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