XO is a library that provides some e(x)tended (o)bjects to build strictly typed arrays such as Map, Set, Tuple or any type of TypedArray's, and also String and Number objects that are not objects natively in PHP.

You can use Map, Set and Tuple to build strict arrays and also use AnyArray (ArrayObject and Collection are just aliases of it) derived from AbstractArray that contains many native-equal array methods or StringObject and NumberObject to use AbstractScalarObject interface.

All XO objects extends AbstractObject, so that makes possible to use some basic object methods like getName() or getShortName().

In a Nutshell

use xo\Collection;
use function xo\set;

// Declare a typed array as Poll
class Poll extends Collection {
    // Define a custom method
    public function getResults(): array {
        // Use copy(), so do not modify Poll instance
        return $this->copy()->map(function ($option) {
            // Use set() shortcut and sum avarage of option values
            return set($option)->sumAvg(2);
        })->sort('asort', function ($a, $b) {
            // Use reverse sort preserving keys
            return $a < $b;
        })->toArray();
    }
}

// Create an instance of Poll
$poll = new Poll([
    // Fill with options
    'option_1' => [2, 2, 1],
    'option_2' => [5, 1, 5],
    'option_3' => [3, 5, 2]
]);

var_export($poll->getResults()); //=> ['option_2' => 3.67, 'option_3' => 3.33, 'option_1' => 1.67]

Installation

composer require k-gun/xo

Use can also download and use without Composer including boot.php.

include 'path_to_xo/boot.php';

Using Array Objects

Basically there are 5 types of array in XO;

TypedArray: Int or String keyed object derived from AbstractArray.

$array = new xo\TypedArray('IntArray', [1, 2, 3], 'int');
$array->sum(); //=> 6

$array->append(4);
$array->sum(); //=> 10

// this will throw a xo\exception\MethodException
// 'cos append() does not take string value
$array->append('4');

AnyArray: String keyed object derived from TypedArray.

$map = new xo\AnyArray(['a' => 1, 'b' => 2]);
$map->sum(); //=> 3

// add new item
$map->append(3);
$map->sum(); //=> 6

Map: String keyed object derived from TypedArray.

$map = new xo\Map(['a' => 1, 'b' => 2]);
$map->sum(); //=> 3

// this will throw a xo\exception\MethodException
// 'cos append() does not take a key but only value
$map->append(3);

// add new item with key,value pairs using set(), or push() as well
$map->set('c', 3);
$map->sum(); //=> 6

Set: Int keyed object derived from TypedArray.

$map = new xo\Set(1, 2);
$map->sum(); //=> 3

// add new item without key
$map->append(3);

// or with key,value pairs using set(), or push() as well
$map->set(2, 3);
$map->sum(); //=> 6

Tuple: Int keyed and read-only object derived from TypedArray.

$map = new xo\Tuple(1, 2);
$map->sum(); //=> 3

// this will throw a xo\exception\MethodException
// 'cos append() is not allowed for Tuple objects
$map->append(3);

But, off course, you can create new typed array objects via TypedArray directly like in first example or defining new arrays that extend TypedArray or other objects such as Map, Set, Tuple or AnyArray.

Typed array example;

class IntArray extends xo\TypedArray {
    public function __construct(array $items = null) {
        parent::__construct('IntArray', $items, 'int');
    }
}

$array = new IntArray();
$array->append(1);
$array->append(2);
$array->append('3'); //=> error

Yet another example;

class Poll extends xo\TypedArray {
    public function __construct(array $items = null) {
        parent::__construct('Poll', $items, 'array');
    }

    public function getResults(): array {
        return $this->copy()->map(function ($option) {
            return round(array_sum($option) / count($option), 2);
            // or
            // return xo\set($option)->sumAvg(2);
            // return (new xo\Set($option))->sumAvg(2);
        })->sort('asort', function ($a, $b) {
            return $a < $b;
        })->toArray();
    }
}

$poll = new Poll();
$poll->put('option_1', [2, 2, 1]);
$poll->put('option_2', [5, 1, 5]);
$poll->put('option_3', [3, 5, 2]);

var_export($poll->getResults()); //=> ['option_2' => 3.67, 'option_3' => 3.33, 'option_1' => 1.67]

If you want to make a untyped array, you can simply use AnyArray. So that will provide all methods as well likely on the other arrays.

Here is another example with AnyArray like above;

class Poll extends xo\AnyArray {
    public function getResults(): array {
        return $this->copy()->map(function ($option) {
            return round(array_sum($option) / count($option), 2);
        })->sort('asort', function ($a, $b) {
            return $a < $b;
        })->toArray();
    }
}

Custom Arrays

Creating custom arrays;

class User {
    private $id;
    public function __construct(int $id = null) {
        $this->id = $id;
    }
}

class Users extends xo\TypedArray {
    public function __construct(array $items = null) {
        parent::__construct('Users', $items, User::class);
    }
}

$users = new Users();
$users->add(new User(1));
$users->add(new User(2));
$users->add(new User(null));

var_dump($users->copy()->filter(function (User $user) {
    return !is_null($user->id);
})->count()); //=> int(2)

// this will throw a xo\exception\ValueException
// 'cos Users accepts User type values only
$users->add('boom!');

Besides, it also possible with Set or Map;

class Users extends xo\Set {
    public function __construct(array $items = null) {
        parent::__construct($items, User::class);
    }
}

$users = new Users();
$users->add(new User(1));
$users->add(new User(2));
$users->add(new User(null));
...

// or

class Users extends xo\Map {
    public function __construct(array $items = null) {
        parent::__construct($items, User::class);
    }
}

$users = new Users();
$users->put(1, new User(1));
$users->put(2, new User(2));
$users->put('null', new User(null));
...

Using String and Number Objects

$string = new xo\StringObject('Hello, world!');
var_dump($string->test('~hell~')); //=> bool(false)
var_dump($string->test('~hell~i')); //=> bool(true)
var_dump($string->startsWith('He')); //=> bool(true)

$number = new xo\NumberObject(1.555);
var_dump($number->toInt()); //=> int(1)
var_dump($number->toFloat()); //=> float(1.555)
var_dump($number->toFloat(2)); //=> float(1.56)

Objects, Object Methods and Properties

`AbstractObject`

abstract class xo\AbstractObject {}

public final getClass(): object
public final getName(): string
public final getShortName(): string
public final clone(): object
public final equals(object $object): bool
    throws xo\exception\MethodException
public toValue(): ?any
public toString(): string

`AbstractArray`

abstract class xo\AbstractArray extends xo\AbstractObject
    implements xo\ArrayInterface, Countable, IteratorAggregate {}

use xo\ArrayTrait

private bool $readOnly
private bool $allowNulls
private xo\ArrayObject $items
private string $itemsType
private static array $methods

protected static array $notAllowedMethods

public __construct(array $items = null, string $itemsType = null,
    bool $readOnly = false, bool $allowNulls = false)

public final __call(string $method, array $methodArgs): any
    throws xo\exception\MethodException

public final prototype(string $method, callable $methodFunc): void
    throws xo\exception\MethodException
public final readOnly(): bool
public final allowNulls(): bool
public final item($key): ?any
public final items(bool $pair = false): array
public final itemsType(): string
public final reset(array $items): self
    throws xo\exception\MutationException
public final resetItems(array $items): self
    throws xo\exception\MutationException
public final copy(): xo\ArrayInterface
public final copyArray(): array
public final size(): int
public final empty(): void
public final isEmpty(): bool
public final count(): int
public final countValues(): array
public final keys(): array
public final values(): array
public final first(): ?any
public final firstKey(): int|string|null
public final last(): ?any
public final lastKey(): int|string|null
public final toArray(bool $normalize = false): array
public final toObject(): object
public final toJson(): string
public final map(callable $func): self
    throws xo\exception\MutationException
public final reduce($initialValue = null, callable $func = null): any
public final filter(callable $func = null): self
    throws xo\exception\MutationException
public final diff(iterable $items, bool $uniq = false): array
public final uniq(): array
public final ununiq(): array
public final uniqs(): array
public final merge(self $array): self
    throws xo\exception\MutationException,ArgumentException
public final chunk(int $size, bool $preserveKeys = false): array
public final slice(int $offset, int $size = null, bool $preserveKeys = false): array
public final reverse(): self
public final rand(int $size = 1, bool $useKeys = false)
public final shuffle(bool $preserveKeys = null): self
    throws xo\exception\MutationException
public final sort(callable $func = null, callable $ufunc = null, int $flags = 0): self
    throws xo\exception\MutationException
public final sortNatural(bool $caseSensitive = true, int $flags = 0): self
    throws xo\exception\MutationException
public final sortLocale(string $locale, callable $func = null, callable $ufunc = null, int $flags = 0): self
    throws xo\exception\MutationException
public final test(Closure $func): bool
public final testAll(Closure $func): bool
public final find(Closure $func): ?any
public final findKey(Closure $func): int|string|null
public final findIndex(Closure $func): ?int
public final keyCheck(int|string $key): void
    throws xo\exception\KeyException
public final valueCheck(any $value): void
    throws xo\exception\ValueException
public final keyValueCheck(int|string $key, any $value): void
    throws xo\exception\KeyException,ValueException
public final nullCheck(any $value): void
    throws xo\exception\NullException
public final methodCheck(string $method): void
    throws xo\exception\MethodException
public final readOnlyCheck(): void
    throws xo\exception\MutationException
public final generate(bool $reverse = false): Generator
public final getIterator(): Generator
public final min(bool $numericsOnly = false): ?any
public final max(bool $numericsOnly = false): ?any
public final calc(string $operator, int $round = null, int &$valueCount = null): ?number
    throws xo\ArrayException
public final calcAvg(string $operator, int $round = null, int &$valueCount = null): ?float
    throws xo\ArrayException
public final sum(int $round = null, int &$valueCount = null): ?number
public final sumAvg(int $round = null, int &$valueCount = null): ?float

private final executeCommand(string $command, &...$arguments): void
    throws xo\exception\MutationException,NullException
    throws xo\ArrayException

`TypedArray`

class xo\TypedArray extends xo\AbstractArray {}

protected string $type;

public __construct(string $type, array $items = null, string $itemsType = null,
    bool $readOnly = false, bool $allowNulls = false)
    throws xo\exception\TypeException

public final type(): string

`AnyArray`

class xo\AnyArray extends xo\TypedArray {}

protected static array $notAllowedMethods = []

public __construct(array $items = null, bool $readOnly = false)

public search(any $value): int|string|null
public searchLast(any $value): int|string|null
public indexOf(any $value): ?int
public lastIndexOf(any $value): ?int
public has(any $value): bool
public hasKey(int|string $key): bool
public set(int|string $key, any $value, int &$size = null): self
public get(int|string $key, any $valueDefault = null, bool &$found = null): ?any
public add(any $value): self
public remove(any $value, bool &$found = null): self
public removeAt(int|string $key, bool &$found = null): self
public removeAll(array $values, int &$count = null): self
public append(any $value, int &$size = null): self
public prepend(any $value, int &$size = null): self
public pop(int &$size = null): ?any
public unpop(any $value, int &$size = null): self
public shift(int &$size = null): ?any
public unshift(any $value, int &$size = null): self
public put(int|string $key, any $value): self
public push(int|string $key, any $value): self
public pull(int|string $key, any $valueDefault = null, bool &$found = null): ?any
public replace(any $value, any $replaceValue, bool &$found = null): self
public replaceAt(int|string $key, any $replaceValue, bool &$found = null): self
public flip(): self
    throws xo\ArrayException
public pad(int $times, any $value, int $offset = null): self

`Map`

class xo\Map extends xo\TypedArray {}

protected static array $notAllowedMethods = ['flip', 'add', 'append', 'prepend', 'unpop',
    'unshift', 'flip', 'pad']

public __construct(array $items = null, string $itemsType = null,
    bool $readOnly = false, bool $allowNulls = false)

public search(any $value): int|string|null
public searchLast(any $value): int|string|null
public indexOf(any $value): ?int
public lastIndexOf(any $value): ?int
public has(any $value): bool
public hasKey(string $key): bool
public set(string $key, any $value, int &$size = null): self
public get(string $key, any $valueDefault = null, bool &$found = null): ?any
public remove(any $value, bool &$found = null): self
public removeAt(string $key, bool &$found = null): self
public removeAll(array $values, int &$count = null): self
public pop(int &$size = null): ?any
public shift(int &$size = null): ?any
public put(string $key, any $value): self
public push(string $key, any $value): self
public pull(string $key, any $valueDefault = null, bool &$found = null): ?any
public replace(any $value, any $replaceValue, bool &$found = null): self
public replaceAt(string $key, any $replaceValue, bool &$found = null): self

`Set`

class xo\Set extends xo\TypedArray {}

protected static array $notAllowedMethods = ['flip']

public __construct(array $items = null, string $itemsType = null,
    bool $readOnly = false, bool $allowNulls = false)

public search(any $value): int|string|null
public searchLast(any $value): int|string|null
public indexOf(any $value): ?int
public lastIndexOf(any $value): ?int
public has(any $value): bool
public hasKey(int $key): bool
public set(int $key, any $value, int &$size = null): self
public get(int $key, any $valueDefault = null, bool &$found = null): ?any
public add(any $value): self
public remove(any $value, bool &$found = null): self
public removeAt(int $key, bool &$found = null): self
public removeAll(array $values, int &$count = null): self
public append(any $value, int &$size = null): self
public prepend(any $value, int &$size = null): self
public pop(int &$size = null): ?any
public unpop(any $value, int &$size = null): self
public shift(int &$size = null): ?any
public unshift(any $value, int &$size = null): self
public put(int $key, any $value): self
public push(int $key, any $value): self
public pull(int $key, any $valueDefault = null, bool &$found = null): ?any
public replace(any $value, any $replaceValue, bool &$found = null): self
public replaceAt(int $key, any $replaceValue, bool &$found = null): self
public pad(int $times, any $value, int $offset = null): self

`Tuple`

class xo\Tuple extends xo\TypedArray {}

protected static array $notAllowedMethods = ['reset', 'resetItems', 'empty', 'map', 'filter', 'merge',
    'reverse', 'shuffle', 'search', 'searchLast', 'set', 'add', 'remove', 'removeAt', 'removeAll',
    'append', 'prepend', 'pop', 'unpop', 'shift', 'unshift', 'put', 'push', 'pull', 'replace', 'replaceAt',
    'flip', 'pad']

public __construct(array $items = null, string $itemsType = null, bool $allowNulls = false)

public indexOf(any $value): ?int
public lastIndexOf(any $value): ?int
public has(any $value): bool
public hasKey(int $key): bool
public get(int $key, any $valueDefault = null, bool &$found = null): ?any

`ArrayObject` and `Collection`

// these are just aliased classes
class xo\ArrayObject extends xo\AnyArray {}
class xo\Collection extends xo\AnyArray {}

`AbstractScalarObject`

abstract class xo\AbstractScalarObject extends xo\AbstractObject {}

protected scalar $value;
protected string $valueType;

public __construct(scalar $value)
    throws xo\exception\ArgumentTypeException

public final value(): scalar
public final valueType(): string
public final equalsTo(scalar $value): bool
public final size(bool $multiByte = false): int
public toString(): string

`StringObject`

class xo\StringObject extends xo\AbstractScalarObject {}

public string const TRIM_CHARS = " \t\n\r\0\x0B"

public __construct(string $value)
    throws xo\exception\ArgumentTypeException

public final test(string $pattern): ?bool
public final match(string $pattern, int $flags = 0): ?array
public final matchAll(string $pattern, int $flags = 0): ?array
public final indexOf(string $search, bool $caseSensitive = true): ?int
public final lastIndexOf(string $search, bool $caseSensitive = true): ?int

public final trim(string $chars = null, int $side = 0): string
public final trimLeft(string $chars = null): string
public final trimRight(string $chars = null): string
public final trimSearch(string $search, bool $caseSensitive = true, int $side = 0): string
public final trimSearches(array[string] $searches, bool $caseSensitive = true, int $side = 0): string

public final compare(string $value): int
public final compareLocale(string $locale, string $value): int
public final contains(string $search, bool $caseSensitive = true): bool
public final containsAny(array[string] $searches, bool $caseSensitive = true): bool
public final containsAll(array[string] $searches, bool $caseSensitive = true): bool
public final startsWith(string $search): bool
public final endsWith(string $search): bool

`NumberObject`

class xo\NumberObject extends xo\AbstractScalarObject {}

public __construct(numeric $value)
    throws xo\exception\ArgumentTypeException

public final toInt(): int
public final toFloat(int $round = null): float

Static and Util Objects

`StaticClass`

static class xo\StaticClass {}

public final __construct()
    throws xo\StaticClassException

`Type`

static final class xo\Type extends xo\StaticClass {}

public const ANY = 'Any'
public const MAP = 'Map'
public const SET = 'Set'
public const TUPLE = 'Tuple'

public static validateItems(object $object, string $type, array $items, string $itemsType = null,
    bool $allowNulls, string &$error = null): bool
public static get(any $input, bool $objectCheck = false): string
public static export(any $input): string
public static makeArray(any $input): array
public static makeObject(any $input): object
public static isBasic(string $type): bool
public static isDigit(any $input, bool $negatives = false): bool
public static isTuple(any $input): bool
public static isMapLike(any $input): bool
public static isSetLike(any $input): bool

`Util`

static class xo\util\Util extends xo\StaticClass {}

`ArrayUtil`

static class xo\util\ArrayUtil extends xo\util\Util {}

public static final keyCheck(int|string $key): ?string
    throws xo\util\UtilException
public static final isSequentialArray(array $array): bool
public static final isAssociativeArray(array $array): bool
public static final set(array &$array, int|string $key, any $value): array
    throws xo\util\UtilException
public static final get(array $array, int|string $key, any $valueDefault = null): ?any
    throws xo\util\UtilException
public static final getAll(array $array, array[int|string] $keys, any $valueDefault = null): array
    throws xo\util\UtilException
public static final pull(array &$array, int|string $key, any $valueDefault = null): ?any
    throws xo\util\UtilException
public static final pullAll(array &$array, array[int|string] $keys, any $valueDefault = null): array
    throws xo\util\UtilException
public static final test(array $array, Closure $func): bool
public static final testAll(array $array, Closure $func): bool
public static final rand(array $items, int $size = 1, bool $useKeys = false)
    throws xo\util\UtilException
public static final shuffle(array &$items, bool $preserveKeys = false): array
public static final sort(array &$array, callable $func = null, callable $ufunc = null, int $flags = 0): array
    throws xo\util\UtilException
public static final include(array $array, array $keys): array
public static final exclude(array $array, array $keys): array
public static final first(array $array, any $valueDefault = null): ?any
public static final last(array $array, any $valueDefault = null): ?any
public static final getInt(array $array, int|string $key, int $valueDefault = null): int
public static final getFloat(array $array, int|string $key, float $valueDefault = null): float
public static final getString(array $array, int|string $key, string $valueDefault = null): string
public static final getBool(array $array, int|string $key, bool $valueDefault = null): bool

`NumberUtil`

static class xo\util\NumberUtil extends xo\util\Util {}

public static final compare(number $a, number $b, int $precision = null): ?int
public static final equals(number $a, number $b, int $precision = null): ?bool
public static final isNumber(any $input): bool
public static final isDigit(any $input, bool $negatives = false): bool
public static final isId(any $input): bool
public static final isUInt(any $input): bool
public static final isUFloat(any $input): bool
public static final isSigned(any $input): bool
public static final isUnsigned(any $input): bool

`StringUtil`

static class xo\util\StringUtil extends xo\util\Util {}

public static final compare(string $source1, string $source2): int
public static final compareLocale(string $locale, string $source1, string $source2): int
public static final contains(string $source, string $search, bool $caseSensitive = true): bool
public static final containsAny(string $source, array $searches, bool $caseSensitive = true): bool
public static final containsAll(string $source, array $searches, bool $caseSensitive = true): bool
public static final startsWith(string $source, string $search): bool
public static final endsWith(string $source, string $search): bool
public static final trimSearch(string $source, string $search, bool $caseSensitive = true,
    int $side = 0): string

Exceptions

class xo\exception\Exception extends Exception {}

class xo\ArrayException extends xo\exception\Exception {}
class xo\StaticClassException extends xo\exception\Exception {}

class xo\util\UtilException extends xo\exception\Exception {}

class xo\exception\ArgumentException extends xo\exception\Exception {}
class xo\exception\ArgumentTypeException extends xo\exception\Exception {}
class xo\exception\KeyException extends xo\exception\Exception {}
class xo\exception\ValueException extends xo\exception\Exception {}
class xo\exception\MethodException extends xo\exception\Exception {}
class xo\exception\MutationException extends xo\exception\Exception {}
class xo\exception\NullException extends xo\exception\Exception {}
class xo\exception\TypeException extends xo\exception\Exception {}

Shortcut Functions

map(...$arguments): xo\Map
set(...$arguments): xo\Set
tuple(...$arguments): xo\Tuple
collection(...$arguments): xo\Collection
string(string $value): xo\StringObject
number(numeric $value): xo\NumberObject

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README.md

README.md

In a Nutshell

Installation

Using Array Objects

Custom Arrays

Using String and Number Objects

Objects, Object Methods and Properties

`AbstractObject`

`AbstractArray`

`TypedArray`

`AnyArray`

`Map`

`Set`

`Tuple`

`ArrayObject` and `Collection`

`AbstractScalarObject`

`StringObject`

`NumberObject`

Static and Util Objects

`StaticClass`

`Type`

`Util`

`ArrayUtil`

`NumberUtil`

`StringUtil`

Exceptions

Shortcut Functions

Files

README.md

Latest commit

History

README.md

File metadata and controls

In a Nutshell

Installation

Using Array Objects

Custom Arrays

Using String and Number Objects

Objects, Object Methods and Properties

AbstractObject

AbstractArray

TypedArray

AnyArray

Map

Set

Tuple

ArrayObject and Collection

AbstractScalarObject

StringObject

NumberObject

Static and Util Objects

StaticClass

Type

Util

ArrayUtil

NumberUtil

StringUtil

Exceptions

Shortcut Functions

`AbstractObject`

`AbstractArray`

`TypedArray`

`AnyArray`

`Map`

`Set`

`Tuple`

`ArrayObject` and `Collection`

`AbstractScalarObject`

`StringObject`

`NumberObject`

`StaticClass`

`Type`

`Util`

`ArrayUtil`

`NumberUtil`

`StringUtil`