アップデート:
$categoryArr=array(array("parentid"=>1,"title"=>"Father 1","childof"=>0),array("parentid"=>2,"title"=>"Son 1.2","childof"=>1),array("parentid"=>3,"title"=>"Grandson 1.2.3","childof"=>2),array("parentid"=>4,"title"=>"Son 1.4","childof"=>1),array("parentid"=>5,"title"=>"Son 1.5","childof"=>1),array("parentid"=>6,"title"=>"Son 1.6","childof"=>1),array("parentid"=>7,"title"=>"Grandson 1.5.7","childof"=>5),array("parentid"=>8,"title"=>"Father 8","childof"=>0),array("parentid"=>9,"title"=>"Son 8.9","childof"=>8),array("parentid"=>10,"title"=>"Grandgrandson 1.2.3.10","childof"=>3));
function rebuild($data,$find)
{
$cache=array_filter($data,create_function('$n','return $n["childof"]=='.$find.';'));
$rt=array();
foreach($cache as $node)
{
$rt[]=$node;
$rt=array_merge($rt,rebuild($data,$node["parentid"]));
}
return $rt;
}
$cache=array_filter($categoryArr,function($n){return $n["childof"]==0;});
$base=array();
foreach($cache as $root)
{
$base[]=array_merge(array($root),rebuild($categoryArr,$root["parentid"]));
}
$xml=new DOMDocument("1.0","UTF-8");
$xml->formatOutput=true; // just to debug
$root=$xml->createElement("root");
$xml->appendChild($root);
foreach($base as $list)
{
$table=$xml->createElement("table");
$root->appendChild($table);
$rows=ceil(count($list)/4);//change 4 to whatever column you need
foreach(range(1,$rows) as $idx)
{
$tr=$xml->createElement("tr");
$table->appendChild($tr);
}
$cur=0;
foreach($list as $node)
{
if($cur>=$rows) $cur=0;
$td=$xml->createElement("td");
$td->appendChild($xml->createTextNode($node["title"]));
$table->getElementsByTagName("tr")->item($cur)->appendChild($td);
$cur++;
}
}
echo $xml->saveXML();
出力:
<?xml version="1.0" encoding="UTF-8"?>
<root>
<table>
<tr>
<td>Father 1</td>
<td>Grandson 1.2.3</td>
<td>Son 1.4</td>
<td>Grandson 1.5.7</td>
</tr>
<tr>
<td>Son 1.2</td>
<td>Grandgrandson 1.2.3.10</td>
<td>Son 1.5</td>
<td>Son 1.6</td>
</tr>
</table>
<table>
<tr>
<td>Father 8</td>
<td>Son 8.9</td>
</tr>
</table>
</root>
PSの使用DOMDocument
は必須ではありません。テーブルごとのアイテム数はすでにわかっているので、各テーブルセルの位置を計算して直接出力することは可能ですが、私にとってDOMDocument
は怠惰です:)
最初の試み:
エレガントな解決策ではないかもしれませんが、うまくいくはずです:
$categoryArr=array(array("parentid"=>1,"title"=>"Father","childof"=>0),array("parentid"=>2,"title"=>"Son 2","childof"=>1),array("parentid"=>3,"title"=>"Grandson 2.3","childof"=>2),array("parentid"=>4,"title"=>"Son 4","childof"=>1),array("parentid"=>5,"title"=>"Son 5","childof"=>1),array("parentid"=>6,"title"=>"Son 6","childof"=>1),array("parentid"=>7,"title"=>"Grandson 5.6","childof"=>5));
$xml=new DOMDocument("1.0","UTF-8");
$xml->formatOutput=true; // just to debug
$root=$xml->createElement("table");
$xml->appendChild($root);
foreach(range(1,ceil(count($categoryArr)/4)) as $idx) // change 4 to whatever column you need
{
$tr=$xml->createElement("tr");
$root->appendChild($tr);
}
function addNode(&$xml,$data,$currID,&$currRow)
{
if($currRow>=$xml->getElementsByTagName("tr")->length) $currRow=0;
$cache=array_filter($data,create_function('$n','return $n["parentid"]=='.$currID.';'));
if(count($cache)==1)
{
$td=$xml->createElement("td");
$cache=array_pop($cache);
$td->appendChild($xml->createTextNode($cache["title"]));
$xml->getElementsByTagName("tr")->item($currRow)->appendChild($td);
$currRow+=1;
}
$cache=array_filter($data,create_function('$n','return $n["childof"]=='.$currID.";"));
foreach($cache as $node)
{
addNode($xml,$data,$node["parentid"],$currRow);
}
}
$cur=0;
addNode($xml,$categoryArr,0,$cur);
echo $xml->saveXML();
出力:
<?xml version="1.0" encoding="UTF-8"?>
<table>
<tr>
<td>Father</td>
<td>Grandson 2.3</td>
<td>Son 5</td>
<td>Son 6</td>
</tr>
<tr>
<td>Son 2</td>
<td>Son 4</td>
<td>Grandson 5.6</td>
</tr>
</table>
テストする「実際の」データがないので、何か問題がある場合はお知らせください。