在安装Ecshop的时候，遇到两个⚠️问题：

Strict Standards: Non-static method cls_image::gd_version() should not be called statically in /install/includes/lib_installer.php on line 31

Strict Standards: Non-static method cls_image::gd_version() should not be called statically in /install/includes/lib_installer.php on line 31

原因：
PHP升级到5.4X以后的兼容性语法问题

解决：
找到install/includes/lib_installer.php中的第31行 return cls_image::gd_version();
然后在找到include/cls_image.php中的678行，发现gd_version()方法未声明静态static，所以会出错。这时候只要： 　　

1）将function gd_version()改成static function gd_version()即可。

2）或者将install/includes/lib_installer.php中的第31行return cls_image::gd_version();改成：

$p = new cls_image();

return $p->gd_version();

　　http://www.cnblogs.com/thinksasa/archive/2013/03/12/2955922.html

http://www.zoneself.org/2014/08/04/content_2691.html

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