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How to implement table value transfer in php

(*-*)浩Original: 2019-09-29 15:38:492756browse

Explanation of the four ways to transfer values between PHP files

##POST value transfer

Post value is a method used for HTMLff9c23ada1bcecdd1a0fb5d5a0f18437 form jump, which is very convenient to use. For example: (Recommended learning:

PHP video tutorial)

<span style="font-size:18px;"><html>
<form action=&#39;&#39; method=&#39;&#39;>
<input type=&#39;text&#39; name=&#39;name1&#39;>
<input type=&#39;hidden&#39; name=&#39;name2&#39; value=&#39;value&#39;>
<input type=&#39;submit&#39; value=&#39;提交&#39;>
</form>
</html></span>

The action in the form is filled in with the url path of the jump page, and the method is filled in with the post method. After the submit button in the form is pressed, all the content with name in the form will be transferred to the filled in URL, which can be obtained through $_POST['name'], for example:

<span style="font-size:18px;"><?php
$a=$_POST[&#39;name1&#39;];
$b=$_POST[&#39;name2&#39;];
?></span>

here A very convenient tip. When selecting type as 'hidden' in the input tag, the input tag will be hidden and will not be displayed on the page. However, if the input tag is in the form and has a name value and a value value, it will also follow The submit button is passed, and this hidden label can pass some content that you don't want to display.

GET passed value

GET passed value is passed by following the url. When the page jumps, it jumps with the url. Commonly used in the use of 3499910bf9dac5ae3c52d5ede7383485 tags. For example:

<span style="font-size:18px;"><a href=&#39;xxx.php?id=value&#39;>点我跳转</a></span>

After jumping into xxx.php, you can get the passed value through $_GET['id']. The GET method is often used in URLs to delete or read a php file with a certain ID.

SESSION passing value

SESSION is a type of global variable, which is often used to save common data such as user ID after the user logs in. Once saved to SESSION, other pages can be obtained through SESSION. To use SESSION, you need to open the session:

<span style="font-size:18px;"><?php
//session赋值
session_start();
$_SESSION[&#39;one&#39;]=value1;
$_SESSION[&#39;two&#39;]=value2;
//session值的读取:
$one = $_SESSION[&#39;one&#39;];
//session值的销毁
unset($_SESSION[&#39;one&#39;]);
?></span>

Value passed by URL

Code example:

<span style="font-size:18px;"><!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<a href="http://localhost/wml/chuanzhi.php?name=wml&id=2">传值</a>
</body>
</html></span>

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