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HomeBackend DevelopmentPHP TutorialThinkPHP模板Switch标签用法示例_PHP

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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