-fpm session_path='/tmp' # 在php7中只有这个 session.save_path = "/tmp"

MySQL驱动错误

出现如下问题:(php.ini配置导致)

A PHP Error was encountered Severity: Warning Message: mysqli::real_connect(): (HY000/2002): No such file or directory Filename: mysqli/mysqli_driver.php

网友:默认以下配置为空:

# 将以下三个选项设置成你mysql.sock对应的⽬目录就可以解决了了 mysql.default_socket = /tmp/mysql.sock pdo_mysql.default_socket= /tmp/mysql.sock mysqli.default_socket =/tmp/mysql.sock