Php/docs/internals2.opcodes.fetch-obj-rw

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FETCH_OBJ_RW

PHP code

<?php/* * Fetch the "prop-name" property value of this object. * opcode number: 88 */$x = new A();$a = 'x';$$a->num++;?>

PHP opcodes

Function name: (null)

Compiled variables: !0=$x, !1=$a

line # op fetch ext return operands
6 0 ZEND_FETCH_CLASS     :0 'A'
  1 NEW     $1 :0
  2 DO_FCALL_BY_NAME   0    
  3 ASSIGN       !0,$1
7 4 ASSIGN       !1,'x'
8 5 FETCH_RW local   $5 !1
  6 ZEND_POST_INC_OBJ     ~7 $5,'num'
  7 FREE       ~7
9 8 RETURN       1