Php/docs/splobjectstorage.key
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SplObjectStorage::key
(PHP 5 >= 5.1.0, PHP 7)
SplObjectStorage::key — Returns the index at which the iterator currently is
Description
public SplObjectStorage::key ( ) : int
Returns the index at which the iterator currently is.
Parameters
This function has no parameters.
Return Values
The index corresponding to the position of the iterator.
Examples
Example #1 SplObjectStorage::key() example
<?php$s = new SplObjectStorage();$o1 = new StdClass;$o2 = new StdClass;$s->attach($o1, "d1");$s->attach($o2, "d2");$s->rewind();while($s->valid()) { $index = $s->key(); $object = $s->current(); // similar to current($s) var_dump($index); var_dump($object); $s->next();}?>
The above example will output something similar to:
int(0)
object(stdClass)#2 (0) {
}
int(1)
object(stdClass)#3 (0) {
}
See Also
- SplObjectStorage::rewind() - Rewind the iterator to the first storage element
- SplObjectStorage::current() - Returns the current storage entry
- SplObjectStorage::next() - Move to the next entry
- SplObjectStorage::valid() - Returns if the current iterator entry is valid
