Re: 0.0.0.0 & iplong()

From: Date: Mon, 04 Jun 2012 18:38:13 +0000
Subject: Re: 0.0.0.0 & iplong()
References: 1 2  Groups: php.general 
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On 06/04/2012 11:33 AM, Matijn Woudt wrote:
On Mon, Jun 4, 2012 at 6:54 PM, jas<jason.gerfen@gmail.com> wrote:
Not sure if this is a bug or not... I have run into an error when performing a conditional using iplong() and the ~ bitwise operator $ip = '0.0.0.0'; $mask = '24'; $end = (ip2long($ip) || (~ip2long($mask))) + 1; PHP Fatal error: Unsupported operand types I even tried to typecast the mask to (int)
The error is probably not where you suspect it to be. ip2long will return false for ip2long($mask), because $mask is not a valid IP address. The ~ operator is not supported for false. - Matijn
Strange... this works $ip = '10.0.2.0'; $mask = '24'; Anything using 0.0.0.0 fails using the bitmask to calculate valid CIDR ranges.

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