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How efficient is locking an unlocked mutex? What is the cost of a mutex?
...you wish. You are only limited by the amount of memory you application can allocate.
Summary. User-space locks (and the mutexes in particular) are cheap and not subjected to any system limit. But too many of them spells nightmare for debugging. Simple table:
Less locks means more contentions (slo...
When should one use HTML entities?
... entities.
Some libraries do not play along nice with utf-8. For instance, PHP in some Linux distributions dropped full support for utf-8 in their regular expression libraries.
It is harder to limit the number of characters in a text that uses html entities, because a single entity uses many charact...
RESTful Services - WSDL Equivalent
...oadable clients developed for the major programming languages (Java, .NET, PHP, etc). In my opinion, this places a lot of burden on the service provider.
– dana
Nov 6 '10 at 16:42
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How can I get file extensions with JavaScript?
...y much. It's nice to see a solution not using regex; I have done this with PHP and it only uses a couple of functions. +1
– Bojangles
Dec 1 '10 at 20:01
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Copy/duplicate database without using mysqldump
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In PHP:
function cloneDatabase($dbName, $newDbName){
global $admin;
$db_check = @mysql_select_db ( $dbName );
$getTables = $admin->query("SHOW TABLES");
$tables = array();
while($row = mysql_fetch...
Is putting a div inside an anchor ever correct?
...d have used doctype.com. Opps - I'll try to remember for next time around. PHP -> SO, HTML -> doctype.com
– Tom
Dec 1 '09 at 18:41
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How to amend several commits in Git to change author
...on https://web.archive.org/web/20100213104931/http://blog.madism.org/index.php/2007/09/09/138-git-awsome-ness-git-rebase-interactive
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Why do you need to put #!/bin/bash at the beginning of a script file?
...sh, the "Bourne Again Shell"), scripts can be in bash, python, perl, ruby, PHP, etc, etc. For example, you might see #!/bin/perl or #!/bin/perl5.
PS:
The exclamation mark (!) is affectionately called "bang". The shell comment symbol (#) is sometimes called "hash".
PPS:
Remember - under *nix, ass...
How to trick an application into thinking its stdout is a terminal, not a pipe
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I don't know if it's doable from PHP, but if you really need the child process to see a TTY, you can create a PTY.
In C:
#include <stdio.h>
#include <stdlib.h>
#include <sysexits.h>
#include <unistd.h>
#include <pty.h>
int ma...
Correct owner/group/permissions for Apache 2 site files/folders under Mac OS X?
... This is true if you have guest file sharing activated or a malicious php script installed… Make sure there's only the Public and Sites folder which is "readable" by everyone. Step 3 applies only to the "Sites" folder… Thus normally others folders shouldn't be altered…
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