mysql - HTML and PHP Database Connectivity -

-

i using code. insert name , rollno in table named 'tablename' in database 'dbname'.

db.php

<html>     <body>         <form name="db" action="db.php" method=post>             enter name <input type=text name="nam"/><br><br>             enter rollno. <input type=text name="rno"/><br><br>             <input type=submit value="click me"/>         </form>  <?php $nam = $_post['nam']; $rno = $_post['rno']; mysql_connect('localhost','root','') or die(mysql_error()); mysql_select_db('dbname') or die(mysql_error()); $sql="insert tablename values('$nam','$rno')";  mysql_query($sql); ?> </body> </html>

it show error, that
notice: undefined index: nam in c:\wamp\www\db connectivity\db.php on line 10
notice: undefined index: rno in c:\wamp\www\db connectivity\db.php on line 11

plz give solution, how use html , php in same page without error.

you're not checking if form submitted or not give name submit element & have check using isset,

    <input type=submit name="submit" value="click me"/>     </form>  <?php if(isset($_post['submit'])){      $nam = isset($_post['nam']) ? $_post['nam'] : '';      $rno = isset($_post['rno']) ? $_post['rno'] : '';      //and rest of php operation need perform after submit. ?>

warning: please, don't use mysql_* functions in new code. no longer maintained and officially deprecated. see red box? learn prepared statements instead, , use pdo or mysqli - this article decide which. if choose pdo, here tutorial.


Comments

Post a Comment

Popular posts from this blog

java - WrongTypeOfReturnValue exception thrown when unit testing using mockito -

-
my test list<person> mylist; @test public void testisvalidperson() { mylist = new arraylist<person>(); mylist.add(new person("tom")); when(persondao.get(person)).thenreturn(mylist); when((persondao.get(person)).isempty()).thenreturn(false);//------exception thrown boolean result = service.isvalid("tom"); assertfalse(result); } method tested: public boolean isvalid(string person){ persondao = new persondao(); person personobj = new person(person); return (persondao.get(person).isempty())?false : true; } exception thrown: org.mockito.exceptions.misusing.wrongtypeofreturnvalue: boolean cannot returned get() get() should return list *** if you're unsure why you're getting above error read on. due nature of syntax above problem might occur because: 1. exception *might* occur in wrongly written multi-threaded tests. please refer mockito faq on limitations of concurrency testing. 2. sp
Read more

php - Magento - Deleted Base url key -

-
i working on cleaning url: http://mydomain.com/shop/shop/deals i going through settings in configuration tab in admin panel on magento , change secure , unsecure base urls remove first base url "shop" web page read: http://mydomain.com/shop/deals so changed unsecure base urls mydomain.com/shop mydomain.com , secure 12.345.67.89/shop 12.345.67.89. wrong thing do. i cannot reload page or admin console. how access these files through ftp , change correctly there?? when make changes in admin panel changes made in database not in file. have make changes in database. 1.go database , select core_config_data table under table find web/unsecure/base_url , web/secure/base_url . make changes here. don't forget clear cache in var/cache folder
Read more

android - How to disable Button if EditText is empty ? -

-
i have edittext , button in application. when button clicked,the text entered in edittext added listview. i want disable button if edittext empty.how ? this code button click imagebutton imb=(imagebutton)findviewbyid(r.id.btn_send); imb.setonclicklistener(new onclicklistener() { @override public void onclick(view arg0) { edittext et = (edittext)findviewbyid(r.id.edittext1); string str = et.gettext().tostring(); web1.add(str); toast.maketext(shoutsingleprogram.this, "you entered...."+str, toast.length_short).show(); adapter1.notifydatasetchanged(); et.settext(""); } }); } how can ? edittext1.addtextchangedlistener(new textwatcher() { @override public void ontextchanged(charsequence s, int start, int before, in
Read more