internals2-php-opcodes-php-fetch-rw-9

  • Opcode Descriptions and
    Examples

    • FETCH_RW

  • FETCH_RW

    • FETCH_RW

    FETCH_RW

    PHP code

    <?php
    /*
     * Fetch the value of the varible of "name" to assign it to a variable?
     * opcode number: 86
     */
    $x = 1;
    $a = 'x';
    $    $a++;
    ?>

    PHP opcodes

    Function name: (null)

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

    line # op fetch ext return operands
    6 0 ASSIGN       !0,1
    7 1 ASSIGN       !1,’x’
    8 2 FETCH_RW local   $2 !1
      3 POST_INC     ~3 $2
      4 FREE       ~3
    9 5 RETURN       1