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Home Backend Development PHP Tutorial ThinkPHP的模版中什么时候需要在方法前加冒号,什么时候不需要加?

ThinkPHP的模版中什么时候需要在方法前加冒号,什么时候不需要加?

Jun 06, 2016 pm 08:21 PM
php thinkphp

比如,我在导航中想链接到首页:
写成这样:"{U('Index/Index')}"
不能正确链接到首页。
写成这样才行:"{:U('Index/Index')}"
(即U方法前加了冒号)

但是,我在另一个地方,一个form表单中:


U方法前加不加冒号都没有问题!

为什么会这样?

回复内容:

比如,我在导航中想链接到首页:
写成这样:"{U('Index/Index')}"
不能正确链接到首页。
写成这样才行:"{:U('Index/Index')}"
(即U方法前加了冒号)

但是,我在另一个地方,一个form表单中:


U方法前加不加冒号都没有问题!

为什么会这样?

1、 U() 是ThinkPHP中生成URL的函数
2、 在模板中,使用 {:U('home/index')} 这种方式意为: <?php echo :U('home/index') ?>
3、 如果仅仅是写 {U('home/index')} 应该是会被理解为无效的(也有可能是执行了但没有echo),没有具体测试过;而LZ说的在form中加不加冒号都没有问题可能是因为这样写无效,没有输出任何东西,所以就变成了 <form ... action=""></form>,而在form标记中,action为空是默认提交到当前页面的。 so ..

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