Online PHP editor | output for WCW12

@ 2013-02-22T05:42:58Z

<?php

function find_parent($ar, $id='id', $pid='pid') {
  foreach($ar as $v) $t[$v[$id]] = $v;
  foreach ($t as $k => $item){
    if( $item[$pid] ){
      if( ! isset($t[$item[$pid]]['parent'][$item[$pid]]) )
         $t[$item[$id]]['parent'][$item[$pid]] =& $t[$item[$pid]];
    }
  }
  return $t;
}


 
function find_child($ar, $id='id', $pid='pid') {
  foreach($ar as $v) $t[$v[$id]] = $v;
  foreach ($t as $k => $item){
    if( $item[$pid] ) {
      $t[$item[$pid]]['child'][$item[$id]] =& $t[$k];
    }
  }
  return $t;
}

    $data = array(
      array('ID'=>1, 'PARENT'=>0, 'NAME'=>'祖父'),
      array('ID'=>2, 'PARENT'=>1, 'NAME'=>'父亲'),
      array('ID'=>3, 'PARENT'=>1, 'NAME'=>'叔伯'),
      array('ID'=>4, 'PARENT'=>2, 'NAME'=>'自己'),
      array('ID'=>5, 'PARENT'=>4, 'NAME'=>'儿子'),
    );

    $p = find_parent($data, 'ID', 'PARENT');
    $c = find_child($data, 'ID', 'PARENT');
    Print_r ($c);

Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Array ( [1] => Array ( [ID] => 1 [PARENT] => 0 [NAME] => 祖父 [child] => Array ( [2] => Array ( [ID] => 2 [PARENT] => 1 [NAME] => 父亲 [child] => Array ( [4] => Array ( [ID] => 4 [PARENT] => 2 [NAME] => 自己 [child] => Array ( [5] => Array ( [ID] => 5 [PARENT] => 4 [NAME] => 儿子 ) ) ) ) ) [3] => Array ( [ID] => 3 [PARENT] => 1 [NAME] => 叔伯 ) ) ) [2] => Array ( [ID] => 2 [PARENT] => 1 [NAME] => 父亲 [child] => Array ( [4] => Array ( [ID] => 4 [PARENT] => 2 [NAME] => 自己 [child] => Array ( [5] => Array ( [ID] => 5 [PARENT] => 4 [NAME] => 儿子 ) ) ) ) ) [3] => Array ( [ID] => 3 [PARENT] => 1 [NAME] => 叔伯 ) [4] => Array ( [ID] => 4 [PARENT] => 2 [NAME] => 自己 [child] => Array ( [5] => Array ( [ID] => 5 [PARENT] => 4 [NAME] => 儿子 ) ) ) [5] => Array ( [ID] => 5 [PARENT] => 4 [NAME] => 儿子 ) )

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