(PHP 5 >= 5.1.0, PHP 7)
iterator_apply — Call a function for every element in an iterator
Calls a function for every element in an iterator.
iteratorThe class to iterate over.
functionThe callback function to call on every element.
Hinweis: The function must return
TRUEin order to continue iterating over theiterator.
argsArguments to pass to the callback function.
Returns the iteration count.
Beispiel #1 iterator_apply() example
<?php
function print_caps(Iterator $iterator) {
echo strtoupper($iterator->current()) . "\n";
return TRUE;
}
$it = new ArrayIterator(array("Apples", "Bananas", "Cherries"));
iterator_apply($it, "print_caps", array($it));
?>
Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
APPLES BANANAS CHERRIES