PHP - ip and bigint converter

PHP - ip and bigint converter.php

<?php
    //Helper function to convert bigint to ip adress
    function int2ip($intip){
        $ipVal    = $intip;
        $ipArr    = array(0 => floor($ipVal/0x1000000) );
        $ipVint   = $ipVal-($ipArr[0]*0x1000000); // for clarity
        $ipArr[1] = ($ipVint & 0xFF0000)  >> 16;
        $ipArr[2] = ($ipVint & 0xFF00  )  >> 8;
        $ipArr[3] =  $ipVint & 0xFF;
        $ipDotted = implode('.', $ipArr);

        return $ipDotted;
    }

    //Helper function to convert ip adress to bigint
    function ip2int($ip){
      $ipArr    = explode('.',$ip);
      $ip       = $ipArr[0] * 0x1000000
                + $ipArr[1] * 0x10000
                + $ipArr[2] * 0x100
                + $ipArr[3]
                ;

        return $ip;
    }
?>