modulus operation gives negative value in php -

-

i expects 768 following statement. echos -360. why?

echo 1364808202768%1000;

update:

#: php -v php 5.3.2-1ubuntu4.17 suhosin-patch (cli) (built: jun 19 2012 01:35:33)  copyright (c) 1997-2009 php group zend engine v2.3.0, copyright (c) 1998-2010 zend technologies     xdebug v2.0.5, copyright (c) 2002-2008, derick rethans  #: php -r 'echo 1364808202768%1000;' -360  #: uname -a linux tripura 2.6.32-37-generic #81-ubuntu smp fri dec 2 20:35:14 utc 2011 i686 gnu/linux

it because number exceeds maximum integer type can hold. can check if integer big this:

var_dump('1364808202768' > php_int_max);

the built-in function fmod easy use, , should able handle big numbers:

echo fmod('1364808202768', 1000);

you can use 1 of 2 common extensions (gmp , bc) if, whatever reason, fmod not available, or if work large numbers:

// using gmp extension $big = gmp_init('1364808202768', 10); $val = gmp_strval(gmp_mod($big, 1000)); echo $val;  // using bc extension echo bcmod('1364808202768', 1000);

Comments

Post a Comment

Popular posts from this blog

Delphi XE2 Indy10 udp client-server interchange using SendBuffer-ReceiveBuffer -

-
i use delphi xe2 , indy10 udp protocol. can't receive server echo on client side if use receivebuffer method. got "socket error # 10040" although send small echo message server client. console application illustrate problem below. in advance. program project1; {$apptype console} {$r *.res} uses system.sysutils, idglobal, idbasecomponent, idcomponent, idsockethandle, idudpclient, idudpserver, idudpbase, idstack; type tudp_serv = class(tidudpserver) procedure udpsvudpread(athread: tidudplistenerthread; adata: tidbytes; abinding: tidsockethandle); end; var udpserver: tudp_serv; udpcl: tidudpclient; bsnd, brcv: tbytes; s: string; k: integer; //============================================================================== procedure tudp_serv.udpsvudpread(athread: tidudplistenerthread; adata: tidbytes; abinding: tidsockethandle); begin writeln(' server read: ' + tohex(adata, length(adata))); abinding sendto(peerip, peerport, adat...
Read more

Qt ActiveX WMI QAxBase::dynamicCallHelper: ItemIndex(int): No such property in -

-
i new windows programming. here goes code objiwbemlocator = new qaxobject("wbemscripting.swbemlocator"); objwmiservice = objiwbemlocator->querysubobject("connectserver(qstring&,qstring&)",qstring("."),qstring("root\\cimv2")); qaxobject* returnlist = objwmiservice->querysubobject("execquery(qstring&)", qstring("select * %1").arg(domain)); qaxobject* result = returnlist->querysubobject("itemindex(int)", 0); i getting error on runtime qt activex wmi qaxbase::dynamiccallhelper: itemindex(int): no such property in but itemindex method exists msdn says the itemindex method not work collections not contain swbemobjects, such swbemmethodset, swbemnamedvalueset, swbemprivilegeset, swbempropertyset, , swbemqualifierset. what selecting ? have tried iterating on collection ? plus need minimum windows vista itemindex method. hope helps
Read more

Enable autocomplete or intellisense in Atom editor for PHP -

-
i'm first time user of atom editor php code. atom can autocomplete built-in functions of php. possible make editor autocomplete custom function written in separate file? function.php <?php function printsomething() { echo "hello world"; } index.php <?php require_once "function.php"; printsomething(); // autocompleted atom editor while typing thanks in advance. there text file in %userprofile%.atom called snippets.cson. in there can add snippet. more this: http://flight-manual.atom.io/using-atom/sections/snippets/ but need think can use later on other files well. otherwise need copy , paste.
Read more