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Published on 2010-03-22T08:58:09Z
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How to work with big numbers in PHP?
such as
(6*27^0+17*27^1+11*27^2+18*27^3+25*27^4+4*27^5)^65537
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I have been trying to resolve my issue of spiking cpu caused by php-fpm processes. I've reduced the php-fpm config settings to:
pm = ondemand
pm.max_children = 12
pm.start_servers = 2
pm.min_spare_servers = 2
pm.max_spare_servers = 10
pm.max_requests = 500
php_admin_value[memory_limit] = 128M
Problem…
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[root@ip ~]# yum install php-pear*
Reducing CentOS-5 Testing to included packages only
Finished
Setting up Install Process
Package 1:php-pear-1.8.1-2.el5.centos.noarch already installed and latest versio …
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I am taking over an application server and discover that it contain the following settings:
AddType text/html php
Although it works, but my understanding is that it should set as following:
AddType application/x-httpd-php php .php
What are the key differences between the two settings?…
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Hello.
I have a server with VBulletin forum (working under Apache 2.2, CentOS). The default settings for it in .htaccess are as follows:
RewriteEngine on
RewriteCond %{HTTP_HOST} ^gsmforum\.ru
RewriteRule (.*) http://www.gsmforum.ru/$1 [R=301,L]
# If you are having problems or are using VirtualDocumentRoot…
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I have installed memcached fine, and now I will need to install PECL extension memcache. Im running RedHat x86_64 es5. The installation gives me this:
downloading memcache-2.2.6.tgz ...
Starting to download memcache-2.2.6.tgz (35,957 bytes)
..........done: 35,957 bytes
11 source files, building
running:…
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I'm playing with the El Gamal cryptosystem, and my goal is to be able to encipher and decipher long sequences of text. I have come up with a method that works for short sequences, but does not work for long sequences, and I cannot figure out why.
El Gamal requires the plaintext to be an integer…
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I'm playing with the El Gamal cryptosystem, and my goal is to be able to encipher and decipher long sequences of text. I have come up with a method that works for short sequences, but does not work for long sequences, and I cannot figure out why.
El Gamal requires the plaintext to be an integer…
>>> More
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In Java, most of the primitive types are signed (one bit is used to represent the +/-), and therefore when I am exceed the limits of this type, I can get many strange things, like negative numbers.
In the BigInteger class, I have no limits and there are some helpful functions there but it is pretty…
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I'm playing with numbers in Java, and want to see how big a number I can make. It is my understanding that BigInteger can hold a number of infinite size, so long as my computer has enough Memory to hold such a number, correct?
My problem is that BigInteger.pow accepts only an int, not another BigInteger…
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I'm playing with the El Gamal cryptosystem, and my goal is to be able to encipher and decipher long sequences of text. I have come up with a method that works for short sequences, but does not work for long sequences, and I cannot figure out why.
El Gamal requires the plaintext to be an integer…
>>> More
