$global_assign
全局配置变量

This is a list of variables that are always implicitly assigned to the template engine. This is handy for making global variables or server variables available to all templates without having to manually assign them. Each element in the $global_assign should be either a name of the global variable, or a key/value pair, where the key is the name of the global array and the value is the array of variables to be assigned from that global array. $SCRIPT_NAME is globally assigned by default from $HTTP_SERVER_VARS.
定义一组总是隐式地作用于模板引擎的变量列表。这对于使全局变量或服务器变量可用于所有模板是很方便的，因为无需手工配置它们。在全局配置中的每一元素应当要么是一全局变量的名字，要么是一键/值对（键是全局数组名，值是对应该全局数组的变量数组）。$SCRIPT_NAME变量默认属于$HTTP_SERVER_VARS数组。