Cooperative multitasking using coroutines (in PHP!)
Cooperative multitasking using coroutines (in PHP!) 22. December 2012 One of the large new features in PHP 5.5 will be support for generators and coroutines. Generators are already sufficiently covered by the documentation and various other blog posts (like this one or this one. Coroutines on the other hand have received relatively little attention. The reason is that coroutines are both a lot mor
Supercolliding a PHP array
28. December 2011 Did you know that inserting 2^16 = 65536 specially crafted values into a normal PHP array can take 30 seconds? Normally this would take only 0.01 seconds. This is the code to reproduce it: $size = pow(2, 16); // 16 is just an example, could also be 15 or 17 $startTime = microtime(true); $array = array(); for ($key = 0, $maxKey = ($size - 1) * $size; $key <= $maxKey; $key += $size
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