I don't know how to work with such object, i need to get first and second one status value, tryed to convert it to json, but it gives me nothing. I just don't get it how to open array with such "_data:MailWizzApi_Params:private" name.
Source:
// SEARCH BY EMAIL
$response = $endpoint->emailSearch($myConfig["LIST-UNIQUE-ID"], $_GET["email"]);
// DISPLAY RESPONSE
echo '<hr /><pre>';
print_r($response->body);
echo '</pre>';
I receive such answer
MailWizzApi_Params Object
(
[_data:MailWizzApi_Params:private] => Array
(
[status] => success
[data] => Array
(
[subscriber_uid] => an837jdexga45
[status] => unsubscribed
)
)
[_readOnly:MailWizzApi_Params:private] =>
)
In this case, you can't.
Because it's private field.
For public fields with "incorrect" names you can use snippet:
$name = '}|{';
$obj->$name;
So, let see to your property: [_data:MailWizzApi_Params:private].
It is private field of instance of MailWizzApi_Params class with _data name.
Let's google to it's implementation: Found
As you can see it has toArray public method. Just use it.
print_r($response->body->toArray());
It has ArrayAccess implemented also. So, $response->body['status'] or $response->body['data'] will works.
Thank you guys for fast answers, here is my dumb way if reading status value
(thanks, #Jose Manuel Abarca Rodríguez)
$toJson = json_encode((array)$response->body);
$toJson = str_replace(array("\u0000MailWizzApi_Params\u0000_"), "", $toJson);
So we receive a normal json:
{"data":{"status":"success","data":{"subscriber_uid":"an837jdexga45","status":"unsubscribed"}},"readOnly":false}
And now we need just to decode it
$json = json_decode($toJson, true);
echo $json['data']['status'];
I have an array in yii2, and ocassionally it's only 1 single object that is not empty (all other element of array is empty) and I don't know which one is it. How can I either find the one that is not empty, or (my idea what I was trying), to create a new array, with array_filter (but I'm not sure if it works also with array of objects), to have only the one object in it.
if (count($ttepk) == 1) {
$ttep_filtered[] = array_filter($ttepk);
$id = $ttep_filtered[0]->id;
}
But it was also not working. I get the error message: PHP Notice – yii\base\ErrorException Trying to get property of non-object.
Before array_filter it looks like this:
Array
(
[3] => app\models\Model Object
(
after array_filter:
Array
(
[0] => Array
(
[3] => app\models\Model Object
(
So it seems, array_filter is not the one I need, or I use it the wrong way.
Can you please help me? Thank you!
You can try something like this
$filtered = array_filter($ttepk, function($item) {
return $item instanceof app\models\Model;
});
if (count($filtered) == 1) {
$id = reset($filtered)->id;
}
Using json_decode, I've ended up with an object that looks like this:
$data->foo->bar->1234567->id
I want to access id. There are two problems, both with the number 1234567:
It's an illegal property name.
The number will differ each time, and I can't predict what the number will be. I need a way of accessing id, even when I don't know the number.
I know I can overcome problem (1) with curly braces, but I don't know how to overcome (2). I don't want to use get_object_vars, because the object is likely to be very large, and that function is very slow.
My current solution is simply
foreach ($data->foo->bar as $id); but that feels rather hacky. Is there a better way?
From my comment above, using json_decode(,true) and then resetting.
The example json array looks like:
Array (
[foo] => Array (
[bar] => Array (
[1234567] => Array (
[id] => 1234
)
)
)
)
The code:
<?php
$data = json_decode('{"foo":{"bar":{"1234567":{"id":1234}}}}', true);
reset($data['foo']['bar']);
$number = key($data['foo']['bar']);
echo $data['foo']['bar'][$number]['id'];
Output: 1234
In case you don't need the whole array anymore and only want to get the id you can get it like this:
<?php
$data = json_decode('{"foo":{"bar":{"1234567":{"id":1234}}}}', true);
echo array_shift($data['foo']['bar'])['id'];
Only works if the unknown key is the first element of bar. array_shift removes the element from $data.
Just today I noticed a strange behavior in an object model that was previously working just fine (I have checked everything possible and nothing about its configuration has changed, so I am suspecting a change to PHP version and wondering if anyone else has experience anything similar)
Until recently, I could set the keys of object properties that were arrays manually. The specific implememation of this in one of my models was contained in a gallery class that looked like this:
public function __construct($gid){
parent::__construct($gid);
$this->Photos = $this->getPhotos();
$this->AlbumCover = $this->getCover();
}
public function getPhotos(){
$sql = 'SELECT GalleryPhotoID FROM GalleryPhoto WHERE GalleryID = ?';
$params = array($this->GalleryID);
$allids = DatabaseHandler::GetAll($sql, $params);
$output = array();
foreach($allids as $id){
$gp = new GalleryPhoto($id['GalleryPhotoID']);
$output[$gp->GalleryPhotoID] = $gp;
}
return $output;
}
Irrelevant parts omitted.
Basically, I could set the array keys of the Gallery's Photos object to the individual photo's id in the database. This just made it easier to code for individual iteration and made the whole thing run smoother.
Now, no matter what I set that key to, automatic integers are generated when the foreach runs. I even tried typing a literal string in there, which theoretically should replace every iteration, but I still got incremented, automatic integers for the keys of the property Photos.
[Photos] => Array
(
[0] => GalleryPhoto Object
(
[GalleryID] => 9
[Caption] =>
[Orientation] => 0
[AlbumCover] =>
[DateAdded] => 2011-01-03 16:58:51
[GalleryPhotoID] => 63
[Thumbnail] =>
[Image] =>
[src] => http://..com/galleryImage/getImage/63
)
[1] => GalleryPhoto Object
(
[GalleryID] => 9
[Caption] =>
[Orientation] => 0
[AlbumCover] =>
[DateAdded] => 2011-01-03 16:58:51
[GalleryPhotoID] => 64
[Thumbnail] =>
[Image] =>
[src] => http://..com/galleryImage/getImage/64
)
)
Has the abillity to manually set keys within an object property that is an array been removed in some minor release and I am unaware of it? I have googled all over, looked through the PHP manual site and found no answer. Has anyone experienced anything similar? Is there a better approach I should consider? I only really went with this because it made it so much easier to implement a next/previous system via ajax requests back to the next logical id (keeping in mind that ids can be deleted between!)
Thanks!
I don't see anything wrong with what you have, and I've never experienced the behavior you describe. However, a quick solution could be to replace the assignment line with something like this:
$output[$id['GalleryPhotoID']] = $gp;
You could also echo $gp->GalleryPhotoID; to ensure that the GalleryPhotoID property can actually be accessed that way.
Lastly, you said you replaced the above line with something akin to:
$output['foobar'] = $gp;
and it still created a new entry, with integer keys, for each entry? If that's the case, then I think there may be something in the code you omitted that's causing the problem.
Facepalm all the way. The effluvium of New Year's must still be in my brain, else I would have noticed that the function I added to fetch the album cover thumbnail shuffled the array if there wasn't a photo with the AlbumCover property set!
private function getCover(){
foreach($this->Photos as $ind=>$p){
if($p->AlbumCover){
return $this->Photos[$ind];
}
}
shuffle($this->Photos); //this is the problem
return current($this->Photos);
}
I amended this to just make a local copy of the variable and shuffle that instead if no cover is set.
private function getCover(){
foreach($this->Photos as $ind=>$p){
if($p->AlbumCover){
return $this->Photos[$ind];
}
}
$Photos = $this->Photos;
shuffle($Photos);
return current($Photos);
}
I accepted and upvoted both the answer and the comment posted since your caveats lead me to my error. Thanks guys!
Here's what I want to do:
$clsName = substr(md5(rand()),0,10); //generate a random name
$cls = new $clsName(); //create a new instance
function __autoload($class_name)
{
//define that instance dynamically
}
Obviously this isn't what I'm actually doing, but basically I have unknown names for a class and based on the name, I want to generate the class with certain properties etc.
I've tried using eval() but it is giving me fits over private and $this-> references...
//edit
Ok, obviously my short and sweet "here's what I want to do" caused massive strife and consternation amongst those who may be able to provide answers. In the hope of getting an actual answer I'll be more detailed.
I have a validation framework using code hints on the site I maintain. Each function has two definitions
function DoSomething($param, $param2){
//code
}
function DoSomething_Validate(vInteger $param, vFloat $param2){
//return what to do if validation fails
}
I'm looking to add a validator for primary keys in my database. I don't want to create a separate class for EVERY table (203). So my plan was to do something like
function DoSomething_Validate(vPrimaryKey_Products $id){ }
Where the __autoload would generate a subclass of vPrimaryKey and set the table parameter to Products.
Happy now?
As of PHP 7.0, with a little creativity and knowledge of some lesser known PHP features, you can absolutely do this without resorting to eval or creating script files dynamically. You just need to use anonymous classes and class_alias(), like such:
spl_autoload_register(function ($unfoundClassName) {
{
$newClass = new class{}; //create an anonymous class
$newClassName = get_class($newClass); //get the name PHP assigns the anonymous class
class_alias($newClassName, $unfoundClassName); //alias the anonymous class with your class name
}
This works because anonymous classes are still assigned a name behind the scenes and put in the global scope, so you're free to grab that class name and alias it. Check out the second comment under the anonymous classes link above for more information.
Having said that, I feel like all the people in this question who are saying "Eval is always a very bad idea. Just don't use it ever!" are just repeating what they've heard from the hive mind and not thinking for themselves. Eval is in the language for a reason, and there are situations where it can be used effectively. If you're on an older version of PHP, eval might be a good solution here.
However, they are correct in that it can open up very large security holes and you have to be careful how you use it and understand how to eliminate the risks. The important thing is, much like SQL injection, you have to sanitize any input you put in the eval statement.
For example, if your autoloader looked like this:
spl_autoload_register(function ($unfoundClassName) {
{
eval("class $unfoundClassName {}");
}
A hacker could do something like this:
$injectionCode = "bogusClass1{} /*insert malicious code to run on the server here */ bogusClass2";
new $injectionCode();
See how this has the potential to be a security hole? Anything the hacker puts between the two bogusClass names will be run on your server by the eval statement.
If you adjust your autoloader to check the class name passed in (i.e. doing a preg_match to make sure there's no spaces or special characters, checking it against a list of acceptable names, etc.), you can eliminate these risks and then eval might be totally fine to use in this situation. If you're on PHP 7 or higher though, I recommend the anonymous class alias method above.
its funny, actually this is one of the few things where eval doesnt seem such a bad idea.
as long as you can ensure that no user input will ever enter the eval.
you still have downsides like when your using a bytecode cache that code wont be cached etc etc. but the security issues of eval are pretty much related to having user inputy in the eval, or to ending up in the wrong scope.
if you know what you are doing, eval will help you with this.
That said, in my opinion you are much better off when you no rely on type-hinting for your validation, but you have one function
DoSomething_Validate($id)
{
// get_class($id) and other validation foo here
}
I know this is an old question and there are answers that WILL work, but I wanted to offer a few snippets that would answer the original question and I think offer a more expanded solution should someone end up here like I did when searching for an answer to this problem.
Create Single Dynamic Class
<?php
// Without properties
$myclassname = "anewclassname";
eval("class {$myclassname} { }";
// With a property
$myclassname = "anewclassname";
$myproperty = "newproperty";
eval("class {$myclassname} { protected \${$myproperty}; }";
?>
As long as you properly escape your text, you could also add a function in there.
But what about if you want to dynamically create classes based on something that could itself be dynamic such as creating a class for each table in your database as the original question mentioned?
Create Multiple Dynamic Classes
<?php
// Assumes $dbh is a pdo connection handle to your MySQL database
$stmt=$dbh->prepare("show tables");
$stmt->execute();
$result = $stmt->fetchAll(PDO::FETCH_ASSOC);
$handle = null;
$classcode = '';
foreach ($result as $key => $value) {
foreach ($value as $key => $value) {
$classcode = "class {$value} { ";
$stmt2=$dbh->prepare("DESC $value");
$stmt2->execute();
$result2 = $stmt2->fetchAll(PDO::FETCH_ASSOC);
foreach ($result2 as $key => $value) {
$classcode .= "public \${$value['Field']}; ";
}
$classcode .= "}";
eval($classcode);
}
}
?>
This will dynamically generate a class for each table in a database. For each class, a property that is named after each column will ALSO get created.
Now it's been pointed out you shouldn't do this. As long as you control what's going on in the eval, the risk of security isn't a problem. BUT -- there's most likely a solution that makes more sense if you think deeply enough about it. I thought I had the perfect use case for dynamically creating new classes. Careful examination of the problem proved otherwise.
One potential solution -- use the stdClass for creating objects that are just data containers and don't need any methods.
Also -- as mentioned, you could use a script to manually generate lots of classes. In the case of classes mirroring your database tables, you could use the same logic I have above and instead of doing an eval, write that info to a file.
I think using eval() it's not a reliable solution, especially if your script or software will be distributed to different clients. Shared hosting providers always disable eval() function.
I'm thinking of a better aproach like this :
<?php
function __autoload( $class ) {
require 'classes/'.$class.'.php';
}
$class = 'App';
$code = "<?php class $class {
public function run() {
echo '$class<br>';
}
".'
public function __call($name,$args) {
$args=implode(",",$args);
echo "$name ($args)<br>";
}
}';
file_put_contents('classes/App.php' ,$code);
$a = new $class();
$a->run();
After finishing executing the code, you can delete the file if you want, I tested it and it works perfectly.
Using eval() is really a bad idea. It opens a large security hole. Just don't use it!
function __autoload($class) {
$code = "class $class {`
public function run() {
echo '$class<br>';
}
".'
public function __call($name,$args) {
$args=implode(",",$args);
echo "$name ($args)<br>";
}
}';
eval($code);
}
$app=new Klasse();
$app->run();
$app->HelloWorld();
This might help to create a class at runtime.
It also creates a methor run and a catchall method for unknown methods
But better create Objects at runtime, not classes.
This is almost certainly a bad idea.
I think your time would be better spent creating a script that would create your class definitions for you, and not trying to do it at runtime.
Something with a command-line signature like:
./generate_classes_from_db <host> <database> [tables] [output dir]
Please read everyone else answers on how this is truly a very very bad idea.
Once you understand that, here is a small demo on how you could, but should not, do this.
<?php
$clname = "TestClass";
eval("class $clname{}; \$cls = new $clname();");
var_dump($cls);
I have created a package that dynamically creates classes/interfaces/traits... and stores them into a file
you can then just include the created file to be able to use your class
package : https://packagist.org/packages/kanel/enuma
We can create class instance dynamically by following way
I also face this issue in Laravel 5.8 version and now it is working fine for me.
Give full path instead of the class Name
class TestController extends Controller
{
protected $className;
public function __construct()
{
$this->className = 'User';
}
public function makeDynamicInstance()
{
$classNameWithPath = 'App\\' . $this->className;
$classInstance = new $classNameWithPath;
$data = $classInstance::select('id','email')->get();
return $data;
}
}
Output
Illuminate\Database\Eloquent\Collection Object
(
[items:protected] => Array
(
[0] => App\User Object
(
[fillable:protected] => Array
(
[0] => name
[1] => email
[2] => password
[3] => user_group_id
[4] => username
[5] => facebook_page_id
[6] => first_name
[7] => last_name
[8] => email_verified
[9] => active
[10] => mobile
[11] => user_type
[12] => alternate_password
[13] => salt
[14] => email_verification_token
[15] => parent_id
)
[hidden:protected] => Array
(
[0] => password
[1] => remember_token
)
[casts:protected] => Array
(
[email_verified_at] => datetime
)
[connection:protected] => mysql
[table:protected] => users
[primaryKey:protected] => id
[keyType:protected] => int
[incrementing] => 1
[with:protected] => Array
(
)
[withCount:protected] => Array
(
)
[perPage:protected] => 15
[exists] => 1
[wasRecentlyCreated] =>
[attributes:protected] => Array
(
[id] => 1
[email] => admin#admin.com
)
[original:protected] => Array
(
[id] => 1
[email] => admin#admin.com
)
[changes:protected] => Array
(
)
[dates:protected] => Array
(
)
[dateFormat:protected] =>
[appends:protected] => Array
(
)
[dispatchesEvents:protected] => Array
(
)
[observables:protected] => Array
(
)
[relations:protected] => Array
(
)
[touches:protected] => Array
(
)
[timestamps] => 1
[visible:protected] => Array
(
)
[guarded:protected] => Array
(
[0] => *
)
[rememberTokenName:protected] => remember_token
)
)