1、安装wkhtmltox插件 # 1.1 wkhtmltox插件存放      /etc/apt/wkhtmltox/bin/     /etc/apt/wkhtmltox/include/ # 1.2 设置可执行权限     sudo chmod -R 777 /etc/apt/wkhtmltox/ 执行命令开始转换 shell_exec('/etc/apt/wkhtmltox/bin/wk