PHP Classes

How to Use a PHP Collection Class to Preform Useful Types of Operation Learning from the Package TCollection: Examples of processing collections of objects

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Version License PHP version Categories
tcollection 1.0Custom (specified...8.4Data types, PHP 8
Description 

Author

Christos Drogidis

This class provides example scripts of processing collections of objects.

It provides several scripts that call a class to process collections of objects.

Currently it provides example scripts for:

- Process collection elements accessing the collection with array access functions

- Compare two collections to determine which elements are different

- Perform average and sum calculations using collection elements

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Instructions

Please read this document to learn how to use the TCollection class to perform different types of operations with collections of objects.

Example

<?php
/*
dobu {
    file:id(`example-00000096`) {
        ascoos {
            logo {`
                  __ _ ___ ___ ___ ___ ___ ___ ___
                 / _` |/ / / __/ _ \ / _ \ / / / _ \ / /
                | (_| |\ \| (_| (_) | (_) |\ \ | (_) |\ \
                 \__,_|/__/ \___\___/ \___/ /__/ \___/ /__/
            `},
            name {`ASCOOS OS`},
            version {`1.0.0`},
        },
        example {
            class {`TCollection`},
            methods {`TCollection ArrayAccess (offsetExists, offsetGet, offsetSet, offsetUnset)`},
            source {`kernel/core/tcollection/tcollection.array_access.php`},
            category:langs {
                en {`Objects Collection`},
                el {`??????? ????????????`}
            },
            summary:langs {
                en {`Using a collection like an array with offset`},
                el {`????? ???????? ??? array ?? offset`}
            },
            desc:langs {
                en {`Demonstrates array-like access using ArrayAccess interface.`},
                el {` ??????????? ???????? ????? array ???? interface ArrayAccess`}
            },
            author {`Drogidis Christos`},
            sincePHP {`8.4.0`}
        }
    }
}
*/
declare(strict_types=1);

use Ascoos\OS\Kernel\Core\Collections\TCollection;

$startTime = microtime(true);
$startMem = memory_get_usage();

echo "<h1>TCollection ArrayAccess</h1>";

// ????????????????????????????????????????????????
// <EN> Creating collection
// <EL> ?????????? ????????
// ????????????????????????????????????????????????
$collection = new TCollection();

// ????????????????????????????????????????????????
// <EN> offsetSet - adding with offset (like $collection['key'] = value)
// <EL> offsetSet - ???????? ?? offset (??? $collection['key'] = value)
// ????????????????????????????????????????????????
$collection['a'] = new stdClass();
$collection[10] = new stdClass();

// ????????????????????????????????????????????????
// <EN> offsetExists + offsetGet - existence check and retrieval
// <EL> offsetExists + offsetGet - ??????? ??????? ??? ????????
// ????????????????????????????????????????????????
echo "<h2>offsetExists + offsetGet - existence check and retrieval</h2>";
if (isset($collection['a'])) {
    echo "<pre>"."The key 'a' exists\n"."</pre>";
    $itemA = $collection['a'];
}

if (isset($collection[10])) {
    echo "<pre>"."Key 10 exists\n"."</pre>";
}

// ????????????????????????????????????????????????
// <EN> offsetUnset - removal of an element (like unset($collection['key']))
// <EL> offsetUnset - ???????? ????????? (??? unset($collection['key']))
// ????????????????????????????????????????????????
echo "<h2>offsetUnset - removal of an element</h2>";
unset($collection['a']);

if (!isset($collection['a'])) {
    echo "<pre>"."The key 'a' was removed\n"."</pre>";
}

// ????????????????????????????????????????????????
// <EN> Addition without key (push like array)
// <EL> ???????? ????? ?????? (push ??? array)
// ????????????????????????????????????????????????
echo "<h2>Addition without key (push like array)</h2>";
$collection[] = new stdClass(); // offsetSet with null offset -> add()

echo "<pre>"."Total elements after the changes: " . $collection->count() . "\n"."</pre>";

// ????????????????????????????????????????????????
// <EN> Memory cleanup
// <EL> ?????????? ??????
// ????????????????????????????????????????????????
$collection->Free();

echo "Example completed.\n";

// ==================== STATISTICS ====================

print_stats($startTime, $startMem);
?>

Details

ASCOOS OS ? TCollection

A lightweight, object?only Deep Core collection class for the ASCOOS Web Operating System.

Ascoos

Overview

TCollection is a Deep Core class of the ASCOOS OS Kernel. It provides a simple, predictable, non?chainable collection structure that stores only objects (not arrays, not scalars).

It is designed for internal Kernel usage and for developers who need strict, object?based collections with optional type enforcement.

Implements:

  • ArrayAccess
  • Countable
  • IteratorAggregate
  • JsonSerializable

Features

  • ? Stores only objects
  • ? Optional strict type enforcement (`instanceof`)
  • ? Array?like access
  • ? Filtering, mapping, grouping
  • ? diff() & intersect()
  • ? JSON serialization
  • ? Deep Core Kernel class (always loaded)
  • ? Fully documented with DoBu

For array/data manipulation, use TArrayHandler instead.

Namespace

use Ascoos\OS\Kernel\Core\Collections\TCollection;

Basic Example

$users = new TCollection();

$user = new stdClass();
$user->name = 'John';

$users->add($user);

echo $users->count(); // 1

Typed Collections (via TCollector)

use Ascoos\OS\Kernel\Core\Collections\TCollector;

TCollector::register('user', App\Models\User::class);

$users = TCollector::create('user');

$users->add(new User()); // OK

Documentation

Full documentation (methods, parameters, examples, DoBu blocks) is available on the official ASCOOS OS website.

License

AGL (Ascoos General License)

Author

Drogidis Christos Creator of ASCOOS OS https://www.ascoos.com


Screenshots (3)  
  • examples/tcollection.array_access.png
  • examples/tcollection.diff_intersect.png
  • examples/tcollection.sum_avg.png
  Files folder image Files (11)  
File Role Description
Files folder imageexamples (3 files)
Files folder imagekernel (1 file)
Accessible without login Plain text file LICENSE-EL.md Lic. License text
Accessible without login Plain text file LICENSE.md Lic. License text
Accessible without login Plain text file README-EL.md Doc. Documentation
Accessible without login Plain text file README.md Doc. Documentation

  Files folder image Files (11)  /  examples  
File Role Description
  Accessible without login Plain text file tcollection.array_access.php Example Example script
  Accessible without login Plain text file tcollection.diff_intersect.php Example Example script
  Accessible without login Plain text file tcollection.sum_avg.php Example Example script

  Files folder image Files (11)  /  kernel  
File Role Description
  Accessible without login Plain text file coreCollections.php Aux. Configuration script

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