How to access numeric property of an object

Question

I have this object:

 stdClass Object ( 
    [0] => stdClass Object ( 
         [type] => A 
         [quantity] => 30 
    )
    [1] => stdClass Object ( 
         [type] => P 
         [quantity] => 129
    ) 
 )

However, I cannot access the sub-objects (e.g., $Data->0->quantity) because numeric properties of objects are not accessible in PHP.

How can I access the sub-objects without resorting to looping?

score 1 · Answer 1 · answered May 18 '11 at 10:48

1

Just as any object with public variables:

$oStdClass->0->quantity = 10;

Or loop trough them.

foreach($oStdClasses as $oStdClass) {
     $oStdClass->quantity = 10;
}

answered May 18 '11 at 10:48

Wesley van Opdorp

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no it doesn't work. that's the problem already. I tried your code like this: `echo $this->Data->0->type;` and it gave syntax error. – kuzey beytar May 18 '11 at 10:52
1

I'm not really sure how you got integer members in there, but the foreach loop should work nonetheless. – Wesley van Opdorp May 18 '11 at 11:03

score 1 · Answer 2 · answered May 18 '11 at 11:02

This seems a bit of a strange corner case -- objects generally are not supposed to have properties which aren't valid PHP variable names -- but it should still be possible to get to all of the variables there.

Use get_object_vars.

// The following code doubles all of the "quantity" properties of 
// all of the sub-objects.
foreach( get_object_vars( $strangObject ) as $key => $value )
{
     // in here, $key will be your (numeric) property name of the outer object
     // and $value will be the object stored at that property.

     $value->quantity *= 2;
}

score 0 · Answer 3 · answered Nov 26 '15 at 08:11

0

This is an interesting piece. Use variables to address:

print_r($item->0);

But this works:

$index = 0;
print_r($item->$index);

answered Nov 26 '15 at 08:11

tika

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score 0 · Answer 4 · answered May 18 '11 at 10:48

0

Use a for-each loop for that. (If I understand your question right...)

answered May 18 '11 at 10:48

Tobias

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score 0 · Answer 5 · answered May 18 '11 at 10:49

0

Object's methods and/or properties are accessed via the arrow -> operator. So to access quantity, you'd do:

$quantity = $object->quantity;

answered May 18 '11 at 10:49

Carlos Campderrós

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score 0 · Answer 6 · answered May 18 '11 at 10:49

0

Maybe?

foreach($class as $v) echo($v->quantity);

answered May 18 '11 at 10:49

Danzan

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How to access numeric property of an object

6 Answers6