Příručka stylu psaní

Pro inspiraci:

• http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml
• http://www.kernel.org/doc/Documentation/CodingStyle
• http://en.wikipedia.org/wiki/Indent_style#K.26R_style]

Static vs. normal methods/members/variables

In PHP, static is slower (see http://stackoverflow.com/questions/1472721/php-performance-of-static-methods-vs-functions).

Try this example:

<?php	
 class Normal {
		public $x=0;
	}
 	
	class Statik {
		public static $x=0;
	}
 	
	$limit=50000;
	$mem1=memory_get_usage();
	$time1=microtime(true);
	$normal=new Normal();
	echo "Normal object test:
";
 	
	for ($i=0; $i<$limit; $i++) {
	 $normal->x=$normal->x+$i; 
 	
	}
	echo $normal->x."
";
 	
	$mem2=memory_get_usage();
	$time2=microtime(true);
 	
	echo "Static object test:
";
 	
	for ($i=0; $i<$limit; $i++) {
	 Statik::$x=Statik::$x+$i; 
	}
 	
	echo Statik::$x."
";
 	
	$mem3=memory_get_usage();
	$time3=microtime(true);
		
	printf("Normal: Memory=%d time=%f
", $mem2-$mem1, $time2-$time1);
	printf("Static: Memory=%d time=%f
", $mem3-$mem2, $time3-$time2);
	?>

Result

Normal: Memory=728 time=0.049930
Static: Memory=220 time=0.057258