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

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FETCH_OBJ_R

PHP code

<?php/* * Fetch the "prop-name" property value of this object.  Read-only? * opcode number: 82 */$x = new A();$a = 'x';echo $$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_R local   $5 !1
  6 FETCH_OBJ_R     $6 $5,'num'
  7 ECHO       $6
9 8 RETURN       1