Check if username already taken during registration PHP

Perform check without submitting form (using Ajax): goo.gl/aRZYcJ
In this tutorial, we perform a check each time a user is registering an account to ensure that another user hasn't already used the provided username or email to register on the site. If that username is already taken, the appropriate error messages are displayed to the user and he is asked to try another username.

[@koenlaermans1963]

21 minutes of silence.

[@ArshiAli789]

you are just awesome in coding

[@msaleh9407]

thank u very much dear

[@rigobertsamo8147]

Hi Awa Melvine I just want to say that the demonstration is awsome! when watching the video how do youthink of the process to someone who would to copy it Awa? That't just what i'am thinking

[@aqeelahmad586]

Well done

[@troy0mhf0hunter]

thx

[@Nova-uo3fp]

It's work for me . Thank you :)

[@guguchugu4593]

love from india

[@corneliusucheilozue7267]

How can I integrate this code with Admin and user login in php and mysql database lesson

[@arshpreetkaur3032]

hii , i have created a plugin . everything has done properly except that validation in database. i have confused where i added code of validation like in insert data file or another place. could you help me

[@amolshelke9651]

shwing such warning not giving output "Warning: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in C:\xampp\htdocs
ame_taken\process.php on line 15"

[@clarkwainemarasigan6466]

it is unidentified variable in my form

[@faizsuhaimi13]

hi...can u answer my question asap..why i got error said undefined variable $res_u ?

[@rendelbrigino121]

do you have a video of creating a login form?

[@AwaMelvine]

Yes, I do. You can find it here: ruclips.net/video/C--mu07uhQw/видео.html

[@rendelbrigino121]

@@AwaMelvine oh thanks

[@weiredaf2568]

Warning: mysql_num_rows() expects parameter 1 to be resource ?

[@abdoulayebamba5866]

use mysqli_num_rows() instead it'll work!

[@notyourtype6551]

What dbase app are you using?please need help

[@AwaMelvine]

I am using PHPMyadmin

[@rustytovera4303]

its not working in modal?

[@rigobertsamo8147]

where is the website page?

[@AwaMelvine]

Hi Rigobert Samo, I provided a link to the version of the video that does the check without submitting the form or reloading the page. It is in the description section of the video. I don't understand the website page you are referring to. Please elaborate so that I can try and help.
Thanks for watching!

[@asadzayn4025]

Where is dwunload file link