How to validate an Email in PHP

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How can I validate the input value is a valid email address using php5. This is my code

function isValidEmail($email){ 
     $pattern = "^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$"; 

     if (eregi($pattern, $email)){ 
        return true; 
     } 
     else { 
        return false; 
     }    
} 

This shows a deprecated error. How can I fix this issue? 

Jun 16 in PHP by narikkadan
• 10,840 points
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