ThinkPHP
ThinkPHP模板中的switch标签用于在模板中根据不同情况输出不同的值。
ThinkPHP模板引擎支持switch判断,可根据不同条件输出不同的结果,使用格式如下:
<switch name="变量名" > <case value="值1">输出内容1</case> <case value="值2">输出内容2</case> <default />默认情况 </switch>
用法举例如下:
<switch name="uid"> <case value="1">管理员</case> <default />游客 </switch>
此处注意:
name属性可以使用函数以及系统变量,其属性值为变量名称,没有$符号,而value值使用变量时需要带$符号,如上面的例子所示。
而value的值在使用变量方式的情况下,不再支持多个条件的同时判断,如下面多条件判断。
多条件判断:
case 的 value 属性可以支持多个条件的同时判断,使用 | 符号进行分割:
<switch name="Think.get.type"> <case value="gif|png|jpeg">图像格式文件</case> <default />其他格式文件 </switch>
此处表示如果$_GET["type"]的值是gif、png或者jpg的话,就判断为图像格式。
name属性还可以是系统变量,并且可以使用函数,如:
<switch name="Think.get.username|function1"> ...... </switch>

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