(PHP 5 >= 5.1.0, PHP 7)
Call a function for every element in an iterator
int iterator_apply ( Traversable $iterator, callable $function [, array $args ] )
Calls a function for every element in an iterator.
Parameters:
iterator
The class to iterate over.
function
The callback function to call on every element.
Note: The function must return
TRUE
in order to continue iterating over theiterator
.
args
Arguments to pass to the callback function.
Returns:
Returns the iteration count.
Examples:
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)); ?>
The above example will output:
APPLES BANANAS CHERRIES
See also:
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