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Germania KG · FilterIterators

FilterIterators for two-dimensional Traversables.

Installation with Composer

$ composer require germania-kg/filteriterators

Alternatively, add this package directly to your composer.json:

"require": {
    "germania-kg/filteriterators": "^2.0"
}

BlankSplitFilterIterator

Lets all items pass of which the given field, splitted by blank sign into an array, contains a word. The Constructor accepts anything that is Traversable.
The Traversable may contain both arrays or (StdClass) objects.

<?php
use Germania\FilterIterators\BlankSplitFilterIterator;
 
$items = array(
  [ 'foo' => 'bar john doe'],
  [ 'foo' => 'john bar doe'],
  [ 'foo' => 'john doe bar'],
  [ 'foo' => ['john', 'doe', 'bar']],
);  

// Convert above arrays to StdClasses
$objects = array_map(function ($a) { return (object) $a; }, $items);

$filter = new BlankSplitFilterIterator( $items, "foo", "bar" );
echo iterator_count( $filter ); // 4

$filter = new BlankSplitFilterIterator( $objects, "foo", "bar" );
echo iterator_count( $filter ); // 4

WordRegexFilterIterator

Lets all items pass of which the given field matches a word. The Constructor accepts anything that is Traversable.
The Traversable may contain both arrays or (StdClass) objects.

<?php
use Germania\FilterIterators\WordRegexFilterIterator;

$items = array(
  [ 'foo' => 'bar john doe'],
  [ 'foo' => 'john bar doe'],
  [ 'foo' => 'john doe bar'],
  [ 'foo' => 'bar,john,doe'],
  [ 'foo' => 'john,bar,doe'],
  [ 'foo' => 'john,doe,bar'],
  [ 'foo' => 'john,doe,white-bar'],
  [ 'foo' => 'john,doe,bar-black']
);

// Convert above arrays to StdClasses
$objects = array_map(function ($a) { return (object) $a; }, $items);

$filter = new WordRegexFilterIterator( $items, "foo", "bar" );
echo iterator_count( $filter ); // 8

$filter = new WordRegexFilterIterator( $objects, "foo", "bar" );
echo iterator_count( $filter ); // 8

KeyNotFalseFilterIterator

Lets all items pass that are not explicitely excluded with active=false or active=0.
The Constructor accepts anything that is Traversable.
The Traversable may contain both arrays or (StdClass) objects.

<?php
use Germania\FilterIterators\KeyNotFalseFilterIterator;

// Items may be Arrays or StdClass objects
$data = [
  // These are not "inactive"
  [ 'name' => 'John', 'active' => true ],
  [ 'name' => 'George' ],

  // but these are:
  [ 'name' => 'Paul',  'active' => false ],
  [ 'name' => 'Ringo', 'active' => 0 ],
];

$filter = new KeyNotFalseFilterIterator( $data, "active" );
foreach( $filter as $item ):
	// John
	// George
	echo $item['name'];
endforeach;

NotEmptyFieldFilterIterator

Lets all items pass that have a field whose value is not empty.
The Constructor accepts anything that is Traversable.
The Traversable may contain both arrays or (StdClass) objects.

<?php
use Germania\FilterIterators\NotEmptyFieldFilterIterator;

// Items may be Arrays or StdClass objects
$data = [
  // These are not "inactive"
  [ 'name' => 'John', 'active' => true ],
  [ 'name' => 'George' ],

  // but these are:
  [ 'name' => 'Paul',  'active' => false ],
  [ 'name' => 'Ringo', 'active' => 0 ],
];

$filter = new NotEmptyFieldFilterIterator( $data, "active" );
foreach( $filter as $item ):
	// John
	echo $item['name'];
endforeach;

Issues

See issues list.

Development

$ git clone https://github.com/GermaniaKG/FilterIterators.git
$ cd FilterIterators
$ composer install

Unit tests

Either copy phpunit.xml.dist to phpunit.xml and adapt to your needs, or leave as is. Run PhpUnit test or composer scripts like this:

$ composer test
# or
$ vendor/bin/phpunit