Simple signup form validation using Object Oriented PHP + source code | Quick Programming Tutorial

Lets validate a signup form using object oriented (OOP) PHP
#OOP #PHP #VALIDATE

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[claytontill]

I learn PHP so fast because you thank so much

[AndrewKwabula]

I have been using MySQL with PHP for years but have always avoided PDO. This time it was inevitable, I could no longer avoid it. Man, your tutorial got me up to speed and now I am doing even more sophisticated PDO queries.

[miguelpereira]

Hello. Thanks for sharing your knowledge with Us, and source code as well. Greetings from Venezuela

[projectnetwork]

thank you, i learned a lot of information from this lesson

[flax]

Next time I suggest using stylesheet instead of putting all in one index file

[aymanalredi]

Hi sir, thank you for this tutorial 🙂
How to disable form resubmission especially when clicking back in browser?

[MateableCoin]

Could you add two passwords one to confrim?

[Saboor-Hamedi]

That is nice
Before inserting data I want to check for duplicate data, but I always get return 1 which is true,

$duplicate = $this->db->query('SELECT COUNT(*) FROM guest_login WHERE email = "' . $post["guest_email"] . '"
OR guest_id = "' . $post["guest_mainid"] . '" ');
$num_rows = mysqli_num_rows($duplicate);

if ($num_rows <= 0) {

}

It suppose to work, but it doesn't