CODEWITHSUNDEEP
phpdatetime
Dallin
Dallin

Reputation: 1074

instanceof Datetime fails when checking a DateTime object

I tried using a check in PHP 5.5 to see if a variable contains an instanceof DateTime. is_object($value) passes but instanceof DateTime fails

if (is_object($value) && $value instanceof DateTime )
{
    $value = $value->format(AppConstant::DATETIME_FORMAT_MYSQL);
}

However, this works just fine. 

if (is_object($value) && is_a($value, "DateTime") )
{
    $value = $value->format(AppConstant::DATETIME_FORMAT_MYSQL);
}

From everything I've read, it seems like I should be able to do the former. Why does instanceof not work in this case?

Upvotes: 1

Views: 961

Answers (1)

jszobody
jszobody

Reputation: 28941

My guess is you're inside a namespace, in which case you need to explicitly specify the root namespace for DateTime:

if (is_object($value) && $value instanceof \DateTime )

Or, of course you can specify at the top of your file:

use DateTime;

...

if (is_object($value) && $value instanceof DateTime )

Upvotes: 7

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