Code for validating email in php

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If the purpose of registration is to confirm that the person exists, and that they have supplied a valid email address, then as part of the registration processe you a should either email them a random password or a confirmation token rather than letting them choose their own password and use it immediately.

The code presented below would then be used for letting the user change their password.

Instead of as this lets the browser (and the user) know that the contents of that field need to be secured.

The password won't appear on the screen as you type and most browsers also won't 'remember' the values entered in fields as they do with other form elements.

Otherwise your application needs to provide this function.

Passwords need to be stored encrypted in the database or elsewhere and any backups should also be encrypted.

Consider the following: If you are using a supported browser you can use the form below to test the regular expression: If you want to restrict the password to ONLY letters and numbers (no spaces or other characters) then only a slight change is required.

You might implement this code on your own website as follows: As you can see, it's well worth learning the intricacies of regular expressions.

They can be used not just in Java Script, but also PHP, Perl, Java and many other languages.

Some text editors (not just vi) also allow them when searching for or replacing text. This is a new technique available in modern browsers and definitely the way of the future.

All we have changed from the previous example is to add some extra attributes to the form input fields.

The rest of the HTML and Java Script remains unaltered: polyfill code which can be found further down the page.

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