[SOLVED] Another Newbie question (Probably dumb)

[colinsp]

Is it possible to get the value of an HTML input box on a form and assign it to a php variable without having a submit button on the form? Something like an after update? Or is this something that would have to be done in Javascript / Ajax etc.

 

Sorry if this is a dumb question but I am trying to learn PHP by setting myself some challenges.

[MadTechie]

Well you need to remember that the form and data entered is client side (until its posted) and php is server side!..

 

So i would normally say yes via ajax BUT it the real question is what do you want to do ?

if you wish to run any PHP code without reloading the page then ajax is probably what you want.

[jackpf]

Well, if you wanted to achieve this without loading the page, then yes, you'd have to use ajax.

 

However, if you simply wanted a form without a submit button, you could use javascript to submit the forum once a user changes something. For example, something like onkeyup="parentNode.submit()"

 

Something like that anyway.

[colinsp]

Thanks for your responses.

 

I think that Ajax is a step too far for me at the moment I will make do with a submit button for now.

 

I will look into Ajax in the coming months to see how to do it.

 

Basically what I have is an input field that has its options populated from a query on a mysql database. When a user selects the option I want to perform a query on a second table and the result of this query is populated below it in a table as there will be multiple rows that match the selection.

 

Any way thanks for your help.

[MadTechie]

Okay when your ready you may want to check this it MAY help Dynamic DropDown PHP/AJAX

 

Topic Solved ?

[colinsp]

Thanks that is very close to what I was looking for. I have copied the code and will experiment with it.