PHP using Declare ? What is a tick?

Question

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??

Answer 1

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.