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PHP表单 #12

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suhao opened this issue May 16, 2022 · 0 comments
Open

PHP表单 #12

suhao opened this issue May 16, 2022 · 0 comments

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@suhao
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suhao commented May 16, 2022

HTML表单是前后端数据交互的很重要的一部分，PHP能把来自HTML页面的表单元素自动变成可供PHP脚本使用的数据。$_GET和$_POST变量用于检索表单中的信息，如用户的输入

$_GET

$_GET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，任何人都是可见的，在地址栏中以键值对形式传递给后端

$_POST

$_POST用于收集来自method=post的表单数据，从POST方法发送的信息对用户来讲是不可见的，对发送的信息量也没有限制。POST方法默认发送的信息量最大为8MB，可以通过php.ini中的post_max_size更改

$_REQUEST

$_REQUEST包含了$_GET、$_POST和$_COOKIE的内容
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@suhao