[Resolved] How can this JavaScript effect be done with PHP?

Jason_Batten

Hey all,

http://javascript.internet.com/forms/dropdown-box-population.html

Click the link, follow the white rabbit and you will see the common drop-down selection change thingy with JavaScript.

Does anyone know a simplish way of doing the same effect with PHP? I gather at least the onchange function with need to be used.

Cheers for advice 😃

RossC0

Hi,

Yes this can easily be done via:

1) DHTML - load all the options and use javascript to hide / replace select boxes or the select box values.

2) Dynamically using XMLHttpRequest - again using javascript to call a page and return the drop down values.

Jason_Batten

What about in PHP 😉

Do you have any examples? I know nothing about DHTML :bemused:

Do you think using arrays some-how would pull this off? 😕

RossC0

Hi,

PHP would be used to load the data - for the select boxes but javascript would be needed to hide / show items on the page!

just google for dhtml. You will need to learn javascript to do it.

The to hide an element just use:

document.getElementById('the_elements_id ').style.display = 'none';

Jason_Batten

Ah screw it! I'll just use JavaScript :bemused:

Jason_Batten

NO! Screw JavaScript I just worked out how to do it... in theory :o

Will post the example concept/code when I am done 😃

RossC0

Hi,

Well PHP is a server side language and javascript it client side. So the only way you will be able to achieve the same effect using php alone is by posting the form - each time the user selects an option -- even then you will need javascript to fire the form posting!

DHTML (javascript and HTML) mean that it is not necessary to have extra server calls - in the example all the data is loaded in one go - so there is only one server call.

Jason_Batten

http://www.plus2net.com/php_tutorial/php_drop_down_list.php

Found a way of doing it 😃 but I think the onChange form submit would be better. I will fool around with it and make a similiar version.