RecursiveFilterIterator::__construct
RecursiveFilterIterator::__construct
(PHP 5 >= 5.1.0, PHP 7)
RecursiveFilterIterator::__construct — Create a RecursiveFilterIterator from a RecursiveIterator
Description
public RecursiveFilterIterator::__construct ( RecursiveIterator $iterator )
Create a RecursiveFilterIterator from a RecursiveIterator.
Parameters
iterator
The RecursiveIterator to be filtered.
Return Values
No value is returned.
Examples
Example #1 Basic RecursiveFilterIterator() example
<?php
class TestsOnlyFilter extends RecursiveFilterIterator {
public function accept() {
// Accept the current item if we can recurse into it
// or it is a value starting with "test"
return $this->hasChildren() || (strpos($this->current(), "test") !== FALSE
}
}
$array = array("test1", array("taste2", "test3", "test4"), "test5"
$iterator = new RecursiveArrayIterator($array
$filter = new TestsOnlyFilter($iterator
foreach(new RecursiveIteratorIterator($filter) as $key => $value)
{
echo $value . "\n";
}
?>
The above example will output something similar to:
test1
test3
test4
test5
Example #2 RecursiveFilterIterator() example
<?php
class StartsWithFilter extends RecursiveFilterIterator {
protected $word;
public function __construct(RecursiveIterator $rit, $word) {
$this->word = $word;
parent::__construct($rit
}
public function accept() {
return $this->hasChildren() OR strpos($this->current(), $this->word) === 0;
}
public function getChildren() {
return new self($this->getInnerIterator()->getChildren(), $this->word
}
}
$array = array("test1", array("taste2", "test3", "test4"), "test5"
$iterator = new RecursiveArrayIterator($array
$filter = new StartsWithFilter($iterator, "test"
foreach(new RecursiveIteratorIterator($filter) as $key => $value)
{
echo $value . "\n";
}
?>
The above example will output something similar to:
test1
test3
test4
test5
See Also
- RecursiveFilterIterator::getChildren() - Return the inner iterator's children contained in a RecursiveFilterIterator
- RecursiveFilterIterator::hasChildren() - Check whether the inner iterator's current element has children
- FilterIterator::accept() - Check whether the current element of the iterator is acceptable
← RecursiveFilterIterator
RecursiveFilterIterator::getChildren →
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/recursivefilteriterator.construct.php
