The error:
/usr/local> php -v
PHP Fatal error: PHP Startup: apc_shm_create: shmget(0, 31457280, 914) failed: Cannot allocate memory. It is possible that the chosen SHM segment size is higher than the operation system allows. Linux has usually a default limit of 32MB per segment. in Unknown on line 0
PHP Fatal error: PHP Startup: apc_shm_attach: shmat failed: in Unknown on line 0
Segmentation fault: 11 (core dumped)

The first problem was the ”PHP Fatal error” lines that has something to do with APC cache. This was solved by:
/usr/ports/www/pecl-APC> make config
Then I unticked the "IPC Enable IPC shm memory support (default: mmap)" line. Don't really know what it does....
/usr/ports/www/pecl-APC> make deinstall
/usr/ports/www/pecl-APC> make clean
/usr/ports/www/pecl-APC> make install clean

The second problem was the ”Segmentation fault: 11 (core dumped)” line which caused a core dump each time php ran (a php.core file is produced). This was a bit strange. To investigate why it crashes I used gdb on the core file. A core file contains the in-memory state of the program at the time it crashes.

/usr/local/lib/php> gdb /usr/local/bin/php php.core
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "amd64-marcel-freebsd"...(no debugging symbols found)...
Core was generated by `php'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /lib/libcrypt.so.4...(no debugging symbols found)...done.
Loaded symbols for /lib/libcrypt.so.4
Reading symbols from /usr/local/lib/libpcre.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libpcre.so.0
Reading symbols from /lib/libm.so.5...(no debugging symbols found)...done.
Loaded symbols for /lib/libm.so.5
Reading symbols from /usr/local/lib/libxml2.so.5...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libxml2.so.5
Reading symbols from /lib/libz.so.4...(no debugging symbols found)...done.
Loaded symbols for /lib/libz.so.4
Reading symbols from /usr/local/lib/libiconv.so.3...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libiconv.so.3
Reading symbols from /lib/libc.so.7...(no debugging symbols found)...done.
Loaded symbols for /lib/libc.so.7
Reading symbols from /usr/local/lib/php/libs/curl.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/curl.so
Reading symbols from /usr/local/lib/libcurl.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libcurl.so.6
Reading symbols from /usr/lib/libssl.so.5...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libssl.so.5
Reading symbols from /lib/libcrypto.so.5...(no debugging symbols found)...done.
Loaded symbols for /lib/libcrypto.so.5
Reading symbols from /usr/local/lib/php/libs/iconv.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/iconv.so
Reading symbols from /usr/local/lib/php/libs/json.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/json.so
Reading symbols from /usr/local/lib/php/libs/exif.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/exif.so
Reading symbols from /usr/local/lib/php/libs/ftp.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/ftp.so
Reading symbols from /usr/local/lib/php/libs/openssl.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/openssl.so
Reading symbols from /usr/local/lib/php/libs/hash.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/hash.so
Reading symbols from /usr/local/lib/php/libs/bz2.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/bz2.so
Reading symbols from /usr/lib/libbz2.so.3...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libbz2.so.3
Reading symbols from /usr/local/lib/php/libs/mysql.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/mysql.so
Reading symbols from /usr/local/lib/php/libs/tokenizer.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/tokenizer.so
Reading symbols from /usr/local/lib/php/libs/simplexml.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/simplexml.so
Reading symbols from /usr/local/lib/php/libs/xml.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/xml.so
Reading symbols from /usr/local/lib/php/libs/posix.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/posix.so
Reading symbols from /usr/local/lib/php/libs/dom.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/dom.so
Reading symbols from /usr/local/lib/php/libs/gd.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/gd.so
Reading symbols from /usr/local/lib/libt1.so.5...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libt1.so.5
Reading symbols from /usr/local/lib/libfreetype.so.9...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libfreetype.so.9
Reading symbols from /usr/local/lib/libX11.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libX11.so.6
Reading symbols from /usr/local/lib/libXpm.so.4...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libXpm.so.4
Reading symbols from /usr/local/lib/libpng.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libpng.so.6
Reading symbols from /usr/local/lib/libjpeg.so.11...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libjpeg.so.11
Reading symbols from /usr/local/lib/libxcb.so.2...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libxcb.so.2
Reading symbols from /usr/lib/librpcsvc.so.4...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/librpcsvc.so.4
Reading symbols from /usr/local/lib/libXau.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libXau.so.6
Reading symbols from /usr/local/lib/libXdmcp.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libXdmcp.so.6
Reading symbols from /usr/local/lib/libpthread-stubs.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libpthread-stubs.so.0
Reading symbols from /usr/local/lib/php/libs/xmlreader.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/xmlreader.so
Reading symbols from /usr/local/lib/php/libs/xmlwriter.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/xmlwriter.so
Reading symbols from /usr/local/lib/php/libs/sockets.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/sockets.so
Reading symbols from /usr/local/lib/php/libs/zlib.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/zlib.so
Reading symbols from /usr/local/lib/php/libs/session.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/session.so
Reading symbols from /usr/local/lib/php/libs/soap.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/soap.so
Reading symbols from /usr/local/lib/php/libs/xsl.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/xsl.so
Reading symbols from /usr/local/lib/libexslt.so.8...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libexslt.so.8
Reading symbols from /usr/local/lib/libxslt.so.2...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libxslt.so.2
Reading symbols from /usr/local/lib/libgcrypt.so.17...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libgcrypt.so.17
Reading symbols from /usr/local/lib/libgpg-error.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libgpg-error.so.0
Reading symbols from /usr/local/lib/libintl.so.9...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libintl.so.9
Reading symbols from /usr/local/lib/php/libs/sqlite.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/sqlite.so
Reading symbols from /usr/local/lib/php/libs/pdo.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/pdo.so
Reading symbols from /usr/local/lib/php/libs/pdo_sqlite.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/pdo_sqlite.so
Reading symbols from /usr/local/lib/libsqlite3.so.8...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/libsqlite3.so.8
Reading symbols from /lib/libthr.so.3...(no debugging symbols found)...done.
Loaded symbols for /lib/libthr.so.3
Reading symbols from /usr/local/lib/php/libs/xmlrpc.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/xmlrpc.so
Reading symbols from /usr/local/lib/php/libs/ctype.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/ctype.so
Reading symbols from /usr/local/lib/php/libs/fileinfo.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/fileinfo.so
Reading symbols from /usr/local/lib/php/libs/filter.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/filter.so
Reading symbols from /usr/local/lib/php/libs/imap.so...(no debugging symbols found)...done.
Loaded symbols for /usr/local/lib/php/libs/imap.so
Reading symbols from /usr/local/lib/libc-client4.so.9...done.
Loaded symbols for /usr/local/lib/libc-client4.so.9
Reading symbols from /usr/lib/libpam.so.4...done.
Loaded symbols for /usr/lib/libpam.so.4
Reading symbols from /usr/local/lib/php/libs/mbstring.so...done.
Loaded symbols for /usr/local/lib/php/libs/mbstring.so
Reading symbols from /usr/local/lib/libonig.so.1...done.
Loaded symbols for /usr/local/lib/libonig.so.1
Reading symbols from /usr/local/lib/php/libs/sqlite3.so...done.
Loaded symbols for /usr/local/lib/php/libs/sqlite3.so
Reading symbols from /usr/local/lib/php/libs/zip.so...done.
Loaded symbols for /usr/local/lib/php/libs/zip.so
Reading symbols from /usr/local/lib/php/libs/apc.so...done.
Loaded symbols for /usr/local/lib/php/libs/apc.so
Reading symbols from /usr/lib/librt.so.1...done.
Loaded symbols for /usr/lib/librt.so.1
Reading symbols from /libexec/ld-elf.so.1...done.
Loaded symbols for /libexec/ld-elf.so.1
#0 0x0000000805de1f5d in apc_sma_init () from /usr/local/lib/php/libs/apc.so
[New Thread 0x801533120 (LWP 100263)]


Ok, I smell some fish here. Then i checked the ”stack backtrace” with bt.

(gdb) bt
#0 0x0000000804c7c8c0 in ?? ()
#1 0x00000008042e1bc4 in xsltUnregisterExtModuleFunction () from /usr/local/lib/libxslt.so.2
#2 0x00000008040adc97 in zm_shutdown_xsl () from /usr/local/lib/php/libs/xsl.so
#3 0x000000000055e2cf in module_destructor ()
#4 0x000000000056597a in zend_hash_apply_deleter ()
#5 0x0000000000565be8 in zend_hash_graceful_reverse_destroy ()
#6 0x00000000005596f7 in zend_shutdown ()
#7 0x00000000005045f5 in php_module_shutdown ()
#8 0x00000000005e505f in main ()
#9 0x00000000004189e5 in _start ()
#10 0x0000000800786000 in ?? ()


The problem was clearly related to one of my php-extensions /usr/local/lib/php/libs/xsl.so. Then I tried not to use this extension by uncomment it in /usr/local/etc/php/extensions.ini. However I got similiar error in another extension by doing that. There must be some other error that hasn’t with my extensions to do…

With some google fu I found this post which explains the problem. Some extensions are threaded while php5 isn’t by default. To make php threaded you have to configure it to be so. That’s fairly easy in Freebsd.

/usr/ports/lang/php5/make config
Tick the "LINKTHR Link thread lib (for threaded extensions)" option.
/usr/ports/lang/php5/make deinstall
/usr/ports/lang/php5/make clean
/usr/ports/lang/php5/make install clean

Then i restarted my apache server, typed ”php -m” and everything looked fine, not one single strange error message. Yieeehaa!!

The release info says it all:
”The theme of this release is: back to basics! All non-essential functionality has been removed from eAccelerator. The key and content cache and the session functions have been removed. ”

The theme of this release is a killer for me. I have used eAccelerator for many years with great success but now its time to move on. I am now looking for other php cache systems and I also have to rewrite my code. It is not that much work but it has to be done, sadly. I hope there is something good or better then eAccelerator waiting for me in the FreeBSd ports-tree…

… and I found the prefect solution for me in Alternative PHP Cache – APC. It is going to be included (by default?) in PHP6 so I think it is the best choice for me and others. The most important functionality for me right now is apc_add or apc_store which should be the equivalent of eaccelerator_put. Great!

How to install APC in FreeBSD
cd /usr/ports/www/pecl-APC
make install clean

And remember to uncomment eaccelerator from php.ini.

Jag har gjort en egen lösning för detta i php+css+html som gör att mina sidor ser ut enligt screenshoten nedan. Tanken är att imitera actionbaren som finns i IE6 och be användaren att uppdatera sin webbläsare om denne kör IE6. Lösningen är en blandning av flera andra lösningar.

Screenshot

php
// Vilken webbläsare kör användaren
$browser = substr($_SERVER['HTTP_USER_AGENT'], 25, 8);

// Kolla om IE6
$ie6 = ($browser == "MSIE 6.0");

// Om IE6, visa actionbar
if(!$ie6) { include "actionbar.html"; }

CSS
div.activebar
{
position: absolute;
background-color: #ffffe1;
border-bottom: 1px solid #c8c8c8;
margin:0;
padding:0;
width:100%;
}

div.activebarText
{
font-family: sans-serif;
font-size: 12px;
margin-left: 6px;
margin-top: 4px;
height: 100%;
}

actionbar.html
<div class="activebar">
<div class="activebarText" align="center">
Din webbläsare är gammal och osäker! För att få ut det mesta av vår webbsida så rekommenderar vi att ni <a href="http://www.microsoft.com/ie" target="_blank">uppgraderar</a> den.
Pröva även andra populära webbläsare som <a href="http://www.mozilla.com/sv-SE/" target="_blank">Firefox</a>, <a href="http://www.opera.com/" target="_blank">Opera</a>, <a href="http://www.google.com/chrome/" target="_blank">Chrome</a> eller <a href="http://www.apple.com/se/safari/" target="_blank">Safari</a>.
</div>
</div>

If the posted link is a youtube-link, are you converting it the same way? Why should you! A cooler way is to convert the link to a embedded youtube-video, like this:

I have written a small php-function that converts youtube-links (like: http://www.youtube.com/watch?v=XELJ9_Fy0ag) in text to embedded videos. Download it, give it a try and feel free to modify it to suit your needs. Feedback is appreciated.

Download parseYoutubeUrls

function parseYoutubeUrls($text, $width = -1, $height = -1)
{
// defaults
if($width == -1) { $width = 425; }
if($height == -1) { $height = round((344/425) * $width); }

// get all urls in text
$regexp = "/<a\s+.*?href=[\"\']?([^\"\' >]*)[\"\']?[^>]*>(.*)<\/a>/i";
if(preg_match_all($regexp, $text, $matches, PREG_SET_ORDER))
{
// check each url
foreach($matches as $match)
{
// replace all youtube urls with embedded flash player
if(preg_match_all("/www.youtube.com/",$match[1],$hit))
{
$parsedUrl = parse_url($match[1]);
parse_str($parsedUrl["query"], $query);
$videoId = ($query['v']);
$replace = '<p><object width="'.$width.'" height="'.$height.'"><param name="movie" value="http://www.youtube.com/v/'.$videoId.'&hl=sv&fs=1&rel=0"> </param> <param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/'.$videoId.'&hl=sv&fs=1&rel=0" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="'.$width.'" height="'.$height.'"></embed></object></p>';
$text = str_replace($match[0],$replace, $text);
}
}
}
return $text;
}

Eftersom jag är ett stort fan av att använda WordPress (php) som CMS till enklare webbsidor åt föreningar/mindre företag så blev det givetvis den tekniska lösningen. Som vanligt blev det lite hackande i form av att mixtra med teman samt plugins/tillägg men det var ganska enkla fixar som behövde göras. Samtidigt var det kul att se alla bra nyheter i WordPress 2.8. Det är riktigt imponerande att följa WP’s utveckling.

Step 1
Open the file ”wp-includes/class-phpmailer.php” (which is the class that sends email in WordPress) in your favourite text-editor.

Step 2
Find and modify the following properties.

var $Mailer = ‘smtp’;
var $Host = ‘smtp.gmail.com’;
var $Port = 465;
var $SMTPAuth = true;
var $Username = ‘your_username@gmail.com’;
var $Password = ‘your_gmail_password’;

Step 3
Find the the method ”IsMail” (in the same file) and comment out one row of code like this:

function IsMail() {
//$this->Mailer = ‘mail’;
}

All steps complete!

This should work with all WordPress versions that uses a version of the phpMailer-class that is Gmail compatible.

Tested in WordPress v 2.7

LOOK HERE
I don’t use this method any longer because I don’t want to touch the core-files of wordpress. It is a bad habit to do so, because they get overwritten each time you update wordpress. There is a plugin called XPertMailer that can send email through gmail. Use that one instead!

Saker som imponerar på mig:
* Automatisk uppdatering och installation av plugins.
* Automatisk uppdatering av själva WordPress ”core”
* Det nya GUI:t. Snyggare, enklare och bättre.
* Enkel och smidig uppgradering och installation.
* Widgets för sidopanelen som ändras via wp-admin

Nu tänker jag installera ett nytt tema och anpassa sajten för denna. Så sidan kan se lite tokig ut ett tag och vissa länkar kan vara döda innan jag fått till det.

Summering:
Wordpress 2.7 är en riktigt bra version om man jämför med 2.3 som jag körde tidigare. Man har kommit riktigt långt såväl användarmässigt som systemmässigt. WordPress är riktigt imponerande både som blogg-verktyg och CMS. Det finns ingen tvekan längre, jag kommer nu definitivt att använda WordPress som mitt primära CMS-system.

För att göra något vettigt så gjorde jag en applikation som hämtar upp den senaste elitserietabellen på HockeySnack. Denna kan sedan användarna lägga till på sin egen profil.

För att installera Elitserien på din profil så går du till adressen http://apps.facebook.com/elitserien/ och följer instruktionerna. Om du gillar applikationen så får du gärna sprida den till dina hockeypolare.

Exempel på bilden nedan:

Eftersom det inte är särskilt svårt att göra en Facebook applikation så var det här troligen inte den sista som jag tillverkar. Om man lyckas göra en bra svensk applikation så tror jag att man kan få en väldigt stor spridning med tanke på användarantalet på FB.

Elitserien på Facebook

This webpage has a solution
Another page about the same stuff

In my current project I am trying to convert a Java Calendar object to a C# DateTime through JNI (Java Native Interface). I have no perfect solution at this moment but I will try to use a unix timestamp though I am losing some precision.

Java has direct conversion from Calendar to Date (which is a representation of a unix timestamp). Bravo! :-)

php has lots of functions (like timetostr, time) to create and convert unix timestamps.

public static string StripTags(string str)
{
return Regex.Replace(str, @”<(.|\n)*?>”, string.Empty);
}