class_uses
To clarify, this method does not work exactly like array_walk(), since the current key/value of the iterator is not passed to the callback function.
This php method is equivalent to:
<?php
function iterator_apply(Traversable $iterator, $function, array $args)
{
$count = 0;
foreach ($iterator as $ignored)
{
call_user_func_array($function, $args);
$count++;
}
return $count;
}
?>
iterator_apply
(PHP 5 >= 5.1.0)
iterator_apply — Call a function for every element in an iterator
Description
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
TRUEin order to continue iterating over theiterator. -
args -
Arguments to pass to the callback function.
Return Values
Returns the iteration count.
Examples
Example #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));
?>
The above example will output:
APPLES BANANAS CHERRIES
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User Contributed Notes
iterator_apply - [1 notes]
kminkler at synacor dot com ¶
3 years ago