I am a little bit confused by the PHP function declare.
What exactly is a single tick? I thought a tick equals one line of code?
But if I use:
function myfunc() {
print "Tick";
}
register_tick_function("myfunc");
declare(ticks=1) {
echo 'foo!bar';
}
The script prints:
"Tick" 2 Times??
You get a tick for each line ; and each block {} Try that:
declare(ticks=1) echo 'foo!bar';
No block, no extra tick.
declare(ticks=1) {{ echo 'foo!bar'; }}
More extraneous blocks = more ticks.
PS: by the way, ticks are quite the exotic feature and they're only useful in a few extremely rare situations. They are not equivalent to threading or anything. If, for you, ticks are the solution to a problem then you should post about your problem in another question because it's probably not the right solution to it.
You are on the right track as to what a tick is.
http://www.tuxradar.com/practicalphp/4/21/0
Put simply, a tick is a special event that occurs internally in PHP each time it has executed a certain number of statements. These statements are internal to PHP and loosely correspond to the statements in your script. You can control how many statements it takes to set off a tick using the declare() function, and you can register functions to execute when a tick occurs by using the register_tick_function() function. As mentioned already, the syntax for declare is very unusual, so be ready for a shock!
