Can't directly access array inside of StdClass object?

Question

I'm having trouble accessing an array inside of an StdObject. The object looks like this in my debugger:

$obj = {stClass}[9]
  1234 = {array} [28]
    0 = "some text"
    1 = false
    2 = true
    3 = ""
  ...

It seems like I should be able to access elements in the array like this:

$tmp = 1234;
echo $Obj->$tmp[0]

But I get Notice: Undefined property: stdClass::$5

However, when I do this:

print_r($Obj->$tmp);

It prints out the array just fine.

Why am I unable to access an element in the array, even though I can print out the array?

Aziz Saleh · Accepted Answer · 2014-09-15 00:54:20Z

2

What PHP version are you one, something like this would work for me:

echo $Obj->{$tmp}[0]

On PHP >= 5.1

Reasoning behind this I think is because $tmp[0] is translated before accessing the object as oppose to translating $tmp, then access the object via $tmp

answered Sep 15, 2014 at 0:54

Aziz Saleh

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2 Comments

Nate Over a year ago

That worked for me. I've never encountered this behavior before and it seems really strange. Is this a bug with PHP?

Aziz Saleh Over a year ago

@Nate I wouldn't say it is a bug with PHP, just the way the syntax works.

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