jmpznz-Phpdoc专题

JMPZNZ

PHP code

<?php
/*
 * Jump to the address given in the operands if the value is zero;
 * jump to the address given in extended data if nonzero.
 * opcode number: 45
 */
for($i=0; $i<3; $i++){ 
    echo "hi";
}
?>

PHP opcodes

Function name: (null)

Compiled variables: !0=$i

line	#	op	ext	return	operands
6	0	ASSIGN			!0,0
	1	IS_SMALLER		~1	!0,3
	2	JMPZNZ	6		~1,->8
	3	POST_INC		~2	!0
	4	FREE			~2
	5	JMP			->1
7	6	ECHO			'hi'
8	7	JMP			->3
9	8	RETURN			1