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url, email and ip validation with php

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Simple PHP functions to validate url, email address and ip, functions will return TRUE for valid data and FALSE for invalid data.

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  1. <?php 
  2.  
  3. function is_valid_url($url){
  4.     $p1 ='/(http|https|ftp):\/\/[a-z0-9-]+(.[a-z0-9-]+)*(:[0-9]+)?(\/.*)?$/i';
  5.     return preg_match($p1, $url); 
  6. }
  7.  
  8.  
  9.  
  10. function is_valid_email($email){
  11.     if (filter_var($email, FILTER_VALIDATE_EMAIL))
  12.         return true;
  13.     else
  14.         return false;
  15. }
  16.  
  17.  
  18. function is_valid_ip($ip){
  19.     if (filter_var($ip, FILTER_VALIDATE_IP))
  20.         return true;
  21.     else
  22.         return false;
  23. }
  24.  
  25. ?>

URL: http://function-code.blogspot.com/2013/10/url-email-ip-validation-with-php.html

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