Contact Form

Name required

Email address required

Phone number

Message subject required

Message required

Thank you for your interest!

Sorry! Sending a message failed

Errors:

Menu

Home
Installation
Search Engines
Applications

SPHPlayground API

Home Application configuration Error and Exception handling Application Security

Introduction ISO 8601 time Calendar unit enumerations ISO Weeks and months

Apilinkers Cheatcheet Commonmark extensions

Introduction Information parsers

Introduction Validating not empty data Numeric validation String validation Miscellaneous validators Validation containers Validating datetimes

URL related components Cookies and Headers

Database home About rowsets Quering database Insert statement Delete statement Update statement

Data Filtering Localisation - I10n

Queues Stacks Collection

Array manipulation Filesystem manipulation String manipulation

Introduction Attribute management HTML Color manipulation

Image containers Multimedia containers

Meta data in HTML Scripting

Lists Tables Forms

Component factories

Introduction Layout components Navigation Form components Buttons and Button groups More components

Traffic Data Tracker Calendar

SPHPlayground

Calendar

Week Month Year

July 1833

wk

MoMonday

TuTuesday

WeWednesday

ThThursday

FrFriday

SaSaturday

SuSunday

27

1

2

3

4

5

6

7

28

8

9

10

11

12

13

14

29

15

16

17

18

19

20

21

30

22

23

24

25

26

27

28

31

29

30

31

1

2

3

4

External links

JavaScript

Node.js
gulp.js
GRUNT
Webpack
Mocha
Bootstrap
jQuery
Foundation

PHP

PHP Manual
Composer
PHPUnit
Laminas
Symfony
Doctrine

Databases

MySQL
PostgreSQL
SQLite

HTML

HTML5 - W3C
w3schools.com

CSS & SASS

CSS - MDN
CSS-TRICKS
SASS language

Contact information

Photo of Sami Holck

Sami Petteri Holck

Rakuunatie 59 A3, Turku, Finland

+358 44 298 6738

sami.holck@gmail.com

sami@samiholck.fi

GitHub Stack Overflow Facebook X page Instagram Whatsapp

Copyright © 2026 Sami Holck | SPHPlayground Design | |

License

MIT License

Copyright (c) 2026 Sami Holck

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

repository License file

Code of Conduct

The Pledge

In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making participation in this project a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.

Standards

Examples of behavior that contributes to creating a positive environment include:

Using welcoming and inclusive language
Being respectful of differing viewpoints and experiences
Gracefully accepting constructive criticism
Showing empathy towards others

Examples of unacceptable behavior include:

The use of sexualized language or imagery and unwelcome sexual attention or advances
Trolling, insulting/derogatory comments, and personal or political attacks
Public or private harassment
Publishing others' private information without explicit permission
Other conduct which could reasonably be considered inappropriate in a professional setting

Responsibilities

Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.

Project maintainers have the right and responsibility to remove, edit, or reject any contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.

Enforcement

Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project maintainer at sami.holck@gmail.com.

Scope

This Code of Conduct applies within all community spaces, and also applies when an individual is officially representing this project in public or other spaces.

Attribution

This Code of Conduct is adapted from the Contributor Covenant, version 3.0, permanently available at Contributor Covenant.

SPHPlayground Sitemap

Playground home

playground.samiholck.fi

playground.samiholck.fi

Application configuration

App Configuration

playground.samiholck.fi

Application configuration

Docs - config-errorhandling

playground.samiholck.fi

/sphp-config-errorhandling

Security considerations

playground.samiholck.fi

playground.samiholck.fi

/sphp-datetime-home

playground.samiholck.fi

/sphp-datetime-time

playground.samiholck.fi

/sphp-datetime-calendarunit

playground.samiholck.fi

/sphp-datetime-week-and-month

Docs - documentation

playground.samiholck.fi

/sphp-documentation

Commonmark extension

playground.samiholck.fi

/sphp-documentation-commonmark_extension

Docs - reflection

playground.samiholck.fi

/sphp-reflection

Docs - reflection-information

playground.samiholck.fi

/sphp-reflection-information

Docs - reflection-utils-phpwords

playground.samiholck.fi

/sphp-reflection-utils-phpwords

Data Validation

playground.samiholck.fi

/sphp-validators-home

Data Validation

Validating empty data

playground.samiholck.fi

/sphp-validators-validating_empty_data

Data Validation

Validating numeric data

playground.samiholck.fi

/sphp-validators-validating_numeric_data

Data Validation

String validation

playground.samiholck.fi

/sphp-validators-string_validation

Data Validation

Miscellaneous validators

playground.samiholck.fi

/sphp-validators-miscellaneous_validators

Data Validation

Validator containers

playground.samiholck.fi

/sphp-validators-validator_containers

Data Validation

Datetime validation

playground.samiholck.fi

/sphp-validators-datetime_validation

Network components

playground.samiholck.fi

Network components

Docs - network-headers

playground.samiholck.fi

/sphp-network-headers

playground.samiholck.fi

/sphp-database-home

Database clauses-rowsets

playground.samiholck.fi

/sphp-database-clauses-rowsets

Database select

playground.samiholck.fi

/sphp-database-select

Database insert

playground.samiholck.fi

/sphp-database-insert

Database delete

playground.samiholck.fi

/sphp-database-delete

Database update

playground.samiholck.fi

/sphp-database-update

playground.samiholck.fi

Application localization

Docs - localization

playground.samiholck.fi

/sphp-localization

Data Structures

playground.samiholck.fi

/sphp-stdlib-ds-queue

Data Structures

playground.samiholck.fi

/sphp-stdlib-ds-stack

Data Structures

playground.samiholck.fi

/sphp-stdlib-ds-collection

Standard Library

playground.samiholck.fi

/sphp-stdlib-arrays

Standard Library

playground.samiholck.fi

/sphp-stdlib-filesystem

Standard Library

playground.samiholck.fi

/sphp-stdlib-strings

Standard Library

Multibyte String object

playground.samiholck.fi

/sphp-stdlib-mbstring

HTML components

playground.samiholck.fi

/sphp-html-home

HTML components

Attribute management

playground.samiholck.fi

/sphp-html-attribute_management

HTML components

playground.samiholck.fi

/sphp-html-colors-home

HTML components

playground.samiholck.fi

/sphp-html-media

HTML components

playground.samiholck.fi

/sphp-html-multimedia

HTML components

playground.samiholck.fi

/sphp-html-meta

HTML components

playground.samiholck.fi

/sphp-html-scripts

HTML components

playground.samiholck.fi

/sphp-html-lists

HTML components

playground.samiholck.fi

/sphp-html-tables

HTML components

playground.samiholck.fi

/sphp-html-forms

HTML components

playground.samiholck.fi

/sphp-html-factories

playground.samiholck.fi

/sphp-bootstrap-home

Layout components

playground.samiholck.fi

/sphp-bootstrap-layout_components

Navigation components

playground.samiholck.fi

/sphp-bootstrap-navigation_components

Form components

playground.samiholck.fi

/sphp-bootstrap-form_components

Button components

playground.samiholck.fi

/sphp-bootstrap-button_components

Other components

playground.samiholck.fi

/sphp-bootstrap-other_components

playground.samiholck.fi

/sphp-media-icons

Playground AppDocs

playground.samiholck.fi

Playground AppDocs

playground.samiholck.fi

/sphp-apps-calendars

Playground AppDocs

playground.samiholck.fi

/sphp-apps-sports

Playground AppDocs

playground.samiholck.fi

/sphp-apps-contactform

Data Validation

Docs - validators

playground.samiholck.fi

/sphp-validators

Iconsets-search

playground.samiholck.fi

/apps/iconsets-search

Country-data-search

playground.samiholck.fi

/apps/country-data-search

Filetype-icon-search

playground.samiholck.fi

/apps/filetype-icon-search

GNU gettext-search

playground.samiholck.fi

/apps/GNU_gettext-search

Exercise tracker

playground.samiholck.fi

/apps/Exercise_tracker

playground.samiholck.fi

User Agent search engine

playground.samiholck.fi

/apps/tst-ua_search_engine

User Agent traffic ranking

playground.samiholck.fi

/apps/tst-ua_traffic_ranking

User Agent traffic graphs

playground.samiholck.fi

/apps/tst-ua_traffic_graphs

playground.samiholck.fi

playground.samiholck.fi

playground.samiholck.fi

This site uses cookies

In order to work as intended, this site stores cookies on your device. Accepting improves our site and provides you with personalized service. Declining results in one cookie being placed on your device so we remember your choice.