The Linux Page

automatic

stream_socket_client() fails with no errors...

Today I had a weird one.

The PHP function named stream_socket_client(), used to create a socket to communicate with another computer over a network, may return $errno = 0 and $errstr = "".

The PHP reference actually mentions the problem:

On failure the errno and errstr arguments will be populated with the actual system level error that occurred in the system-level connect() call. If the value returned in errno is 0 and the function returned FALSE, it is an indication that the error occurred before the connect() call. This is most likely due to a problem initializing the socket. ...

C++ automatic optimizations

Once in a while I check how the compilers are behaving in such and such situations to make sure that when I wrote code it gets properly optimized. Today I was surprised as I tried to put a break point of a variable and it looked like the compiler wasn't using it. Indeed, the optimizer 100% removed the variable from the final code. Quite interesting since trying to reverse engineer this assembly language would probably end up using a goto statement... (ouch!)

The code goes more or less like this:

[toc hidden:1]

Changes to a Drupal theme & ThemeKey

I use Drupal for most of my sites. I use it in many different ways and it has been working real good for me.

On one of the sites, I use the ThemeKey module to select a different theme once you are logged in. This means, when I want to switch themes, that one theme selected for logged in users sticks, whether you disable it or not, it remains selected by the system.

And?

Well... one thing sticks from themes, their .info file. You just cannot refresh the cache properly unless you disable the theme, then re-enable it. (By the way, when disabled, don't go to the Blocks administration screen ...

GNU Free Documentation License

                GNU Free Documentation License
                 Version 1.3, 3 November 2008


 Copyright (C) 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
     
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

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