PHP recursive method to implement infinite classification instance code

Source: Internet
Author: User

  This article mainly introduces the PHP recursive method to implement infinite classification instance code, the need for friends can refer to the following

Array:   Code as follows: $items = Array ( array (' id ' => 1, ' pid ' => 0, ' name ' => ' Level One '),  array (' id ' => 1 1, ' pid ' => 0, ' name ' => ' www.jb51.net level '),  array (' id ' => 2, ' pid ' => 1, ' name ' => ' two class '), &nbs P;array (' id ' =>, ' pid ' =>, ' name ' => ' Level Two '),  array (' ID ' => 3, ' pid ' => 1, ' name ' => ' two level 23 ') ),  array (' id ' =>, ' pid ' =>, ' name ' => ' Level Two '),  array (' id ' =>, ' pid ' =>, ' name ' =& Gt ' Level three '),  array (' id ' => 9, ' pid ' => 1, ' name ' => ' two level 25 ');     functions:   Code as follows: function Formattree ($array, $pid = 0) {  $arr = array ();   $tem = Array ();  fo Reach ($array as $v) {  if ($v [' pid '] = = $pid) {    $tem = Formattree ($array, $v [' id ']);     &NB Sp                  //Determine if there is a sub array     $tem && $v [' son '] = $tem;     $arr [] = $v;  }    return $arr; }  
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