PHP Opcode Descriptions and Examples TICKS

TICKS

PHP code

 <?php
/*
 * 
 * opcode number: 105
 */
// A function that records the time when it is called
function profile()
{
   echo "profile function is called\n";
}

// Set up a tick handler
register_tick_function("profile");

// Initialize the function before the declare block
profile();

// Run a block of code, throw a tick every 2nd statement
declare(ticks=2) {
   for ($x = 0; $x < 10; ++$x) {
         echo "hello world\n";
   }
}
?>

PHP opcodes

Function name: (null)

Compiled variables: !0=$x

line	#	op	ext	return	operands
7	0	NOP
13	1	SEND_VAL			'profile'
	2	DO_FCALL	1		'register_tick_function'
16	3	DO_FCALL	0		'profile'
20	4	ASSIGN			!0,0
	5	IS_SMALLER		~3	!0,10
	6	JMPZNZ	9		~3,->13
	7	PRE_INC			!0
	8	JMP			->5
21	9	ECHO			'hello+world%0A'
	10	TICKS			2
22	11	TICKS			2
	12	JMP			->7
	13	TICKS			2
23	14	TICKS			2
24	15	RETURN			1

Function name: profile

Compiled variables: none

line	#	op	fetch	ext	return	operands
9	0	ECHO				'profile+function+is+called%0A'
10	1	RETURN				null