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PEAR Manual

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Net_IPv4::validateNetmask()

Net_IPv4::validateNetmask() -- Validate the syntax of the given netmask.

require_once 'Net/IPv4.php';

bool validateNetmask (string $netmask)

Validates the syntax of a dot-quad formatted netmask. Returns true if netmask is valid, false if not.

This function can be called statically.

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Net_IPv4::validateIP()	Up	Net_IPv4::parseAddress()

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