Php/docs/internals2.opcodes.ticks

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• Opcode Descriptions and Examples
• TICKS

TICKS

PHP code

<?php/* *  * opcode number: 105 */// A function that records the time when it is calledfunction profile(){   echo "profile function is called\n";}// Set up a tick handlerregister_tick_function("profile");// Initialize the function before the declare blockprofile();// Run a block of code, throw a tick every 2nd statementdeclare(ticks=2) {   for ($x = 0; $x < 10; ++$x) {         echo "hello world\n";   }}?>

PHP opcodes

Function name: (null)

Compiled variables: !0=$x

line	#	op	fetch	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