Re: Dynamic method calling

Darren Beale wrote:

Hi I'm trying to dynamically choose and call a method from within a class but actually calling a method dynamically does not seem to work whatever I try using php 4.3.3 Hopefully this test script will illustrate my point better, I always get to the "I know we get to here" bit, but there is no other output. Is what I want to achieve possible? regs Darren <?php class foo {

    var $lookup;
        function foo()
    {
        $this->lookup  = array();
    }

    function getItem($entry)
    {
        if (!array_key_exists($entry, $this->lookup))
        {
            print "I know we get to here\r\n";
                       // random attempts at calling the relevant                     // method
                       $this->{"_foo_" . $entry . "()"};
                       $this->{"_foo_" . $entry};
                       $this->${"_foo_" . $entry . "()"};
                       $foo = "_foo_" . $entry . "()";
            $this->$$foo;
                       $foo = "_foo_" . $entry;
            $this->$$foo;
        }
        return $this->lookup[$entry];
    }

    function _foo_bar()
    {           print "bar\r\n";
        $bar = 1;
        $this->lookup["bar"] = $bar;
        unset($bar);
    }

    function _foo_bar2()
    {           print "bar2\r\n";
        $bar2 = 2;
        $this->lookup["bar2"] = $bar2;
        unset($bar2);
    }

} $foo = new foo(); print $foo->getItem("bar2"); ?>

$$ is only for use when you're doing a regular var. In other cases you just add a $. For instance, when accessing a member var, you use: $this->a; To access a dynamic one you use: $a = 'nameOfVar'; $this->$a; For member fuctions: $a = 'nameOfMemberFunction'; $this->$a(); For functions: $a = 'nameOfFunction'; $a(); -- paperCrane <Justin Patrin>