(PECL ds >= 1.0.0)
Ds\Collection::isEmpty — Returns whether the collection is empty
abstract public Ds\Collection::isEmpty ( ) : bool
Returns whether the collection is empty.
This function has no parameters.
Returns true if the collection is empty, false otherwise.
Example #1 Ds\Collection::isEmpty() example
<?php $a = new \Ds\Vector([1, 2, 3]); $b = new \Ds\Vector(); var_dump($a->isEmpty()); var_dump($b->isEmpty()); ?>
The above example will output something similar to:
bool(false) bool(true)
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https://www.php.net/manual/en/ds-collection.isempty.php