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Contact Form Validation

I have created a contact form and i need to provide email and phone no. validation in that. I have created the form in a html file and on submit it redirects to a php file where all the mailing and database storage things happen. After the code is processed it redirects automatically to the html file. So the php file is not at all seen. But now i want to validate the email and phone no. of the form. If it is invalid it say invalid on the same form and extension should be html only.

You can check if phone numbers are being used by XML well i have before i'm not to sure about HTML (but they're alike) also you may need to use JavaScript as Adam below is saying.

Hi Fuad, Can you Please tell me how is it done...I am very new to this Thanks in Advance

1 Answer

You should Ideally have some Javascript Validation for the user to give them feedback (jQuery Validation) link is perfect and easy to implement. Then you would most certainly need some PHP validation to ensuring only he correct information is being sent through, also to stop those pesky robots from filing in your form and to stop more serious attacks on your mailing system.

This site has tutorials for all of these.