How do I add an object to an array in php?

Question

I want to create an array within an object (handler) that holds a series of objects (subject) in PHP. The array is a property of the handler and I have a method to create new subjects.

class MyHandler (
  $TheList = array();
  $TempSubject = object; // class subject

  public function AddNewSubject($information) {
    $TempSubject = new subject($information);
    $This->TheList [] = $TempSubject;
  }
)

If I create a new subject as above, does the information persist object persist within MyHandler or is it lost after AddNewSubject ends? I am new to PHP so please comment on any errors.

ajreal · Accepted Answer · 2011-12-06 18:34:27Z

6

It will persist, but you have a typo $This .. should be $this

answered Dec 6, 2011 at 18:34

ajreal

47.4k11 gold badges97 silver badges119 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Ashlar Over a year ago

Oh Boy! search and replace! :)

Jason Brumwell · Accepted Answer · 2011-12-06 18:38:47Z

1

to answer your question yes the object will persist in the class

class MyHandler (
     public $TheList = array();

     public function AddNewSubject($information) {
          $this->TheList[] = new subject($information);
     }
)

answered Dec 6, 2011 at 18:38

Jason Brumwell

3,55027 silver badges18 bronze badges

Comments

sgcharlie · Accepted Answer · 2011-12-06 18:40:41Z

$TempSubject within the object's method is only a temporary variable. If, however, you were to define your function like this:

public function AddNewSubject($information) {
  $this->TempSubject = new subject($information);
  $this->TheList [] = $this->TempSubject;
}

then the object's property ($this->TempSubject) would be updated each time but a copy of that object would be stored in $this->TheList.

Finally, if you were to define your function like this:

public function AddNewSubject($information) {
  $this->TempSubject = new subject($information);
  $this->TheList [] =& $this->TempSubject;
}

you would find that $this->TheList would contain a list of references to the same object, which would be overridden every time you call the function.

I hope that helps.

user1068455 · Accepted Answer · 2011-12-06 18:34:54Z

0

You should use the array_push method, check it here: http://php.net/manual/en/function.array-push.php

answered Dec 6, 2011 at 18:34

user1068455

1011 gold badge1 silver badge3 bronze badges

3 Comments

xil3 Over a year ago

Why? $array[] = "new value"; does the same thing

Madara's Ghost Over a year ago

@xil3 $array[] is an alias of array_push($array, ??) so yes, it's the same thing. It's really all about author preferences.

xil3 Over a year ago

@Truth I know what it is, but my point is that this answer didn't add any value to this question.

Collectives™ on Stack Overflow

How do I add an object to an array in php?

4 Answers 4

1 Comment

Comments

Comments

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

1 Comment

Comments

Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related