FETCH_OBJ_FUNC_ARG

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PHP code

  <?php
 
 include  './classA.php' ;

function  foo (& $x )
{
  print( $x );
}

 $z  =  "foo" ;

 $obj  = new  A ();
print  $obj -> num ;
 $z ( $obj -> num );

 ?>

PHP opcodes

Function name: (null)

Compiled variables: !0=$z, !1=$obj

line	#	op	ext	return	operands
6	0	INCLUDE_OR_EVAL			'.%2FclassA.php',INCLUDE
8	1	NOP
13	2	ASSIGN			!0,'foo'
15	3	ZEND_FETCH_CLASS		:2	'A'
	4	NEW		$3	:2
	5	DO_FCALL_BY_NAME	0
	6	ASSIGN			!1,$3
16	7	FETCH_OBJ_R		$6	!1,'num'
	8	PRINT		~7	$6
	9	FREE			~7
17	10	INIT_FCALL_BY_NAME			!0
	11	FETCH_OBJ_FUNC_ARG		$8	!1,'num'
	12	SEND_VAR			$8
	13	DO_FCALL_BY_NAME	1
19	14	RETURN			1

Function name: foo

Compiled variables: !0=$x

line	#	op	return	operands
8	0	RECV		1
10	1	PRINT	~0	!0
	2	FREE		~0
11	3	RETURN		null

Function name: foo

Compiled variables: !0=$x

line	#	op	return	operands
8	0	RECV		1
10	1	PRINT	~0	!0
	2	FREE		~0
11	3	RETURN		null