PHP的一些方法记录

递归查询部门下所有子部门

    // 递归查询负责的子部门（AI 生成的，🐂🍺）
    // 参数：部门id（string）、所有部门信息（array）
    public static function getSubdepartments($departmentId, $departments) {
        $output = array();
        foreach ($departments as $department) {
            if ($department['parent_id'] == $departmentId) {
                $output[] = $department;
                $subdepartments = self::getSubdepartments($department['id'], $departments);
                if (!empty($subdepartments)) {
                    $output = array_merge($output, $subdepartments);
                }
            }
        }
        return $output;
    }

xml转array

 public static function xml2array($contents, $get_attributes=1, $priority = 'tag') 
    {
        if(!$contents) return array(); 
     
        if(!function_exists('xml_parser_create')) {
            //print "'xml_parser_create()' function not found!";
            return array();
        } 
     
        //Get the XML parser of PHP - PHP must have this module for the parser to work
        $parser = xml_parser_create('');
        xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, "UTF-8"); # http://minutillo.com/steve/weblog/2004/6/17/php-xml-and-character-encodings-a-tale-of-sadness-rage-and-data-loss
        xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
        xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
        xml_parse_into_struct($parser, trim($contents), $xml_values);
        xml_parser_free($parser); 
     
        if(!$xml_values) return;//Hmm... 
     
        //Initializations
        $xml_array = array();
        $parents = array();
        $opened_tags = array();
        $arr = array(); 
     
        $current = &$xml_array; //Refference 
     
        //Go through the tags.
        $repeated_tag_index = array();//Multiple tags with same name will be turned into an array
        foreach($xml_values as $data) {
            unset($attributes,$value);//Remove existing values, or there will be trouble 
     
            //This command will extract these variables into the foreach scope
            // tag(string), type(string), level(int), attributes(array).
            extract($data);//We could use the array by itself, but this cooler. 
     
            $result = array();
            $attributes_data = array(); 
     
            if(isset($value)) {
                if($priority == 'tag') $result = $value;
                else $result['value'] = $value; //Put the value in a assoc array if we are in the 'Attribute' mode
            } 
     
            //Set the attributes too.
            if(isset($attributes) and $get_attributes) {
                foreach($attributes as $attr => $val) {
                    if($priority == 'tag') $attributes_data[$attr] = $val;
                    else $result['attr'][$attr] = $val; //Set all the attributes in a array called 'attr'
                }
            } 
     
            //See tag status and do the needed.
            if($type == "open") {//The starting of the tag '<tag>'
                $parent[$level-1] = &$current;
                if(!is_array($current) or (!in_array($tag, array_keys($current)))) { //Insert New tag
                    $current[$tag] = $result;
                    if($attributes_data) $current[$tag. '_attr'] = $attributes_data;
                    $repeated_tag_index[$tag.'_'.$level] = 1; 
     
                    $current = &$current[$tag]; 
     
                } else { //There was another element with the same tag name 
     
                    if(isset($current[$tag][0])) {//If there is a 0th element it is already an array
                        $current[$tag][$repeated_tag_index[$tag.'_'.$level]] = $result;
                        $repeated_tag_index[$tag.'_'.$level]++;
                    } else {//This section will make the value an array if multiple tags with the same name appear together
                        $current[$tag] = array($current[$tag],$result);//This will combine the existing item and the new item together to make an array
                        $repeated_tag_index[$tag.'_'.$level] = 2; 
     
                        if(isset($current[$tag.'_attr'])) { //The attribute of the last(0th) tag must be moved as well
                            $current[$tag]['0_attr'] = $current[$tag.'_attr'];
                            unset($current[$tag.'_attr']);
                        } 
     
                    }
                    $last_item_index = $repeated_tag_index[$tag.'_'.$level]-1;
                    $current = &$current[$tag][$last_item_index];
                } 
     
            } elseif($type == "complete") { //Tags that ends in 1 line '<tag />'
                //See if the key is already taken.
                if(!isset($current[$tag])) { //New Key
                    $current[$tag] = $result;
                    $repeated_tag_index[$tag.'_'.$level] = 1;
                    if($priority == 'tag' and $attributes_data) $current[$tag. '_attr'] = $attributes_data; 
     
                } else { //If taken, put all things inside a list(array)
                    if(isset($current[$tag][0]) and is_array($current[$tag])) {//If it is already an array... 
     
                        // ...push the new element into that array.
                        $current[$tag][$repeated_tag_index[$tag.'_'.$level]] = $result; 
     
                        if($priority == 'tag' and $get_attributes and $attributes_data) {
                            $current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data;
                        }
                        $repeated_tag_index[$tag.'_'.$level]++; 
     
                    } else { //If it is not an array...
                        $current[$tag] = array($current[$tag],$result); //...Make it an array using using the existing value and the new value
                        $repeated_tag_index[$tag.'_'.$level] = 1;
                        if($priority == 'tag' and $get_attributes) {
                            if(isset($current[$tag.'_attr'])) { //The attribute of the last(0th) tag must be moved as well 
     
                                $current[$tag]['0_attr'] = $current[$tag.'_attr'];
                                unset($current[$tag.'_attr']);
                            } 
     
                            if($attributes_data) {
                                $current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data;
                            }
                        }
                        $repeated_tag_index[$tag.'_'.$level]++; //0 and 1 index is already taken
                    }
                } 
     
            } elseif($type == 'close') { //End of tag '</tag>'
                $current = &$parent[$level-1];
            }
        } 
     
        return($xml_array);
    }