Posted
by Lancelot
on Stack Overflow
See other posts from Stack Overflow
or by Lancelot
Published on 2009-02-03T13:22:38Z
Indexed on
2010/04/03
22:03 UTC
Read the original article
Hit count: 335
How can I generate a CRC-8 checksum in PHP?
© Stack Overflow or respective owner
as seen on Server Fault
- Search for 'Server Fault'
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…
>>> More
as seen on Server Fault
- Search for 'Server Fault'
[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 …
>>> More
as seen on Server Fault
- Search for 'Server Fault'
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?…
>>> More
as seen on Server Fault
- Search for 'Server Fault'
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…
>>> More
as seen on Server Fault
- Search for 'Server Fault'
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:…
>>> More
as seen on Stack Overflow
- Search for 'Stack Overflow'
I am working on a function that will give me a Kermit CRC value from a HEX string. I have a piece of code in DELPHI. I am a .NET developer and need the code in C#.
function CRC_16(cadena : string):word;
var
valuehex : word;
i: integer;
CRC : word;
Begin
CRC := 0;
for i := 1 to length(cadena)…
>>> More
as seen on Super User
- Search for 'Super User'
So I got a dying Western Digital hard drive here and I have a new Western Digital hard drive to transfer all the data to. I have the new HDD hooked up by a SATA to USB. I want to transfer all the pictures, etc to the new HDD. I am unable to because of the CRC error. I have ran chkdsk /f /r and it…
>>> More
as seen on Stack Overflow
- Search for 'Stack Overflow'
I'm trying o implement the zipcrypto / zip 2.0 encryption algoritm to deal with encrypted zip files as discussed in
http://www.pkware.com/documents/casestudies/APPNOTE.TXT
I believe I've followed the specs but just can't seem to get it working. I'm fairly sure the issue has to do with my interpretation…
>>> More
as seen on Stack Overflow
- Search for 'Stack Overflow'
I want to use boost::crc so that it works exactly like PHP's crc32() function. I tried reading the horrible documentation and many headaches later I haven't made any progress.
Apparently I have to do something like:
int GetCrc32(const string& my_string) {
return crc_32 = boost::crc<bits…
>>> More
as seen on Stack Overflow
- Search for 'Stack Overflow'
I need to communicate with a RS232 device, I have no specs or information available.
I send a 16 byte command and get a 16 byte result back. The last byte looks like some kind of crc or checksum, I have tried using this http://miscel.dk/MiscEl/miscelCRCandChecksum.html with no luck.
Anyone can…
>>> More
