php
Zend_Validate_EmailAddress和filter_var(..., FILTER_VALIDATE_EMAIL) ，这在验证电子邮件地址时更好，为什么？
Both can be used to validate an email address, but Zend_Validate_EmailAddress is more powerful. While filter_var is a simple yes or no validator, there are many options which can change how strict Zend_Validate_EmailAddress is.
You can choose which parts to validate, rules for validating those parts, and even to validate MX records.
Finally, Zend_Validate_EmailAddress can be readily used in combination with Zend_Filter_Input and Zend_Form where filter_var can't.
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