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Detailed introduction to PHP's unlimited classification and support for outputting tree diagram_PHP Tutorial
Detailed introduction to PHP's unlimited classification and support for outputting tree diagram_PHP Tutorial
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Release: 2016-07-21 15:05:30
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/** * Universal tree class that can generate any tree structure */ class tree { /** * 2-dimensional array required to generate tree structure * @var array */ var $arr = array();
/** * Modification symbols required to generate a tree structure, which can be replaced by images * @var array */ var $icon = array('│','├','└');
/** * Get the parent array * @param int * @return array */ function get_parent($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 $newarr; }
/** * Get the child array * @param int * @return array */ function get_child($myid) { $a = $newarr = array(); if(is_array($this->arr)) { foreach($this->arr as $id => $a) { if($a['parentid'] == $myid) $newarr[$id] = $a; } } return $newarr ? $newarr : false; }
/** * Get the current position array * @param int * @return array */ function get_pos($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; }
/** * ---------------------------------------- * Get tree structure * ---------------------------------------- * @author Midnight(Yang Yunzhou) , yangyunzhou@foxmail.com * @param $myid means to get all the children under this ID * @param $str generates the basic code of the tree structure, for example: "
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