获取/设置多维数组数据的函数,如getData('my.multi.array') [英] Function to get/set multidimensional array data like getData('my.multi.array')
问题描述
类foo
{
private $ config = array();
public __construct(){
$ this-> config ['site'] ['title'] ='XXXXX';
$ this-> config ['site'] ['favicon'] ='XXXXX.ico';
$ this-> config ['site'] ['keywords'] = array('page','cute','other');
$ this-> config ['otherthing'] ='value';
/ ** etc ** /
}
公共函数集($ name,$ value)
{
$ tmp = explode('。 ,$名);
/ **我不知道我可以在这里做什么** /
}
public function get($ name)
{
$ tmp =爆炸(,$名 '');
/ **我不知道我可以在这里做什么** /
}
}
$ thing = new foo;
$ this-> set('site.keywords',array('other','keywords')); //这改变了foo-> config中的数据['site'] ['keywords' ]
echo $ this-> get('site.title'); //获取foo-> config中的数据['site'] ['title']
echo $ this-> get('otherthing'); //获取数据在foo->配置中['otherthing']
数组维度可以在dinamically我想在foo-> config中设置/检索数据,方法如下:function(fist.second.third.four.etc)。
编辑:
我可以用explode创建一个函数,我探索了这种可能性,但是如果我使用这样的函数:
函数get($ name)
{
$ tmp = explode('。',$ name);
if(isset($ this-> config [$ tmp [0]] [$ tmp [1]]))
return $ this-> config [$ tmp [0]] [$ TMP [1]];
return'';
$ / code>
当我需要获取三维数组的值($ this- > config [one] [two] [tree])或一个维度($ this-> config [one])函数不能处理结果。
我想获得N维的数组。
我也试过这个解决方案:
函数nameToArray($ name)
{
$ tmp = explode('。',$ name);
$ return ='';
foreach($ tmp as $ v)
{
$ return。=['{$ v}'];
}
return'config'。$ return;
}
函数集($ name,$ value)
{
$ this-> {$ this-> nameToArray} = $ value;
}
$ foo-> set('site.favicon','something.ico');
但是这不会编辑$ foo-> config中的数组,这会在$ this内创建一个新值所谓的字面配置['网站'] ['favicon']。
我不知道我能做到这一点,即时通讯尝试了很多方法,但我不能得到预期的结果。
感谢您的帮助。
使用 reference 来引用数组中的最新已知点并在每一步中更新它:
$ ref =& $ this-> config;
$ keys = explode('。',$ name);
foreach($ key为$ idx => $ key){
if(!is_array($ ref)){
//引用不引用数组
/ /这是一个问题,因为如果(!array_key_exists($ key,$ ref)){
// key不存在$ b $,我们仍然有至少一个键去
}
b //反应取决于操作
}
//更新引用
$ ref =& $ ref [$ key];
$ / code>
if
分支取决于操作。下面是getter和setter的例子:
public function get($ name){
$ ref =& $这 - >配置;
$ keys = explode('。',$ name);
foreach($ keys as $ idx => $ key){
if(!is_array($ ref)){
抛出新异常('key''.implode('。') ,array_slice($ keys,0,$ idx-1))。'不是数组'';
if(!array_key_exists($ key,$ ref)){
throw new Exception('key''.implode('。',array_slice($ keys,0,$ idx ))。' 不存在');
}
$ ref =& $ ref [$ key];
}
return $ ref;
}
公共函数集($ name,$ value){
$ ref =& $ this-> config;
$ keys = explode('。',$ name);
foreach($ keys as $ idx => $ key){
if(!is_array($ ref)){
抛出新异常('key''.implode('。') ,array_slice($ keys,0,$ idx))。'不是数组,而是'.gettype($ ref));
if(!array_key_exists($ key,$ ref)){
$ ref [$ key] = array();
}
$ ref =& $ ref [$ key];
}
$ ref = $ value;
}
im trying to get dinamically a data inside a class like this:
Class foo
{
private $config=array();
public __construct(){
$this->config['site']['title'] = 'XXXXX';
$this->config['site']['favicon'] = 'XXXXX.ico';
$this->config['site']['keywords'] = array('page','cute','other');
$this->config['otherthing'] = 'value';
/**etc**/
}
public function set($name,$value)
{
$tmp = explode('.',$name);
/** i dont know what i can do here **/
}
public function get($name)
{
$tmp = explode('.',$name);
/** i dont know what i can do here **/
}
}
$thing = new foo;
$this->set('site.keywords',array('other','keywords'));//this change a data inside foo->config['site']['keywords']
echo $this->get('site.title'); // gets data inside foo->config['site']['title']
echo $this->get('otherthing'); // gets data inside foo->config['otherthing']
Array dimensions can be change dinamically and i want set/retrieve data in foo->config calling the array by the way : function(fist.second.third.four.etc).
Edit:
I can create a function with explode, i explored that posibility, but if i use a function like this:
function get($name)
{
$tmp = explode('.',$name);
if(isset($this->config[$tmp[0]][$tmp[1]]))
return $this->config[$tmp[0]][$tmp[1]];
return '';
}
When i need to take a value of array in 3 dimensions($this->config[one][two][tree]) or one dimension ($this->config[one]) the function cant handle the result. I want to get N dimensions of array.
I tried too this solution: function nameToArray($name) { $tmp = explode('.',$name); $return = '';
foreach($tmp as $v)
{
$return .= "['{$v}']";
}
return 'config'.$return;
}
function set($name,$value)
{
$this->{$this->nameToArray} = $value;
}
$foo->set('site.favicon','something.ico');
But this doesnt edit a array inside $foo->config, this creates a new value inside $this called literally config['site']['favicon'].
I dont know how i can do it, im tried many ways but i cant got the spected result. Thanks for help.
Use a reference to refer to the latest known point in the array and update it with each step:
$ref = &$this->config;
$keys = explode('.', $name);
foreach ($keys as $idx => $key) {
if (!is_array($ref)) {
// reference does not refer to an array
// this is a problem as we still have at least one key to go
}
if (!array_key_exists($key, $ref)) {
// key does not exist
// reaction depends on the operation
}
// update reference
$ref = &$ref[$key];
}
The if
branches depend on the operation. Here’s an example for the getter and setter:
public function get($name) {
$ref = &$this->config;
$keys = explode('.', $name);
foreach ($keys as $idx => $key) {
if (!is_array($ref)) {
throw new Exception('key "'.implode('.', array_slice($keys, 0, $idx-1)).'" is not an array');
}
if (!array_key_exists($key, $ref)) {
throw new Exception('key "'.implode('.', array_slice($keys, 0, $idx)).'" does not exist');
}
$ref = &$ref[$key];
}
return $ref;
}
public function set($name, $value) {
$ref = &$this->config;
$keys = explode('.', $name);
foreach ($keys as $idx => $key) {
if (!is_array($ref)) {
throw new Exception('key "'.implode('.', array_slice($keys, 0, $idx)).'" is not an array but '.gettype($ref));
}
if (!array_key_exists($key, $ref)) {
$ref[$key] = array();
}
$ref = &$ref[$key];
}
$ref = $value;
}
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