building arrays while using them

[gmdavis]

I am trying to recurse through an array while also occasionally adding more data to it. The problem I am having is that when I add new data, the array pointer is reset.

sample mock-code:

$datalist = array("a", "d", "g", "l");
while (current($datalist)){ //while there is still a current array item
$v=current($datalist); //current pointer in the array
$n=key($datalist); //put the key into $n

if ($n=="3") {  //this causes an endless loop because pointer is reset
    $newlist = array("4"=>"z", "x", "c", "v");
    $datalist = ($datalist + $newlist); //combines two arrays
}

echo" $n=>$v\n";
next($datalist); //advance the pointer to the next item in the array

}

array_merge() is no good becasue my keys need to be numeric and the later value will not overwrite the original value (which I want), but will be appended.

foreach() operates on a copy of the array so I can't use it.

Any ideas?

[HalfaBee]

My only suggestion is to create and array of the keys of the first array and loop thru them.
array_keys() might help here.

You will of course only loop thru the original array not the array added together during the loop.

HalfaBee

[gmdavis]

Thanks for the idea but I just figured out to do a while loop advancing the array pointer using "next" until it gets to the key defined by $n.

as follows:

    while (key($datalist) != $n){ 
        next($datalist);
    }