php遞歸優化
標籤(空格分隔): php
通用PHP樹類
<?php
/**
* 通用的樹型類,可以生成任何樹型結構
*/
namespace utils;
class Tree {
/**
* 生成樹型結構所需要的2維數組
* @var array
*/
public $arr = array();
/**
* 生成樹型結構所需修飾符號,可以換成圖片
* @var array
*/
public $icon = array('│', '├', '└');
public $nbsp = " ";
private $str ='';
/**
* @access private
*/
public $ret = '';
public $org = [];
/**
* 構造函數,初始化類
* @param array 2維數組,例如:
* array(
* 1 => array('id'=>'1','parentid'=>0,'name'=>'一級欄目一'),
* 2 => array('id'=>'2','parentid'=>0,'name'=>'一級欄目二'),
* 3 => array('id'=>'3','parentid'=>1,'name'=>'二級欄目一'),
* 4 => array('id'=>'4','parentid'=>1,'name'=>'二級欄目二'),
* 5 => array('id'=>'5','parentid'=>2,'name'=>'二級欄目三'),
* 6 => array('id'=>'6','parentid'=>3,'name'=>'三級欄目一'),
* 7 => array('id'=>'7','parentid'=>3,'name'=>'三級欄目二')
* )
*/
public function init($arr=array()) {
$this->arr = $arr;
$this->ret = '';
return is_array($arr);
}
/**
* 得到父級數組
* @param int
* @return array
*/
public function get_parent($myid) {
$newarr = array();
if (!isset($this->arr[$myid]))
return false;
$pid = $this->arr[$myid]['parentid'];
$pid = $this->arr[$pid]['parentid'];
if (is_array($this->arr)) {
foreach ($this->arr as $id => $a) {
if ($a['parentid'] == $pid)
$newarr[$id] = $a;
}
}
return $newarr;
}
/**
* 得到子級數組
* @param int
* @return array
*/
public function get_child($myid) {
$a = $newarr = array();
if (is_array($this->arr)) {
foreach ($this->arr as $id => $a) {
if ($a['parentid'] == $myid)
$newarr[$id] = $a;
}
}
return $newarr ? $newarr : false;
}
/**
* 得到當前位置數組
* @param int
* @return array
*/
public function get_pos($myid, &$newarr) {
$a = array();
if (!isset($this->arr[$myid]))
return false;
$newarr[] = $this->arr[$myid];
$pid = $this->arr[$myid]['parentid'];
if (isset($this->arr[$pid])) {
$this->get_pos($pid, $newarr);
}
if (is_array($newarr)) {
krsort($newarr);
foreach ($newarr as $v) {
$a[$v['id']] = $v;
}
}
return $a;
}
/**
* 得到樹型結構
* @param int ID,表示獲得這個ID下的所有子級
* @param string 生成樹型結構的基本代碼,例如:"<option value=\$id \$selected>\$spacer\$name</option>"
* @param int 被選中的ID,比如在做樹型下拉框的時候需要用到
* @return string
*/
public function get_tree($myid, $str, $sid = 0, $adds = '', $str_group = '') {
$number = 1;
//一級欄目
$child = $this->get_child($myid);
if (is_array($child)) {
$total = count($child);
foreach ($child as $id => $value) {
$j = $k = '';
if ($number == $total) {
$j .= $this->icon[2];
} else {
$j .= $this->icon[1];
$k = $adds ? $this->icon[0] : '';
}
$spacer = $adds ? $adds . $j : '';
$selected = $id == $sid ? 'selected' : '';
@extract($value);
$parentid == 0 && $str_group ? eval("\$nstr = \"$str_group\";") : eval("\$nstr = \"$str\";");
$this->ret .= $nstr;
$nbsp = $this->nbsp;
$this->get_tree($id, $str, $sid, $adds . $k . $nbsp, $str_group);
$number++;
}
}
return $this->ret;
}
/**
* 得到樹型結構
* @param int ID,表示獲得這個ID下的所有子級
* @param string 生成樹型結構的基本代碼,例如:"<option value=\$id \$selected>\$spacer\$name</option>"
* @param int 被選中的ID,比如在做樹型下拉框的時候需要用到
* @return string
*/
public function get_order_org($myid) {
$number = 1;
//一級欄目
$child = $this->get_child($myid);
if (is_array($child)) {
foreach ($child as $id => $value) {
$name = $value['bmming'];
if($value['level'] > 1) {
$name = '|' . str_repeat('__', $value['level']) . ' ' . $name;
}
$this->org[] = ['value'=> $value['id'], 'text' => $name] ;
$this->get_order_org($value['id']);
$number++;
}
}
return $this->org;
}
/**
* 得到樹型結構數組
* @param int ID,表示獲得這個ID下的所有子級
* @param string 生成樹型結構的基本代碼,例如:"<option value=\$id \$selected>\$spacer\$name</option>"
* @param int 被選中的ID,比如在做樹型下拉框的時候需要用到
* @return array
*/
public function get_tree_array($myid, $str = '', $sid = 0, $adds = '', $str_group = '') {
$retarray = array();
//一級欄目數組
$child = $this->get_child($myid);
if (is_array($child)) {
//數組長度
foreach ($child as $id => $value) {
@extract($value);
$retarray[$value['id']] = $value;
$retarray[$value['id']]["child"] = $this->get_tree_array($id, '');
}
}
return $retarray;
}
/**
* 同上一方法類似,但允許多選
*
* @param $myid
* @param $str
* @param int $sid
* @param string $adds
* @return string
*/
public function get_tree_multi($myid, $str, $sid = 0, $adds = '') {
$number = 1;
$child = $this->get_child($myid);
if (is_array($child)) {
$total = count($child);
foreach ($child as $id => $a) {
$j = $k = '';
if ($number == $total) {
$j .= $this->icon[2];
} else {
$j .= $this->icon[1];
$k = $adds ? $this->icon[0] : '';
}
$spacer = $adds ? $adds . $j : '';
$selected = $this->have($sid, $id) ? 'selected' : '';
@extract($a);
eval("\$nstr = \"$str\";");
$this->ret .= $nstr;
$this->get_tree_multi($id, $str, $sid, $adds . $k . ' ');
$number++;
}
}
return $this->ret;
}
/**
* @param integer $myid 要查詢的ID
* @param string $str 第一種HTML代碼方式
* @param string $str2 第二種HTML代碼方式
* @param integer $sid 默認選中
* @param string $adds 前綴
* @return string
*/
public function get_tree_category($myid, $str, $str2, $sid = 0, $adds = '') {
$number = 1;
$child = $this->get_child($myid);
if (is_array($child)) {
$total = count($child);
foreach ($child as $id => $a) {
$j = $k = '';
if ($number == $total) {
$j .= $this->icon[2];
} else {
$j .= $this->icon[1];
$k = $adds ? $this->icon[0] : '';
}
$spacer = $adds ? $adds . $j : '';
$selected = $this->have($sid, $id) ? 'selected' : '';
@extract($a);
if (empty($html_disabled)) {
eval("\$nstr = \"$str\";");
} else {
eval("\$nstr = \"$str2\";");
}
$this->ret .= $nstr;
$this->get_tree_category($id, $str, $str2, $sid, $adds . $k . ' ');
$number++;
}
}
return $this->ret;
}
/**
* 同上一類方法,jquery treeview 風格,可伸縮樣式(需要treeview插件支持)
* @param $myid 表示獲得這個ID下的所有子級
* @param $effected_id 需要生成treeview目錄數的id
* @param $str 末級樣式
* @param $str2 目錄級別樣式
* @param $showlevel 直接顯示層級數,其餘爲異步顯示,0爲全部限制
* @param $style 目錄樣式 默認 filetree 可增加其他樣式如'filetree treeview-famfamfam'
* @param $currentlevel 計算當前層級,遞歸使用 適用改函數時不需要用該參數
* @param $recursion 遞歸使用 外部調用時爲FALSE
* @return string
*/
function get_treeview($myid, $effected_id='example', $str="<span class='file'>\$name</span>", $str2="<span class='folder'>\$name</span>", $showlevel = 0, $style='filetree ', $currentlevel = 1, $recursion=FALSE) {
$child = $this->get_child($myid);
if (!defined('EFFECTED_INIT')) {
$effected = ' id="' . $effected_id . '"';
define('EFFECTED_INIT', 1);
} else {
$effected = '';
}
$placeholder = '<ul><li><span class="placeholder"></span></li></ul>';
if (!$recursion)
$this->str .='<ul' . $effected . ' class="' . $style . '">';
foreach ($child as $id => $a) {
@extract($a);
if ($showlevel > 0 && $showlevel == $currentlevel && $this->get_child($id))
$folder = 'hasChildren'; //如設置顯示層級模式@2011.07.01
$floder_status = isset($folder) ? ' class="' . $folder . '"' : '';
$this->str .= $recursion ? '<ul><li' . $floder_status . ' id=\'' . $id . '\'>' : '<li' . $floder_status . ' id=\'' . $id . '\'>';
$recursion = FALSE;
//判斷是否爲終極欄目
if ($child == 1) {
eval("\$nstr = \"$str2\";");
$this->str .= $nstr;
if ($showlevel == 0 || ($showlevel > 0 && $showlevel > $currentlevel)) {
$this->get_treeview($id, $effected_id, $str, $str2, $showlevel, $style, $currentlevel + 1, TRUE);
} elseif ($showlevel > 0 && $showlevel == $currentlevel) {
$this->str .= $placeholder;
}
} else {
eval("\$nstr = \"$str\";");
$this->str .= $nstr;
}
$this->str .=$recursion ? '</li></ul>' : '</li>';
}
if (!$recursion)
$this->str .='</ul>';
return $this->str;
}
/**
* 同上一類方法,jquery treeview 風格,可伸縮樣式(需要treeview插件支持)
* @param $myid 表示獲得這個ID下的所有子級
* @param $effected_id 需要生成treeview目錄數的id
* @param $str 末級樣式
* @param $str2 目錄級別樣式
* @param $showlevel 直接顯示層級數,其餘爲異步顯示,0爲全部限制
* @param $style 目錄樣式 默認 filetree 可增加其他樣式如'filetree treeview-famfamfam'
* @param $currentlevel 計算當前層級,遞歸使用 適用改函數時不需要用該參數
* @param $recursion 遞歸使用 外部調用時爲FALSE
* @param $dropdown 有子元素時li的class
*/
function get_treeview_menu($myid,$effected_id='example', $str="<span class='file'>\$name</span>", $str2="<span class='folder'>\$name</span>", $showlevel = 0, $ul_class="" ,$li_class="" , $style='filetree ', $currentlevel = 1, $recursion=FALSE, $dropdown='hasChild') {
$child = $this->get_child($myid);
if (!defined('EFFECTED_INIT')) {
$effected = ' id="' . $effected_id . '"';
define('EFFECTED_INIT', 1);
} else {
$effected = '';
}
$placeholder = '<ul><li><span class="placeholder"></span></li></ul>';
if (!$recursion){
$this->str .='<ul' . $effected . ' class="' . $style . '">';
}
foreach ($child as $id => $a) {
@extract($a);
if ($showlevel > 0 && is_array($this->get_child($a['id']))){
$floder_status = " class='$dropdown $li_class'";
}else{
$floder_status = " class='$li_class'";;
}
$this->str .= $recursion ? "<ul class='$ul_class'><li $floder_status id= 'menu-item-$id'>" : "<li $floder_status id= 'menu-item-$id'>";
$recursion = FALSE;
//判斷是否爲終極欄目
if ($this->get_child($a['id'])) {
eval("\$nstr = \"$str2\";");
$this->str .= $nstr;
if ($showlevel == 0 || ($showlevel > 0 && $showlevel > $currentlevel)) {
$this->get_treeview_menu($a['id'], $effected_id, $str, $str2, $showlevel, $ul_class ,$li_class ,$style, $currentlevel + 1, TRUE);
} elseif ($showlevel > 0 && $showlevel == $currentlevel) {
//$this->str .= $placeholder;
}
} else {
eval("\$nstr = \"$str\";");
$this->str .= $nstr;
}
$this->str .=$recursion ? '</li></ul>' : '</li>';
}
if (!$recursion)
$this->str .='</ul>';
return $this->str;
}
/**
* 獲取子欄目json
* Enter description here ...
* @param unknown_type $myid
*/
public function creat_sub_json($myid, $str='') {
$sub_cats = $this->get_child($myid);
$n = 0;
if (is_array($sub_cats))
foreach ($sub_cats as $c) {
$data[$n]['id'] = iconv(CHARSET, 'utf-8', $c['catid']);
if ($this->get_child($c['catid'])) {
$data[$n]['liclass'] = 'hasChildren';
$data[$n]['children'] = array(array('text' => ' ', 'classes' => 'placeholder'));
$data[$n]['classes'] = 'folder';
$data[$n]['text'] = iconv(CHARSET, 'utf-8', $c['catname']);
} else {
if ($str) {
@extract(array_iconv($c, CHARSET, 'utf-8'));
eval("\$data[$n]['text'] = \"$str\";");
} else {
$data[$n]['text'] = iconv(CHARSET, 'utf-8', $c['catname']);
}
}
$n++;
}
return json_encode($data);
}
private function have($list, $item) {
return(strpos(',,' . $list . ',', ',' . $item . ','));
}
}