How to Validate IP Address in PHP


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  1. <?php
  2. $ip_address = '127.0.0.1';
  3.  
  4. if(preg_match('/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$/', $ip_address)){
  5. echo 'IP address is valid!';
  6. }else{
  7. echo 'IP address is NOT valid!';
  8. }

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