$default_modifiers 默认修正器变量

This is an array of modifiers to implicitly apply to every variable in a template. For example, to HTML-escape every variable by default, use array('escape:"htmlall"'); To make a variable exempt from default modifiers, pass the special "smarty" modifier with a parameter value of "nodefaults" modifier to it, such as {$var|smarty:nodefaults}.
这是一个修正器数组变量,这些修正器隐式地作用于模板中的每个变量.例如:针对HTML,用数组('escape:"htmlall"')默认地忽略每个变量;为了使一个变量免除于默认修正器,请将参数为"nodefaults"的特殊"smarty"修正器作用于它,例如:{$var|smarty:nodefaults}.