问题
Is this the only way to check if an object is an instance of a class, in my case of the DateTime class?
$cls = ReflectionClass("DateTime");
if (! $cls->isInstance( (object) $var ) ) {
// is not an instance
}
It seems a bit heavy to me.
回答1:
You could try instanceofDocs...
if ($var instanceof DateTime) {
// true
}
See also is_aDocs:
if (is_a($var, 'DateTime')) {
// true
}
回答2:
if ($var instanceof DateTime)
回答3:
You can use get_class function like this:
<?php
$a = new DateTime();
if (get_class($a) == 'DateTime') {
echo "Datetime";
}
回答4:
What about instanceof
来源:https://stackoverflow.com/questions/9568793/php-check-for-instance-of-datetime