+ 4

How can i insert style css in php??

İ want to be apply class css on input tag in html that use the class in php...how can i use it in php??

20th Sep 2021, 4:46 AM

Sara012

22 ответов

+ 2

Sara012 oh easy to do. this is php guide for form validation. https://www.w3schools.com/php/php_form_validation.asp if received data is invalid, echo to client an image like red cross image or something like. if you want to echo same document but with changing style, place this in head tag : if(validate) echo '<link href="validate.css" rel="stylesheet"></link>' else echo '<link href="invalidate.css" rel="stylesheet"></link>'. but in reality users can't sent invalid data because we check it by Javascript. but hackers can send invalid data.

20th Sep 2021, 10:13 PM

Mehran

+ 3

As same as in simple html. within head tag <link rel="stylesheet" href="style.css">

20th Sep 2021, 5:06 AM

Shadoff

+ 3

You can divide you PHP file code into many parts! Like this: < php ? ?> <html> here put the head tag! </html> <php? ?>

20th Sep 2021, 5:29 AM

Shadoff

+ 3

Sara , can't get what you are talking about. What class, and how it related with input? if you want to style differently like day/night mode why don't you use JS for it? any way, you can change class of any container using PHP.

20th Sep 2021, 5:47 AM

Shadoff

+ 3

What exactly did the teacher ask of you?

20th Sep 2021, 7:16 PM

Mehran

+ 2

Sara012 this question is flawed. why you are trying to apply styles in server side?!! we do this in client side. usually.

20th Sep 2021, 3:27 PM

Mehran

+ 2

Validation form by php...but i have to insert style error input and style error image in php...