How can I increase the size of my integer variable in PHP?
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I need to store a huge number in a PHP variable (it's for a programming contest if you're wondering why). However, if the number is too big, it gets displayed as 6.2995416979471E+77 . Is there a way to store that huge number in PHP?
I have a HTML list of about 500 items and a "filter" box above it. I started by using jQuery to filter the list when I typed a letter (timing code added later): $('#filter').keyup( function() { var jqStart = (new Date).getTime(); var search = $(this).val().toLowerCase(); var $list = $('ul.ablist > li'); $list.each( function() { if ( $(this).text().toLowerCase().indexOf(search) === -1 ) $(this).hide(); else $(this).show(); } ); console.log('Time: ' + ((new Date).getTime() - jqStart)); } ); However, there was a couple of seconds delay after typing each letter (particularly the first letter). So I thought it may be slightly quicker if I used plain Javascript (I read recently that jQuery's each function is particularly slow). Here's my JS equivalent: document.getElementById('filter').addEventListener( 'keyup', function () { var jsStart = (new Date).getTime()...
integers have a limited size of 32 or 64bit, depending on your architecture.
ReplyDeletefloats can store values of any size, but are imprecise.
If you want to work with giant, precise numbers, use strings and the BC Math extension.
$bigNumber = 1234567890; // etc
ReplyDeleteecho number_format($bigNumber, 0);
Have you tried PHP's BCMath arbitrary precision functions? They use strings to represent numbers.
ReplyDelete