isset() not working properly on form
php
Solution
Try `!empty()` instead of `isset()`. This will evaluate to true only if there is something other than null, false, 0, or empty string ''. You probably have empty strings being submitted.
Problem
I have a registration form that user submits, data is sent using isset($_POST) to see if there is anything that was put into form input boxes. If not it is sent to an else which then sends it to a function that returns the user back to registration form to complete some missing forms. For some reason it is not working properly. Here is my checking code ------- ``` function returnBack(){ header("Location:register.php"); exit; } if(isset($_POST['myusername'])) { $myusername = $_POST['myusername']; } else { returnBack(); } if(isset($_POST['mypassword'])) { $mypassword=$_POST['mypassword']; } else{ returnBack(); } if(isset($_POST['myemail'])) { $myemail=$_POST['myemail']; } else{ returnBack(); } if(isset($_POST['myname'])) { $myname=$_POST['myname']; } else{ returnBack(); } if(isset($_POST['mylastname'])){ $mylastname=$_POST['mylastname']; } else{ returnBack(); } /////////////////////////////////////////////////////////////*******CONNECT TO SERVER ******************************************************************/ try { # MySQL with PDO_MYSQL $DBH = new PDO("mysql:host=$hostname;dbname=$database", $username, $password); $DBH->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION ); } catch(PDOException $e) { echo "I'm sorry, I'm afraid I can't do that."; file_put_contents('PDOErrors.txt', $e->getMessage(), FILE_APPEND); } ////////////////////////////////////////////////////////////***********INSERT REGISTER DATA INTO DB ***************************************************************/ //$encrypt_password = md5($mypassword); $insertdata = $DBH->prepare("INSERT INTO members (username, password, email, firstname, lastname ) VALUES ('$myusername','$mypassword','$myemail','$myname','$mylastname')"); $insertdata->execute(); echo "success"; $DBH = null; ``` Here is the form section ------------------------------ ``` <table width="300" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC"> <tr> <form name="register" method="post" action="insertnewmem.php"> <td> <table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFFF"> <tr> <td colspan="3"><strong>Registration Form </strong></td> </tr> <tr> <td width="78">Username</td> <td width="6">:</td> <td width="294"><input name="myusername" type="text" id="myusername" ></td> </tr> <tr> <td>Password</td> <td>:</td> <td><input name="mypassword" type="text" id="mypassword"></td> </tr> <tr> <td>Email</td> <td>:</td> <td><input name="myemail" type="text" id="myemail"></td> </tr> <tr> <td>First Name</td> <td>:</td> <td><input name="myname" type="text" id="myname"></td> </tr> <tr> <td>Last Name</td> <td>:</td> <td><input name="mylastname" type="text" id="mylastname"></td> </tr> <tr> <td> </td> <td> </td> <td><input type="submit" name="Submit" value="Register"></td> </tr> </table> </td> </form> </tr> </table> ``` UPDATED ---------------------------------------------- Sorry it skips the function returnBack() and just inserts it into db even if form not properly filled.