Question

Write a PHP script that tests whether an e-mail address is input correctly. Verify that the input begins with series of characters, followed by the @ character, another series of characters, a perod (.) and a final series of characters. Test your program, using both valid and invalid e-mail address.

Please make sure it outputs valid or invalid address

Answer 1

Below is the required PHP script to test whether email address is input correctly:

1. <?php
2. function emailvalidation($mail) {
3. if (preg_match("/[\\000-\\050]/",$mail)) {
4. return false;
5. }
6. $patrn = "/^\[-_a-z0-9\'+*$^&%=~!?{}]++(?:\.[-_a-z0-9\'+*$^&%=~!?{}]+)*+@(?:(?![-.])[-a-z0-9.]+(?<![-.])\.[a-z]{2,6}|\d{1,3}(?:\.\d{1,3}){3})(?::\d++)?$/iD";
7. if(!preg_match($patrn, $mail)){
8. return false;
9. }
10. list($usr,$dom) = explode('@',$mail);
11. if( function_exists('dnschk') ) {
12. if( !dnschk($dom,"MX") ) {
13. return false;
14. }
15. }
16. else if( function_exists("gtmxr") ) {
17. if ( !gtmxr($dom, $mxhosts) ) {
18. return false;
19. }
20. }
21. return true;
22. }
23. ?>

Thank you.