Basic php Login form with defined Name and Password -
i beginner in php programming . have been trying create basic login form fixed username , password in if loop , first time run program warning if-else loop cant figure out runs perfectly. want show error below submit when enter wrong password or username . cant figure out how .
<html> <head> <style> #login { position:absolute; top: 30%; bottom: 30%; left:30%; right:30%; margin: 0px auto; width:auto; height:600px; } </style> </head> <body> <?php echo"<center>"; echo"<div id=\"login\">"; echo"<form method=\"post\">"; echo"<b>username</b> <input type =\"text\" name=\"username\">"; echo"<br/><br/>"; echo"<b>password</b> <input type =\"password\" name=\"password\">"; echo"<br/><br/>"; echo"<input type=\"submit\" value=\"submit\">"; echo"</div>"; echo"</center>"; if($_post['username'] =="user" && $_post['password']=="user") { header("location: contact.php"); } else { // want display error when clicking submit } ?> </body> </html>
the first time run script, $_post['username'] (and password) isn't defined.
what have check if it's defined this:
if(isset($_post['username']) && $_post['username'] == "user" && isset($_post['password']) && $_post['password']=="user") also, check on top of page. because you'r sending content, redirect won't work.
header() must called before actual output sent, either normal html tags, blank lines in file, or php
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