POST_INC_OBJ

PHP code

<?php
/*
 * Increment the property value specified by prop-name and store the original value into result.
 * opcode number: 134
 */
$obj = new A();
$obj->num++;
?>

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_POST_INC_OBJ  ~5!0,'num'
 5FREE   ~5
86RETURN   1