PHP required field validation

[rEhSi_123]

Hello Everbody 

 

I am have php website in which I have decided to add Testimonial section where visitors can leave feedbacks...etc....

 

Everything seems to be working fine where I am able to enter the data into the MySQL database.

 

Anyways, basically I am trying to add a required field validator in order to prevent an empty form to be submitted into the database i.e. blank fields.

 

I googled the above topic where I have come across Javascript validators ...etc but I want to stay away from it because of very less experience and since there is a possibility of browers with no javascript support.

 

I have also tried the below:

 

if ($_POST['name']=="") {
Print("Please fill in all fields!<br>");
}
elseif ($_POST['email']=="")
{
Print("Please fill in all fields!!<br>");
}
elseif ($_POST['comment']=="")
{
Print("Please fill in all fields!!!<br>");
}
else
{
echo "Successful";
echo "<BR>";
echo "<a href='viewguestbook.php'>View guestbook</a>"; 
}

 

Where it displays a error message if the field is empty but blank data is still entered into the database

 

Any suggestions please advice!

[rille95]

if a field is empty you need to make the script to die(); or exit;

[mikesta707]

you have to exit() after one of the validation ifs or the script will just spit out the error message, but keep running.

for example

if ($_POST['name']=="") {
Print("Please fill in all fields!<br>");
exit();
}

 

you can also have the query execute in the else statement if you dont want to use exit

[rEhSi_123]

if a field is empty you need to make the script to die(); or exit;

you have to exit() after one of the validation ifs or the script will just spit out the error message, but keep running.

for example

if ($_POST['name']=="") {
Print("Please fill in all fields!<br>");
exit();
}

 

 

Thanks rille95 and mikesta707 for the correction as I should have know this.....

 

Also mikesta707 what do you mean by this 'you can also have the query execute in the else statement if you dont want to use exit' sorry 

 

[mikesta707]

if ($_POST['name']=="") {
Print("Please fill in all fields!<br>");
}
elseif ($_POST['email']=="")
{
Print("Please fill in all fields!!<br>");
}
elseif ($_POST['comment']=="")
{
Print("Please fill in all fields!!!<br>");
}
else
{
//do the query here
//then output the stuff below
echo "Successful";
echo "<BR>";
echo "<a href='viewguestbook.php'>View guestbook</a>";
}