#12692 [Com]: The current() function does not return references

[bugs dot php dot net-2004 dot 03 dot 27 at m-me dot dk]

 ID:               12692
 Comment by:       bugs dot php dot net-2004 dot 03 dot 27 at m-me dot dk
 Reported By:      metz at studenten dot net
 Status:           Bogus
 Bug Type:         Arrays related
 Operating System: Linux 2.4.2
 PHP Version:      4.0.6
 New Comment:

Any idea if this is ever gonna be fixed?


Previous Comments:
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[2001-08-10 15:57:42] [EMAIL PROTECTED]

That's intentional

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[2001-08-10 13:27:43] metz at studenten dot net

test script:



    // Class definiton used for reference testing

    class Test

    {

        var $t = "x";



        function Test(){}



        function get_t()

        {

            return($this->t);

        }



        function set_t($t)

        {

            $this->t = $t;

        }

    }



    // Array container reference test



    $ref_one       = new Test();

    $ref_two       = new Test();

    $ref_three     = new Test();



    $ref_one->t    = "one";

    $ref_two->t    = "two";

    $ref_three->t  = "three";



    $refs          = array();

    $refs["one"]   = &$ref_one;

    $refs["two"]   = &$ref_two;

    $refs["three"] = &$ref_three;



    print("<B>Test 7-1: (start)</B><BR>\n");

    reset($refs);

    for($idx = 0; $idx < count($refs); $idx++)

    {

        $key = key($refs);

        $tmp = &$refs[$key];



        print("${key} => " . $tmp->get_t() . "<BR>\n");

        next($refs);

    }

    print("<BR>\n");



    print("<B>Test 7-2: (using &amp;current() to

adjust)</B><BR>\n");

    reset($refs);

    for($idx = 0; $idx < count($refs); $idx++)

    {

        $key = key($refs);

        $tmp = &current($refs);



        print("Setting: ${key} => ${idx}<BR>\n");

        $tmp->set_t($idx);

        next($refs);

    }

    reset($refs);



    print("<B>Result:</B><BR>\n");

    for($idx = 0; $idx < count($refs); $idx++)

    {

        $key = key($refs);

        $tmp = &$refs[$key];



        print("${key} => " . $tmp->get_t() . "<BR>\n");

        next($refs);

    }

    print("<BR>\n");



    print("<B>Test 7-3: (using direct method to

adjust)</B><BR>\n");

    reset($refs);

    for($idx = 0; $idx < count($refs); $idx++)

    {

        $key = key($refs);

        $tmp = &$refs[$key];



        print("Setting: ${key} => ${idx}<BR>\n");

        $tmp->set_t($idx);

        next($refs);

    }

    reset($refs);



    print("<B>Result:</B><BR>\n");

    for($idx = 0; $idx < count($refs); $idx++)

    {

        $key = key($refs);

        $tmp = &$refs[$key];



        print("${key} => " . $tmp->get_t() . "<BR>\n");

        next($refs);

    }

    print("<BR>\n");

------------------------------------------------------------------------

[2001-08-10 13:21:25] metz at studenten dot net

When filling an array with reference to objects

the current() function does not return the reference to the

object but a copy of the object.



i.e.

   $ref = &current($some_array);

returns a copy



work around:

   $ref = &$some_array[key($some_array)];

returns the reference



Is this a bug or a difference in implementation?

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Edit this bug report at http://bugs.php.net/?id=12692&edit=1