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PHP form form parameter passing details study_PHP tutorial

WBOYOriginal: 2016-07-21 15:45:44755browse

Why? Because there are two types of form processing: GET and POST, it has always been a very confusing question how to pass the do parameters in both forms and obtain them in the same way in the background. Today, after several hours of experimentation, I finally I understand, so I’m posting this.
GET form:

Copy code The code is as follows:

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

The form uses the GET method to transfer values

The value cannot be passed to action-get.php -->

="hkey" value="hvalue" />
hidden" name="do" value="index" /> value="Submit"/>
PHP for GET form:

Copy code

The code is as follows:

 </div><?php <BR> echo "The value of the parameter name is obtained through $_GET as ".$_GET["name"]." ,"; <BR> echo "The value of the parameter name is obtained through $_POST as ".$_POST["name"]. " ,"; <div class="codetitle"> echo "The value of parameter name is obtained through $_REQUEST as ".$_REQUEST["name"]." .rn"; <span style="CURSOR: pointer"  onclick="doCopy('code64873')"> echo "The value of parameter parm is obtained through $_GET as ".$ _GET["parm"]." ,"; <U> echo "The value of parameter parm is obtained through $_POST as ".$_POST["parm"]." ,"; </U> echo "The value of parameter parm is obtained through $ _REQUEST is obtained as ".$_REQUEST["parm"]." .rn"; </span> echo "The value of parameter hkey is obtained through $_GET as ".$_GET["hkey"]." ,"; </div> echo " "The value of parameter hkey is obtained through $_POST as ".$_POST["hkey"]." ,"; <div class="codebody" id="code64873"> echo "The value of parameter hkey is obtained through $_REQUEST as ".$_REQUEST["hkey"]." . rn"; <BR> echo "The value of parameter do is obtained through $_GET as ".$_GET["do"]." ,"; <BR> echo "The value of parameter do is obtained through $_POST as ".$_POST[ "do"]." ,"; <BR> echo "The value of parameter do is obtained through $_REQUEST as ".$_REQUEST["do"]." .rn"; <BR>?> <br></ pre><br><br><br><br>Processing result output: <br><br>The value of parameter name is obtained as kj through $_GET, the value of parameter name is obtained as kj through $_POST, and the value of parameter name is obtained through $_REQUEST is obtained as kj. <br>The value of parameter parm is obtained through $_GET, the value of parameter parm is obtained through $_POST, and the value of parameter parm is obtained through $_REQUEST. <br>The value of parameter hkey is obtained through $_GET is hvalue, the value of parameter hkey is obtained through $_POST, and the value of parameter hkey is obtained through $_REQUEST as hvalue. <br>The value of parameter do is obtained as index through $_GET, and the value of parameter do is obtained through $_POST, parameter do The value is obtained as index through $_REQUEST. <br><br>POST form: <br> <br><strong><br>Copy code </strong><br> The code is as follows: <br><div class="codebody" id="code42847">
<br><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" <BR>"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional .dtd"> <br><html xmlns="http://www.w3.org/1999/xhtml"> <br><head> <br> <meta http-equiv="Content- Type" content="text/html;charset=gbk"/> <br> <title>The form uses POST to pass values</title> <br></head> <br><body> <br> <!-- The parm and do parameters in action can be obtained through $_GET in action-post.php--> <br> <form action="action-post.php?parm=url- post&do=index" method="post"> <br>                                                                                                                                      Value--> <br>                                                                                                                                                                                                                                                       >                                                                                             > <br><br><br><br>Copy code<br><br> The code is as follows:<br><br>
</div><pre class="brush:php;toolbar:false"> <br><?php <STRONG> echo "parameter The value of name is obtained through $_GET as ".$_GET["name"]." ,"; </STRONG> echo "The value of parameter name is obtained through $_POST as ".$_POST["name"]." ,"; <BR> echo "The value of the parameter name is obtained through $_REQUEST as ".$_REQUEST["name"]." .rn"; <div class="codetitle"> echo "The value of the parameter parm is obtained through $_GET as ".$_GET["parm "]." ,"; <span style="CURSOR: pointer"  onclick="doCopy('code64873')"> echo "The value of parameter parm is obtained through $_POST as ".$_POST["parm"]." ,"; <U> echo "The value of parameter parm is obtained through $_REQUEST as" .$_REQUEST["parm"]." .rn"; </U> echo "The value of parameter hkey is obtained through $_GET as ".$_GET["hkey"]." ,"; </span> echo "The value of parameter hkey The value is obtained through $_POST as ".$_POST["hkey"]." ,"; </div> echo "The value of parameter hkey is obtained through $_REQUEST as ".$_REQUEST["hkey"]." .rn"; <div class="codebody" id="code64873"> echo "The value of the parameter do is obtained through $_GET as ".$_GET["do"]." ,"; <BR> echo "The value of the parameter do is obtained through $_POST as ".$_POST["do"] ." ,"; <BR> echo "The value of parameter do is obtained through $_REQUEST as ".$_REQUEST["do"]." .rn"; <BR>?> <br>

Processing result output:

The value of parameter name is obtained through $_GET, the value of parameter name is obtained as zkj through $_POST, and the value of parameter name is obtained through $_REQUEST. zkj.
The value of parameter parm is obtained as url-post through $_GET, the value of parameter parm is obtained as url-post through $_POST, and the value of parameter parm is obtained as url-post through $_REQUEST.
The value of parameter hkey is obtained through $ _GET is obtained as, the value of parameter hkey is obtained as hvalue through $_POST, and the value of parameter hkey is obtained as hvalue through $_REQUEST.
The value of parameter do is obtained as index through $_GET, and the value of parameter do is obtained through $_POST as, The value of the parameter do is obtained as index through $_REQUEST.
Conclusion:
The GET form value can be obtained through _GET; but the parameters set through the url parameter of the action cannot always be obtained
The POST form value can be obtained Obtained through _POST; but the parameters set through the url parameter of the action can be obtained through _GET
The same variables can be obtained through _GET, but they are set through hidden variables in the GET form, and through action in the POST form. url parameter settings
http://www.bkjia.com/PHPjc/320280.html

www.bkjia.com

true

http: //www.bkjia.com/PHPjc/320280.html

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Why? Because there are two types of form processing: GET and POST, it has been very confusing how to pass the do parameters in both forms and obtain them in the same way in the background...

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