INIT_METHOD_CALL

PHP code

<?php
/*
 * Prepare for a method call.  Followed by DO_FCALL.
 * opcode number: 112
 */
class A {
  var $num;
    function incrementNum(){
    $num++;
  }
}

$obj = new A();
$obj->incrementNum();

?>

PHP opcodes

Function name: (null)

Compiled variables: !0=$obj

line	#	op	fetch	ext	return	operands
6	0	NOP
13	1	ZEND_FETCH_CLASS			:1	'A'
	2	NEW			$2	:1
	3	DO_FCALL_BY_NAME		0
	4	ASSIGN				!0,$2
14	5	ZEND_INIT_METHOD_CALL				!0,'incrementNum'
	6	DO_FCALL_BY_NAME		0
16	7	RETURN				1

Function name: incrementNum

Compiled variables: !0=$num

line	#	op	fetch	ext	return	operands
9	0	POST_INC			~0	!0
	1	FREE				~0
10	2	RETURN				null