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# Net_IPv4::atoh()

Net_IPv4::atoh() -- Converts a dot-quad formatted IP address into a hexadecimal string

## Synopsis

    require_once 'Net/IPv4.php';

``mixed atoh` (string $addr)`

## Description

Converts a dot-quad formatted IP address into a hexadecimal string - for example "192.168.1.0" to "c0a80100". Returns `FALSE` if the string given is no valid IP adress.

## Note

This function can be called statically.

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