how to filter pairs from an array?

[vreesh]

hi all,

 

i'm poring about 2 days over it, but i can't get an sollution

 

I would like to filter pair edges like

<fromID=2 toID=6>
<fromID=6 toID=9>
<...>
<fromID=9 toID=1>

 

from an dynamicly growing and shrinking Array like

Array
(
  [2]=>Inkognito
  [6]=>TheKing
  [9]=>Vister
  [...]=> ...
  [1]=>Dummy
  [count]=>3      //is always there
)

 

the $keys are UserIDs, they are not ordered and not ever complete!

the $values are the Usernames which i have to use for defining nodes like

<Person id=$key name=$value>

 

the last one i do with

 

foreach($array as $key=>$value){
   if ($ikey!=="count"){
      $xmlnode .= '<Person id="'.$key.'" name="'.$value.'"/>';
   }
}

 

but i'm not sure how to get the pairs edges

 

 

 

 

[feidakila]

what is the logic of that pairs edges?

[vreesh]

the logic is for building a graph.

//Nodes
<Person id=2 name=Inkognito>
<Person id=6 name=TheKing>
<...>
<Person id=9 name=Vister>

//Edges
<Edge fromID=2 toID=6>
<Edge fromID=6 toID=9>
<...>
<Edge fromID=9 toID=1>

 

 

[feidakila]

I mean, how do you obtain the edges?? are they fixed value edges?? 2-6, 6-9

 

Sorry but I don't understand how do you obtain the edges  ???

[vreesh]

this array is the second from a two dimensional array.

all entries inside this array are nodes which have to be connected.

 

i cant do it in a for loop (key[$i]  and key[$i+1]) because the keys are not out of (1...n) continuosly.

[sasa]

try

<?php
$test = Array
(
  2=>'Inkognito',
  6=>'TheKing',
  9=>'Vister',
  5=>'sasa',
  1=>'Dummy',
  'count'=>3      //is always there
);
$edge = $test;
unset($edge['count']);
$edge = array_keys($edge);
for ($i = 1; $i < count($edge); $i++){
$out .= "<fromID=".$edge[$i-1]." toID=".$edge[$i].">\n";
}
echo $out;
?>