Re: PHP3 and 64-bit land

On Sat, Feb 27, 1999 at 07:23:51PM +0200, Zeev Suraski wrote: > On Sat, 27 Feb 1999 sas@schell.de wrote: > > > I disagree here. The chance of having the same ptr in 32 bit is about 1 in > > 2^32 = 4,294,967,296. If you come to Germany, your chance to win the lottery > > ("6 aus 49") is about 1 to 49!/43! = 10,068,347,520. > > Hmm, ok, we'll stay with the Israeli lottery here. The "extra number" ("Zusatzzahl") doubles the propability. That is still higher than 1/2^32 ;) > > It's extremly safe, but you risk random, non repeatable crashes produced by > > playing that way. > > Considering this as a risk is simply wrong. It's more or less like saying > CRC-32 isn't reliable (there's a difference, but not inherent). To quote from RFC1510 about CRC-32: The CRC-32 checksum calculates a checksum based on a cyclic redundancy check as described in ISO 3309 [14]. The resulting checksum is four (4) octets in length. The CRC-32 is neither keyed nor collision-proof. The use of this checksum is not recommended. > Either way, you don't risk crashes, at worse, you simply don't find the > resource you're looking for. It depends on the data and what you do with it. -- Regards, Sascha Schumann | Consultant | finger sas@schell.de | for PGP public key -- PHP Development Mailing List http://www.php.net/ To unsubscribe send an empty message to php-dev-unsubscribe@lists.php.net For help: php-dev-help@lists.php.net