谈谈PHP里的$_GET数组
在开发过程中,GET和POST像灵魂一样,无处不在。$_GET 变量是一个数组,内容是由 HTTP GET 方法发送的变量名称和值。
$_GET 变量用于收集来自 method="get" 的表单中的值。从带有 GET 方法的表单发送的信息,对任何人都是可见的(会显示在浏览器的地址栏),并且对发送的信息量也有限制(最多 100 个字符)。
在使用 $_GET 变量时,所有的变量名和值都会显示在 URL 中。所以在发送密码或其他敏感信息时,不应该使用这个方法。不过,正因为变量显示在 URL 中,因此可以在收藏夹中收藏该页面。在某些情况下,这是很有用的。
一般来说,URL会使用&操作符来隔开多个变量,当然你也可以设为其它符号。使用','这个符号为变量分隔符号,这里我们可以用两种方法来实现:
1. 修改php.ini
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2. 自己编写解释语法
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这个用法的优点在于,别人无法知道您传递的值是被谁使用,您自己需要明白各个值的使用。
针对http://www.bkjia.com/test.php?website=bkjia.com这一类的get方法的传值,其实方法与方法二相同,需要的是将key转换成value进行分解,我觉得这个方法比上一个方法要好,而且更加方便。
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你应该都已经获得到这些数据了。
遍历有多个元素的$_GET变量,可以使用下面的方法:
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也可以使用:
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关于$_REQUEST 变量,PHP 的 $_REQUEST 变量包含了 $_GET, $_POST 以及 $_COOKIE 的内容。PHP 的 $_REQUEST 变量可用来取得通过 GET 和 POST 方法发送的表单数据的结果。

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