Archive for php

Facebook Error Message: Requires valid next URL.

June 16th, 2010 • facebook, php, snippets
Tags: ,

Let me start with asking you a few questions!

  1. Are you having issues with the Facebook API?
  2. Are you constantly getting the error message “API Error Code: 100 API Error Description: Invalid parameter Error Message: Requires valid next URL.“?
  3. Are you using the latest official Facebook PHP class?
  4. Are you redirecting using the PHP header() function?

Facebook error

Well,  I might have a solution for you. When calling the function getLoginUrl in the Facebook PHP class, the function will return a HTML encoded string. When outputing this string to your browser, it is rendered/decoded by a browser and this will convert all “safe” charachters to their textual equivalent.  This makes that “&” becomes “&” and “%20″ becomes ” “.

However, when using the header() function in PHP, this url will not be rendered/decoded and you are basically sending out a garbled request.

Original

getLoginUrl($params);
header('Location:' . $url);

Solution:

getLoginUrl($params);
$url = str_replace('&','&',urldecode($url));
header('Location:' . $url);

WordPress mysqli 2.9 Database Class Patch

December 30th, 2009 • 3 comments freebies, patch, php, wordpress

wordpress-logoWordPress does not officialy support the mysqli drivers.  I needed my WordPress installation to use the mysqli class instead of the mysql ones. I’m sure there will be someone else out there with the same needs I decided to place the modified database class and the patch file online. Use whichever you prefer.

Read more »

xdebug trace file parser

November 18th, 2009 • 2 comments freebies, php, snippets, software, xdebug

xdebug_trace_preview

When I am trying to optimize my PHP code, one of my prefered tools is xdebug. It provides me with excellent error messages, outputs code tracing files & insight into memory usage.

By using kcachegrind or webgrind – wincachegrind crashes *all* the time – to parse the cachegrind files created by xdebug, you get a good idea of what your code is doing most of the time. It’ll show you which functions are called, by who, which arguments are passed and tons more. Check it out.

Now, there was one small thing I couldn’t find anywhere. A program to parse the trace files that xdebug generates. True, xdebug already provides the option to output this information into HTML, but it’s not really what I was looking for. I want to get quick information in the blink of an eye! That’s why I have created my own trace file parser, based on PHP of course.

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xampp mysqli crashes apache

November 18th, 2009 • apache, mysql, php, windows, xampp

Is your XAMPP installation crashing apache when using the mysqli PHP functions on windows? The apache logs are not telling anything even when you have debug mode enabled? Are you getting something like “Faulting application apache.exe, version 2.2.11.0, faulting module ntdll.dll” or “Faulting application apache.exe, version 2.2.11.0, faulting module MSVCR71.dll.” ?

Really? Sure? Well here’s your solution…

Download the most recent version of php_mysqli.dll and place it in <yourxampdir>\php\ext directory.You might want to take a backup of the file you’re replacing in case it doesn’t work…

You can download the php_mysqli.dll righ here or you’ll have to find a recent version for your PHP version yourself.

Multiple memcache instances/servers on windows

May 11th, 2009 • 2 comments memcache, memcached, php, windows

Setting up memcache on windows is like taking candy from a baby. You can find all the information and the binaries for memcache at http://jehiah.cz/projects/memcached-win32/ . Note that these binaries will also work for x64 based windows.

A little trickier is to set up multiple instances of memcached on your windows machine. Basically you have to install the same memcache executable as many times as you want servers.

Installing memcache from the command line is simple:

sc create  "Memcached11211" binPath= "E:\webserver\memcached.exe -d runservice -p 11211 -m 128"  DisplayName= "Memcached11211" start= auto

Thus, for multiple instances this will be:

sc create  "Memcached11211" binPath= "E:\webserver\memcached.exe -d runservice -p 11211 -m 15"  DisplayName= "Memcached11211" start= auto
sc create  "Memcached11212" binPath= "E:\webserver\memcached.exe -d runservice -p 11212 -m 15"  DisplayName= "Memcached11212" start= auto
sc create  "Memcached11213" binPath= "E:\webserver\memcached.exe -d runservice -p 11213 -m 15"  DisplayName= "Memcached11213" start= auto
sc create  "Memcached11214" binPath= "E:\webserver\memcached.exe -d runservice -p 11214 -m 15"  DisplayName= "Memcached11214" start= auto
sc create  "Memcached11215" binPath= "E:\webserver\memcached.exe -d runservice -p 11215 -m 15"  DisplayName= "Memcached11215" start= auto
sc create  "Memcached11216" binPath= "E:\webserver\memcached.exe -d runservice -p 11216 -m 15"  DisplayName= "Memcached11216" start= auto
sc create  "Memcached11217" binPath= "E:\webserver\memcached.exe -d runservice -p 11217 -m 15"  DisplayName= "Memcached11217" start= auto
sc create  "Memcached11218" binPath= "E:\webserver\memcached.exe -d runservice -p 11218 -m 15"  DisplayName= "Memcached11218" start= auto
sc create  "Memcached11219" binPath= "E:\webserver\memcached.exe -d runservice -p 11219 -m 15"  DisplayName= "Memcached11219" start= auto
sc create  "Memcached11220" binPath= "E:\webserver\memcached.exe -d runservice -p 11220 -m 15"  DisplayName= "Memcached11220" start= auto
sc create  "Memcached11221" binPath= "E:\webserver\memcached.exe -d runservice -p 11221 -m 15"  DisplayName= "Memcached11221" start= auto
sc create  "Memcached11222" binPath= "E:\webserver\memcached.exe -d runservice -p 11222 -m 15"  DisplayName= "Memcached11222" start= auto

As you can see from the example above, you have to choose a different port for each memcache instance you are running.

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