ISSET_ISEMPTY_PROP_OBJ

PHP code

<?php
/*
 * 
 * opcode number: 148
 */
$obj = new A();
if(empty($obj->num)) return 0;
?>

PHP opcodes

Function name: (null)

Compiled variables: !0=$obj

line#opfetchextreturnoperands
60ZEND_FETCH_CLASS  :0'A'
 1NEW  $1:0
 2DO_FCALL_BY_NAME 0  
 3ASSIGN   !0,$1
74ZEND_ISSET_ISEMPTY_PROP_OBJ  ~4!0,'num'
 5JMPZ   ~4,->8
 6RETURN   0
 7JMP   ->8
88RETURN   1