PHP On Solaris (2.6) And Integer Overflow
I have PHP version 4.4 installed on a Soaris 2.6 system and I'm getting
strange results doing math/boolean operators. I have a hashing
algorithm that does multiplication, bitwise operations and mod() calls
interatively on the characters of a filename. On a linux platform the
multiplications start to overflow (as I expect) and the overflow is
just dropped. The lower three bytes are masked off like this:
$result = $result & 0x00FFFFFF;
and the loop continues. On the Solaris platform the multiplication
fails very quickly in the loop, and it looks like the overflow bits are
wrapped around onto the lower order bytes, eventually I end up with an
interger value of 0x00FFFFFF because of the masking above. To solve the
problem I had to compile the gmp_* function support into PHP and work
with the gmp_* family of functions.
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Zero Filling Integer
Is there a way in PHP to zero fill an integer to a specified length? For instance, if I have a two digit number, and I want to zero fill it to four digits, is there a PHP function I can use? Or do I manually have to add zeros to the front?
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Adding A Zero To An Integer
I'm trying to work out how to format a variable as two digits even if it's one...so: 1 becomes 01, 2 becomes 02, but 10 stays as 10... is there an easy way? i tried number_format but that seems to only be for float vars.
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Length Of Integer
Basically i have a number: $i = 1 i want to keep adding to that number in a loop but i want it to give me: 01 02 03 04 ... rather than 1 2 3 4 how can i do this? If i make $i=01 i then get: 01 2 3 4
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Get Part Of A Integer
just like you have substr() to get part of a string, is there a way to get part of an integer? $myVar = 20060103142005; // and want $myVar = 20060103; what's the best way to do it? $myVar = 20060103142005; $myVar = substr ($myVar, 0, 8); echo $myVar; doesn't work. Trying to convert the number to a string doesn't work either: Code:
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Compare The Integer
i hav a problem here. <?php $answer = datediff("1984-05-02","now","y"); if($answer > 5){ echo "half year"; }else{ echo "not yet"; } ?> datediff() actually is a function that will print the age. so the age is 23. but for if else statement, 23 > 5 will print "not yet"...it should print "half year" rite? but,when i change to if($answer = 23), it will print "half year".
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Integer Manipulation
I'm wondering if any of you know any code that would convert a number that was entered with commas e.g. 1,000 to a calculation friendly number: 1000
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Echoing The Integer 0
Probably it's something dumb that I'm doing/not doing, but echo doesn't seem to want to echo a literal zero when the value of some var is zero. E.g.: $foo = 0 ; echo 'foo is ' . $foo ; yields: foo is not foo is 0 So far I've been kludging it with $foo?$foo:Ɔ', but I find it strange to have to do that, not to mention annoying. Is it something I'm doing, or is that a real deficiency in the language?
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Integer Problem
I am trying to query a game server and get the information I need using fread() into a buffer. I then parse this information, extracting server name, map name etc. etc. but when I come to the number of players, I have no idea how to recognize this as a number. $numplayers = $data[14]; echo sprintf("Num Players %d" , $numbers); displays 0 echo sprintf("Num Players %d" , $data[14]); displays 0 echo sprintf("Num Players %s" , bin2hex($data[14])); displays 0a (10, so the value at [14] is actually there, but how do I get it to be recognized as an int so my code can then work based on the $numplayers.
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Randomization By Integer
I have a table with a value: Popularity. What I want to do is do a site randomization. I have rows: id, url, website_description, popularity What I want to do is do a randomization where a site will come up in the script by a popularity number of 1 to 100(or more). My problem is I have seen plenty of randomization scripts out there but nothing this complex. Wondering if someone knows a way to do this. I want it to randomize all sites but those sites that have the highest popularity rating would show up more then the sites with the lowest.
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Integer Vs Decimal
I'm working on a voting script for entries. I record the rating (big int adding on everytime someone votes) and the number of votes. To output the data, I will use 0-5 stars. Basically, take rating, divide by number of votes, and decide which image to use. Decimals.
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