if isset post

In web development, preventing repeated submission is a practical and common problem. Besides, you can directly query the database to see if users submit the same data for filtering, we can also prevent such cases from being discovered when users

ThinkPHP unlimited classification principle to implement the message and reply function instance, thinkphp instance The message board program described in this article uses the principle of unlimited classification to enable unlimited messages and

The phpajax static paging process jumps Js end and judgment 1? Now-1: 1; break; case 'next': target = now + 1> allpage? Now: 1; break; case 'la': target = allpage> 0? Allpage: 1; break; case 'constans ': target = $ (' # selpage'). val ()> 0? $ ('#

1. The magic_quotes_gpc option in the php. ini configuration file of the php tutorial is not enabled and is set to off. 2. The developer does not check and escape the data type. But in fact, the second point is the most important. In my opinion, it

Author: spiderI also come to a super small PHP pony. Copy codeThe Code is as follows:Header ("content-Type: text/html; charset = gb2312 ");If (get_magic_quotes_gpc () foreach ($ _ POST as $ k => $ v) $ _ POST [$ k] = stripslashes ($ v );?>Save file

Example of php determining normal access and external access. Php judges normal access and external access and copies the code as follows :? Phpsession_start (); if (isset ($ _ POST [check])! Empty ($ _ POST [name]) {if ($ _ POST [check] $ _ SESSION

Mysql_query error. the username and password in my database are both MD5 encrypted. & lt ;? Phpsession_start (); require_once .. dataconfig. inc. php; get account password POST submit if (isset ($ _ POST [& quot; username & quot;]) {$ usernam

 Author: knife Affected Versions: 2.4.4Official Address: www.discuz.net Vulnerability Type: SQL Injection Plug-in: video tube less than 1.85 (only 1.85 tested) Vulnerability file: reportvideopopup. php Vid variable Filtering does not strictly

Code:###### [»] Author: Don Tukulesto (root@indonesiancoder.com)# [»] Date: November 23,200 9# [»] Homepage: http://www.indonesiancoder.com# [»] Method: Remote File Transfer sion# [»] Location: INDONESIA# [»] Vendor: http://www.phplivesupport.com/# [

How to determine the value of $ _ post 1. $ _ post? if(isset($_POST["username"])=""){echo"kong";}elseif(isset($_POST["username"])!="admin"){echo"kong";} Is the above statement correct? Reply to discussion (solution)

Form submission connection mysql data writing error for beginners, Parse error: syntax error, unexpected T_VARIABLE in C: \ AppServ \ www \ form_write_mysql \ add. php on line 7 Line 7 This is the sentence $ SQL = "insert into users (username, email)

Questions about isset in php if (isset ($ _ POST ['pass']) & isset ($ _ POST ['name']) & @ MD5 ($ _ POST ['pass']) = "admin" & @ $ _ POST ['name'] = "admin ") Why can't I enter the user name admin and password admin at the front end? If

Php processes two buttons in a form to determine whether the database exists (I need to press submir1 to determine whether the user exists, and press sunmir2 to determine whether the password exists) The following is the online search code, and the

Can I use the logical OR (|) operator like this? Can logic or operators be used like this? If (! Isset ($ _ POST ['username']) |! Isset ($ _ POST ['password']) |! Isset ($ _ POST ['verify _ PS']) |! Isset ($ _ POST ['email ']), of course. Can I use

I am a newbie to submit a form. All N forms must be submitted to the same page for data processing, that is, writing data to the database. Add. php & lt; formaction = & quot; adddate. php & quot; method = & quot; POST & quot; id = & quot; form1 &

Since I have been studying the xoops module for the past two days, I found this good module development quick start. After reading it, I came to the development module with great interest, but encountered some problems during the development process.

SSRF attack Overview Many Web applications provide the ability to retrieve data from other servers. With the URL specified by the user, the Web application can obtain images, download files, and read file content. If this function is maliciously

Where is the problem? ";} If (isset ($ _ POST ['c']) & isset ($ _ POST ['D']) {$ x =$ _ POST ['c']; $ y =$ _ POST ['D']; jisuan ($ x, $ y );} else echo "the result is 0! ";?> Always prompts that c and d are not defined. Why? Reply to

PHP complete calendar CLASS) The Code is as follows: Class Calendar {/** Www.php.net revised version*/Var $ YEAR, $ MONTH, $ DAY;Var $ WEEK = array ("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday ");Var $ _ MONTH =

1. Array Processing:1.1 create and initialize an array:1. The arrary () function creates an array. By default, element 0 is the first element of the array,The count () and sizeof () functions obtain the number of data elements.2. Use variables to