如何检查PHP中存在的电子邮件[重复]

Possible Duplicate:
How to check if the email is valid?

• How can we check validate email?
• How can we check if email address really exist in php?

Easy way to validate email just use type="email"

Example

<form>
    <input type="email" name="email">
    <input type="submit" name="submit">
</form>

filter_var('test@test.com', FILTER_VALIDATE_EMAIL)