Does PHP not allow typecasting an array as object during initialisation of a variable?

Question

I'm using this code to initialize a multi-dimensional array:

protected $availableAuthMechanisms = [
    'open' => (object)[
        'owner'       => 'Mohsin.Auth',
        'name'        => 'Open',
        'identifier'  => 'open'
    ]
];

And I get an error that says "Constant expression contains invalid operations". What is going on here?--how do I achieve this properly?

Chris · Accepted Answer · 2019-10-06 10:06:26Z

3

Unfortunately you cannot cast an array inside an array to an object when defining it.

What you could do is cast the array to an object once you retrieve it.

Example:

protected $availableAuthMechanisms = [
    'open' => [
        'owner'       => 'Mohsin.Auth',
        'name'        => 'Open',
        'identifier'  => 'open'
    ]
];

$obj = (object) $this->availableAuthMechanisms['open'];

answered Oct 6, 2019 at 10:06

Chris

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2 Comments

Saifur Rahman Mohsin Over a year ago

That's a shame. I thought I was messing something up as I saw an example in php.net where this was being used the way I did it in my question. >> php.net/manual/en/language.types.object.php#117149 Thanks for clearing it up.

Chris Over a year ago

@SaifurRahmanMohsin Ah yes, in that example the array is also casted to an object right after assigning it to a variable ;)

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