Rumah > Artikel > pembangunan bahagian belakang > PHP无限极分类之数组_PHP教程
<?php $data = array( 1 => array('id' => 1,'name' => 'name1','pid' => 0), 2 => array('id' => 2,'name' => 'name2','pid' => 0), 3 => array('id' => 3,'name' => 'name3','pid' => 1), 4 => array('id' => 4,'name' => 'name4','pid' => 0), 5 => array('id' => 5,'name' => 'name5','pid' => 3), 6 => array('id' => 6,'name' => 'name6','pid' => 3), ); $str = getTree(0); $str = "<select name='term'>" . $str . "</select>"; echo $str; function getTree($id,$spac=0) { $data = array( 1 => array('id' => 1,'name' => 'name1','pid' => 0), 2 => array('id' => 2,'name' => 'name2','pid' => 0), 3 => array('id' => 3,'name' => 'name3','pid' => 1), 4 => array('id' => 4,'name' => 'name4','pid' => 0), 5 => array('id' => 5,'name' => 'name5','pid' => 3), 6 => array('id' => 6,'name' => 'name6','pid' => 3), ); $spac = $spac + 2; static $str; foreach ($data as $k => $v) { if ($v['pid'] == $id) { $arr[] = $v; $str .= "<option value='" . $v['id'] . "'>" . str_repeat(" ",$spac) . "|--" . $v['name'] . "</option>"; getTree($v['id'],$spac); } } return $str; } ?>