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README.md

PHP-cheat-sheet-extended

GitHub license Build Status Scrutinizer Code Quality

View these cheat sheets live at PHPCheatsheets.com

Much extended version of the Blueshoes PHP cheat sheet for variable type juggling.

Features:

  • Lots of extra variables being tested.
  • Lots of extra comparisons and tests.
  • Variable arithmetic.
  • Results available for a wide variety of PHP versions.

Contributing:

Suggestions for additional test variables, additional comparisons, tests or other improvements are very welcome. Just open an issue or send in a pull request for it.

About the static versions of the sheets:

Static versions of the cheatsheets are generated using a variety of PHP versions.

These PHP versions will include:

  • [Always] Latest release for each minor PHP version at the time of (re-)generation of the static sheets.
  • [Always] The PHP versions included in the last three Ubuntu, Debian and CentOS LTS releases.
  • [Selectively] Popular minor releases based on worldwide usage statistics at the time of (re-)generation of the static sheets.
  • [Selectively] Previously included versions if no other close minor release will be included.

In general, a balance is sought between significance and variety.

Credits:

Changelog:

1.4.0 (April 9 2019): PHP 7.3 and more

  • New tests:
    • is_iterable() in variable tests (PHP 7.1+ only).
    • is_countable() in variable tests (PHP 7.3+ only).
    • version_compare() in variable comparisons.
  • Renewed static sheets:
    • Added static sheets for PHP 7.3.4, 7.3.0, 7.2.17, 7.2.13, 7.2.6, 7.2.3, 7.1.28, 7.1.18, 7.1.5, 7.0.33, 7.0.27, 5.6.40, 5.6.30
    • Removed static sheet generation for PHP 7.2.0, 7.1.12, 7.1.7, 7.1.0, 7.0.26, 7.0.21, 7.0.14, 5.6.32, 5.6.29, 5.6.25, 5.5.16, 5.4.41, 5.3.27, 5.2.6, 5.0.4
  • Updated CastToType submodule to v 2.0.1.
  • Account for Exception text changes in PHP 7.3.
  • Bugfix: arrays and objects are now reset before each test.

Also:

  • The website is now available over SSL.
  • Minor language fixes.
  • Updated the code for the social media and donate buttons.
  • Removed the tablesorting feature from the sitemap.xml file.
  • Minor tweaks to the Travis tests.
  • General housekeeping/CS fixes.

Note: This will be the last version with support for PHP < 5.4.

1.3.8 (November 30 2017): PHP 7.2 has landed

  • Renewed static sheets:
    • Added static sheets for PHP 7.2.0, 7.1.12, 7.0.26, 5.6.32, 5.6.29, 5.6.21
    • Removed static sheet generation for PHP 7.2.0-beta1, 7.1.3, 7.0.17, 5.6.31, 5.6.28, 5.6.20, 5.5.35, 5.4.36

1.3.7 (July 26 2017): PHP 7.2 beta 1 release

  • Renewed static sheets:
    • Added static sheets for PHP 7.2.0-beta1, 7.1.7, 7.0.21, 7.0.19, 7.0,14, 5.6.31
    • Removed static sheet generation for PHP 7.0.12, 7.0.0, 5.6.30, 5.6.0, 5.2.9-2.

1.3.6 (March 23 2017)

  • Renewed static sheets:
    • Added static sheets for PHP 7.1.3, 7.0.17, 7.0,12, 5.6.30
    • Removed static sheet generation for PHP 7.0.13, 7.0.10.

1.3.5 (Dec 3 2016): PHP 7.1 has been released: new arithmetic exceptions

  • Renewed static sheets:
    • Added static sheets for PHP 7.1.0, 7.0.13, 7.0.10, 5.6.28, 5.6.25, 5.5.38, 5.5.35.
    • Removed static sheet generation for PHP 7.1.0-alpha3, 7.0.8, 7.0.6, 5.6.23, 5.6.13, 5.5.37, 5.5.33, 5.5.3.
  • The cheatsheets for PHP 4 are no longer actively maintained (regenerated) except for the version switcher menu.

1.3.4 (Jul 9 2016): What will PHP 7.1 bring ?

  • Renewed static sheets:
    • Added static sheets for PHP 7.1.0-alpha3, 7.0.8, 7.0.6, 5.6.23, 5.6.20, 5.6.16, 5.5.37
    • Removed static sheet generation for PHP 7.0.2, 5.6.19, 5.6.17, 5.6.15, 5.6.9, 5.5.28, 5.3.2.

1.3.3 (Mar 11 2016)

  • Renewed static sheets:
    • Added static sheets for PHP 7.0.4, 7.0.2, 5.6.19, 5.6.17, 5.5.33, 5.5.22.
    • Removed static sheet generation for PHP 5.6.11, 5.5.26, 5.5.21, 5.4.43, 5.4.39.

1.3.2 (Dec 3 2015): PHP 7 is here!

  • Renewed static sheets:
    • Added static sheets for PHP 7.0.0.
    • Removed static sheet generation for PHP 7.0.0-RC6.
  • Fixed static sheets to display the correct 'live' version (moved to server running PHP 5.6.8 - was 5.4.13).

1.3.1 (Nov 2015): PHP 7 is nearly upon us!

  • Renewed static sheets based on currently available and most used versions:
    • Added static sheets for PHP 7.0.0-RC6, 5.6.15, 5.6.13, 5.6.11, 5.6.9, 5.6.7, 5.5.30, 5.5.28, 5.5.21, 5.4.45, 5.4.27, 5.4.41, 5.4.43.
    • Removed static sheet generation for PHP 7.0.0-alpha1, 5.6.10, 5.6.8, 5.6.5, 5.6.2, 5.5.24, 5.5.22, 5.4.42, 5.4.33, 5.4.20, 5.4.11.
  • Fixed "division by zero" error catching for PHP7 as the Exception hierarchy changed in PHP7-alpha2.
  • Some other minor improvements.

1.3 (Jun 2015): Get ready for PHP 7!

  • New tests:
    • <=> in variable comparisons (PHP7+ only).
    • $x ?? ... in variable tests (PHP7+ only).
    • intdiv() in variable arithmetics (PHP7+ only).
    • preg_match() with unicode property codes in variable string tests (PHP5.1+).
  • Added two new variables specifically for the unicode property tests.
  • Renewed static sheets based on currently available and most used versions:
    • Added static sheets for PHP 7.0.0-alpha1, 5.6.10, 5.6.8, 5.6.0, 5.5.26, 5.5.24, 5.5.22, 5.4.42, 5.4.39, 5.4.36.
    • Removed static sheet generation for PHP 5.6.4, 5.5.21, 5.5.20, 5.5.18, 5.4.37, 5.4.35 and 4.3.9.
  • Updated CastToType submodule to v2.0 which brings object casting via that class for all PHP versions in line with PHP7 and fixes a bug in object casting for PHP <= 5.1.

Also:

  • Fixed a hiccup where the "Filter" tab would be shown in PHP 5.1, while the filter extension is only available in PHP 5.2+.
  • Fixed a bug on the "test" cheatsheet where the row variable header would not display properly in the right hand column on low PHP versions.
  • Improved grouping of PHP error messages.
  • Added some more user facing information about the tests run and version quirks.
  • Fixed js error in sitemap stylesheet.
  • Fixed a faulty redirect in .htaccess.
  • Minor UI improvements.
  • Tidying up.

1.2.0.1 (Feb 2015)

  • Added sitemaps.

1.2 (Feb 2015)

  • New tests:
    • pow() in variable arithmetic.
    • ** (PHP 5.6+) in variable arithmetic.
    • . (concatenation) in variable arithmetic - for want of better place.
  • Added two new float variables.
  • Lots of usability improvements:
    • Select PHP version via dropdown.
    • PHP version persists across sheets.
    • Variable legend now auto-expand when user clicks on variable 'footnote' link.
    • 'Pretty' (semantic) urls.
    • Better window titles.
    • Better error handling (404).
  • Static sheets now available in lots more versions (30!), including PHP 5.5, 5.6 which weren't available until now. Retired some older versions which have close versions available anyhow.
  • Fixed:
    • Variable legend for binary integer was missing.

Also:

  • Added donate to charity button.
  • Change over to absolute rather than relative urls.
  • Minor html and css fixes.
  • Script to autogen (nearly) all static sheets.
  • Updated cast-to-type submodule.
  • Upgraded jQuery and jQuery UI to 1.11.2.
  • General tidying up.

1.1 (Feb 2014) - move to own domain.

  • New tests:
    • abs() in variable testing.
  • New pages:
    • 'other cheatsheets'.
    • 'about'.
  • New site styling for own domain.

Also:

  • Added twitter & LinkedIn share buttons.
  • Upgraded jQuery to 1.11.0 and jQuery UI to v 1.10.4.
  • Cleaned up HTML.

1.0 (Sep 2013) - first public version.

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Extended version of the Blueshoes PHP cheat sheet for variable type juggling

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