PHP Backwards Compatibility Library: Functions of newer PHP versions for older versions

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Last Updated		Ratings				Unique User Downloads		Download Rankings
2026-01-15 (2 days ago)		Not yet rated by the users				Total: 94		All time: 9,892 This week: 46

Version		License		PHP version		Categories
`phpbcl` 2.1.0		Custom (specified...		5.6		PHP 5, Language

Description

Author

Christos Drogidis

This package provides functions of newer PHP versions for older versions.

It provides scripts that implement functions only available in newer PHP versions as functions built-in in the PHP core engine. The parts work in older PHP versions.

A main script checks the current PHP version and loads that implement the functions of newer PHP versions.

Innovation Award

June 2023
Number 2

With every new PHP version, changes are made to the PHP language that may introduce incompatibilities between versions.

If your PHP applications rely on parts of the language that were changed, you may need to change your code to keep it working in the new PHP version that runs on the machine your PHP application is running.

Suppose your PHP application relies on PHP function or other parts of the language that changed in a backward incompatibility way. In that case, you may need to change your PHP application code to adapt to the PHP version changes.

This package provides a library of scripts with PHP functions that emulate the functions introduced in newer PHP versions.

Using this library, you can adapt your PHP application code to make it work in a newer PHP version without having to upgrade the PHP version that you use in the environment your PHP application is running.

This way, you can change your PHP application code to prepare to make it work in newer PHP versions making a smooth transition between PHP versions.

Manuel Lemos

Christos Drogidis

Performance

Level

Name:	Christos Drogidis `<contact>`
Classes:	34 packages by Christos Drogidis
Country:	Greece
Age:	???
All time rank:	3794	23 in Greece
Week rank:	5	1 in Greece

Level 1

Innovation award

Nominee: 20x

Winner: 2x

Instructions

Installation and use this library

Download latest release
Unzip package in your working directory
Add in index.php or master php file the below code :

$path = '[YOUR SITE PATH]';

include $path . '/phpBCL/autoload.php';

Example


<?php


/**


 *   __ _  ___  ___ ___   ___   ___     ___   ___


 *  / _` |/  / / __/ _ \ / _ \ /  /    / _ \ /  /


 * | (_| |\  \| (_| (_) | (_) |\  \   | (_) |\  \


 *  \__,_|/__/ \___\___/ \___/ /__/    \___/ /__/


 *  


 **************************************************************************************


 * @ASCOOS-NAME            : ASCOOS OS                                                   *


 * @ASCOOS-VERSION         : 1.0.0                                                       *


 * @ASCOOS-CATEGORY        : Web OS                                                      *


 * @ASCOOS-DESCRIPTION  : A Web 5.0 Kernel for decentralized web and IoT applications *


 * @ASCOOS-CREATOR         : Drogidis Christos                                           *


 * @ASCOOS-SITE            : www.ascoos.com                                              *


 * @ASCOOS-BUGS         : https://issues.ascoos.com                                   *


 * @ASCOOS-SUPPORT      : [email protected]                                          *


 * @ASCOOS-LICENSE         : [Commercial] http://docs.ascoos.com/lics/ascoos/AGL.html    *


 * @ASCOOS-COPYRIGHT       : Copyright (c) 2007 - 2026, AlexSoft Software.               *


 **************************************************************************************


 *


 * @package                : ASCOOS OS - phpBCL


 * @subpackage             : Example clamp function


 * @source                 : /phpBCL/test/86_clamp.php


 * @description         : 


 * @fileNo                 : 


 * @version                : 2.1.0


 * @build               : 26


 * @created                : 2026-01-15 20:00:00 UTC+2


 * @updated             : 2026-01-16 00:28:33 UTC+2


 * @author                 : Drogidis Christos


 * @authorSite             : www.alexsoft.gr


 * @support             : [email protected]


 * @license             : AGL-F (Ascoos General License - Free)


 * 


 * @since 2.1.0


 * @since PHP 5.6.40


 */


require_once("../autoload.php");


?>


<html>


<head>


    <style>


        h1 {font-size: 2em; font-weight: bold; width: 100% !important; }


        h2 {font-size: 1.5em; font-weight: bold; padding: 5px; color: white; background-color: black; width: 100% !important; margin: 4px 0;}


    </style>


</head>


<body>


<?php


echo '<h1>PHP VERSION: '.phpversion().'</h1>';


echo '<h2>TEST PHP 8.6 [ <b>clamp()</b> ] </h2>';





echo '<h3>String values</h3>';


echo clamp('P', 'A', 'Z').'<br>'; // "P"


echo clamp('P', 'X', 'Z').'<br>'; // "X"


echo clamp('P', 'A', 'C').'<br>'; // "C"


echo clamp('AAA', 'AA', 'Z').'<br>'; // "AAA"





echo '<h3>Boolean values</h3>';


echo clamp(5, false, true).'<br>'; // 5


echo (clamp(true, false, true) ? 'true':'false') .'<br>'; // true


echo (clamp(true, false, false) ? 'true':'false').'<br>'; // false


echo (clamp(false, true, true) ? 'true':'false').'<br>'; // true


echo (clamp(false, true, 5) ? 'true':'false').'<br>'; // true





echo '<h3>Arrays</h3>';


echo var_export(clamp(5, [], [])).'<br>'; // []


echo var_export(clamp(5, 0, [])).'<br>'; // 5


echo var_export(clamp(5, false, [])).'<br>'; // 5


echo var_export(clamp([3], [1], [5])).'<br>'; // [3]


echo var_export(clamp([1], [3], [5])).'<br>'; // [3]


echo var_export(clamp([1, 4], [3], [1, 5])).'<br>'; // [1, 4]





echo '<h3>Objects</h3>';


echo var_export(clamp(new DateTimeImmutable('2026-01-08'), new DateTimeImmutable('2026-01-01'), new DateTimeImmutable('2026-12-31')));


// DateTimeImmutable('2026-01-08')


// ?? PHP 5.6.40 --> DateTimeImmutable::__set_state(array( 'date' => '2026-01-08 00:00:00.000000', 'timezone_type' => 3, 'timezone' => 'Europe/Athens', )) 


?>


</body>


</html>

Details

Changelog

2.1.0 [2026-01-16]

Fix `composer.json`
Fix `libin.json`

PHP < 8.6

Added function `clamp` : Returns the value clamped between min and max (nearest bound if out of range). Throws ValueError on invalid args (NAN, min > max).

phpbcl Examples

Added example file `86_clamp.php` : Returns the value clamped between min and max (nearest bound if out of range).

2.0.5 [2025-04-27]

Fix `composer.json`

2.0.4 [2025-04-27]

PHP < 8.5

Added function `array_first` : Returns the first value of a given array.
Added function `array_last` : Returns the last value of a given array.
Added function `locale_is_right_to_left` : Returns whether the given $locale has an RTL script.
Added function `get_error_handler` : Returns the currently set error handler, or null if none is set.
Added function `get_exception_handler` : Returns the currently set exception handler, or null if is none set.

PHP < 8.3

Fixed function `mb_str_pad` for use in PHP >= 5.6.40

phpbcl Examples

Added example file `85_array_first.php` : Returns the first value of a given array.
Added example file `85_array_last.php` : Returns the last value of a given array.
Added example file `85_locale_is_right_to_left.php` : Returns whether the given $locale has an RTL script.
Added example file `85_get_error_handler.php` : Returns the currently set error handler, or null if none is set.
Added example file `85_get_exception_handler.php` : Returns the currently set exception handler, or null if is none set.

2.0.3 [2025-02-22]

Fix `compat_php83.php` file.

2.0.2 [2024-12-08]

phpbcl Core and Examples

Updated autoload.php

2.0.1 [2024-12-01]

phpbcl Core and Examples

Fixed composer.json file
Fixed libin.json file

2.0.0 [2024-11-29]

phpbcl Core and Examples

Added support for LibIN Installer
Added support for PHPClasses composer installer

PHP < 8.5

`CONSTANTS`

Added dynamic Constant `PHP_BUILD_DATE` : that is assigned the time and date the PHP binary is built.

`EXAMPLES`

Added example file `85_php_build_date.php` :

1.1.4 [2024-11-12]

PHP < 8.4

Added Function `intltz_get_iana_id` -- Get the IANA identifier from a given timezone
ADDED EXAMPLE FILE : `84_intltz_get_iana_id.php`
UPDATED EXAMPLE FILE : `84_grapheme_str_split.php`

1.1.3 [2024-10-22]

PHP < 8.4

Fixed Function `bcdivmod` for use in PHP < 7.2.0

phpbcl Core and Examples

The examples have been changed to adapt to the new structure of the package.
Removed some source code from all files to make it more accessible to use of the package.
```
// Run only Ascoos Cms
define( 'ALEXSOFT_RUN_CMS', true ); //REMOVED
```
and

// $cms_path is Ascoos Cms global variable
require_once($cms_path."/phpbcl/src/coreCompatibilities.php"); // REMOVED

They have been replaced with the internal variable $phpCBL of the package, which you do not need to call.

>You should load only the file autoload.php file into your code.

$path = '[YOUR SITE PATH]';
include $path . '/phpbcl/autoload.php'; / // For general use

include '../autoload.php'; // Used by phpbcl examples

1.1.2 [2024-10-04]

Updated README.md

PHP < 8.4

Added Function `bcdivmod`
ADDED EXAMPLE FILE : `84_bcdivmod.php`
ADDED EXAMPLE FILE : `84_array_find.php`
ADDED EXAMPLE FILE : `84_array_find_key.php`
ADDED EXAMPLE FILE : `84_array_all.php`
ADDED EXAMPLE FILE : `84_array_any.php`
ADDED EXAMPLE FILE : `84_grapheme_str_split.php`

1.1.1 [2024-09-23]

Updated README.md

PHP < 8.4

Added Function `array_find`
Added Function `array_find_key`
Added Function `array_all`
Added Function `array_any`
Added Function `grapheme_str_split`

1.1.0 [2024-03-20]

Updated README.md
ADDED FILE : `LICENSE_AGL-F.md` -- Package License `AGL-F` (Ascoos General License - Free Use).
ADDED EXAMPLE FILE : `84__http_get_last_response_headers.php`

PHP < 8.4

Added Function `http_get_last_response_headers`
Added Function `http_clear_last_response_headers`
UPDATED FUNCTIONS : `mb_trim`, `mb_ltrim`, `mbrtrim`

1.0.9 [2024-02-28]

PHP < 8.3.0

Added Function `stream_context_set_options` -- Sets options on the specified context.

PHP < 8.2.0

Added Function `openssl_cipher_key_length` -- Gets the cipher key length.

PHP < 8.0.0

Added Function `preg_last_error_msg` -- Returns the error message of the last PCRE regex execution.
Added Function `get_debug_type` -- Returns the resolved name of the PHP variable value.
Added Function `get_resource_id` -- Returns an integer identifier for the given resource
Added Function `fdiv` -- Divides two numbers, according to IEEE 754

PHP < 7.1.0

Added Function `openssl_get_curve_names` -- Gets the list of available curve names

PHP < 7.0.0

Added Function `intdiv` -- Integer division

SIMILAR

Added Function `alf_get_class()` -- For return getClass() without parameters on PHP >= 8.3.0

1.0.8 [2024-02-27]

ADDED FILE : compat_error.php
Added Class Error `Error`
Added Class Error `TypeError`
Added Class Error `ValueError`

PHP < 8.2.0

Added Function `ini_parse_quantity`
FIXED FUNCTION : `mysqli_execute_query`

1.0.7 [2024-02-22]

PHP < 8.4.0

Added phpbcl Function `alf_preg_quote`
FIXED FUNCTIONS : `mb_trim`, `mb_ltrim`, `mbrtrim` for use on PHP 5.6
FIXED EXAMPLE : `84__mb_trim.php`
ADDED SCREENSHOTS

1.0.6 [2024-02-21]

FIXED EXAMPLE : `81__array_is_list.php`
FIXED EXAMPLE : `84_mb_ucfirst.php`
ADDED SCREENSHOTS

1.0.5 [2024-02-20]

PHP < 8.4.0

ADDED FILE: `/src/phpbcl.php`
Added phpbcl Function `validate_encoding`
Added Function `mb_ltrim`
Added Function `mb_rtrim`
Added Function `mb_trim`
ADDED EXAMPLE: `/test/84__mb_trim.php`
Updated Function `mb_ucfirst`
Updated Function `mb_lcfirst`
Updated Example `/test/84__mb_ucfirst.php`

1.0.4 [2024-02-17]

PHP < 8.4.0

Added file `src/compat/compat_php84x.php`
Added Function `mb_ucfirst`
Added Function `mb_lcfirst`
ADDED EXAMPLE: `/test/84__mb_ucfirst.php`

1.0.3 [2023-07-12]

PHP < 8.2.0

Added Function `mysqli_execute_query`

1.0.2 [2023-07-07]

ADDED EXAMPLES: In folder /phpbcl/test/
Fixed : Fixed paths for call phpbcl library.

PHP < 4.3.0

Added Constants: `MB_CASE_UPPER`, `MB_CASE_LOWER`, `MB_CASE_TITLE`
Added Function: `mb_convert_case`

PHP < 5.5.0

Added Functions: `array_column`, `boolval`, `json_last_error_msg`

PHP < 7.3.0

Added Constants: `MB_CASE_FOLD`, `MB_CASE_UPPER_SIMPLE`, `MB_CASE_LOWER_SIMPLE`, `MB_CASE_TITLE_SIMPLE`, `MB_CASE_FOLD_SIMPLE`. Used by ASCOOS LIBRARY FUNCTION `alf_mb_convert_case` (compat_similar.php)
Updated Functions: `array_key_first`, `array_key_last`

ASCOOS LIBRARY FUNCTION:

Added `alf_mb_convert_case` For full compatible similar mb_convert_case.

PHP < 7.4.0

Added Function: `mb_str_split`

PHP < 8.0.0

Updated Functions: `str_contains`, `str_ends_with`, `str_starts_with`
Updated Classes : `Stringable`, `PhpToken`

PHP < 8.1.0

Updated Function: `array_is_list`

PHP < 8.3.0

Added Function: `mb_str_pad`

1.0.1 [2023-06-27]

Added file compat_similar.php (for similar functions)

PHP < 7.1.0

Added Function: `is_iterable`

PHP < 7.3.0

Added Functions: `array_key_first`, `array_key_last`, `is_countable`

PHP < 8.0.0

Added Class `ValueError` (For php < 8.0.0)

1.0.0

Creating Compatibilities

8.4 grapheme_str_split

8.4 intltz_get_iana_id

8.4 mb_trim

8.4 mb_ucfirst & mb_lcfirst functions

PHP 81 - array_is_list()

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Screenshots (6)

Files (68)

File	Role	Description
`docs` (2 files)
`screenshots` (9 files)
`src` (3 files, 1 directory)
`test` (24 files)
`autoload.php`	Appl.	Application script
`CHANGELOG.md`	Doc.	ChangeLogs
`composer.json`	Data	Auxiliary data
`libin.json`	Data	Auxiliary data
`LICENSE_AGL-F.md`	Lic.	License text
`README.md`	Doc.	Documentation

Files (68)

docs

File	Role	Description
`index.html`	Doc.	Documentation
`why-you-need-phpBCL.md`	Data	Auxiliary data

Files (68)

screenshots

File	Role	Description
`81__array_is_list.png`	Icon	Icon image
`84__mb_trim.png`	Icon	Icon image
`84__mb_trim_640.png`	Icon	Icon image
`84__mb_ucfirst.png`	Icon	Icon image
`84__mb_ucfirst_640.png`	Icon	Icon image
`86_clamp.png`	Icon	Icon image
`awes-test-1-800.png`	Data	Auxiliary data
`index.html`	Doc.	Documentation
`mb_trim.jpeg`	Data	Auxiliary data

Files (68)

src

File	Role	Description
`compat` (18 files)
`coreCompatibilities.php`	Appl.	Compatibilities Manager
`index.html`	Doc.	Documentation
`phpBCL.php`	Class	phpBCL Manager

Files (68)

src

compat

File	Role	Description
`compat_consts.php`	Class	Consts Script
`compat_deprecated.php`	Class	Supports Deprecated-Removed Functions
`compat_error.php`	Class	Errors Functions
`compat_php43x.php`	Class	Supports functions for PHP < 4.3
`compat_php55x.php`	Class	Supports functions for PHP < 5.5
`compat_php70x.php`	Class	Supports functions for PHP < 7.0
`compat_php71x.php`	Class	Supports functions for PHP < 7.1
`compat_php73x.php`	Class	Supports functions for PHP < 7.3
`compat_php74x.php`	Class	Supports functions for PHP < 7.4
`compat_php80x.php`	Class	Supports functions for PHP < 8.0
`compat_php81x.php`	Class	Supports functions for PHP < 8.1
`compat_php82x.php`	Class	Supports functions for PHP < 8.2
`compat_php83x.php`	Class	Supports functions for PHP < 8.3
`compat_php84x.php`	Class	Supports functions for PHP < 8.4
`compat_php85x.php`	Class	Supports functions for PHP < 8.5
`compat_php86x.php`	Class	Class source
`compat_similar.php`	Class	Ascoos Similar Functions
`index.html`	Doc.	Documentation

Files (68)

test

File	Role	Description
`55__array_column.php`	Example	Example script
`73__mb_convert_case.php`	Example	Example script
`74_mb_str_split.php`	Example	Example script
`80__class_Stringable.php`	Example	Example script
`81__array_is_list.php`	Example	Example script
`83__mb_str_pad.php`	Example	Example script
`84_array_all.php`	Example	Checks whether the $callback returns TRUE for ALL the array elements.
`84_array_any.php`	Example	Checks whether the $callback returns TRUE for ANY of the array elements.
`84_array_find .php`	Example	Returns the VALUE of the first element from $array for which the $callback returns true. Returns NULL if no matching element is found.
`84_array_find_key.php`	Example	Returns the KEY of the first element from $array for which the $callback returns TRUE. If no matching element is found the function returns NULL.
`84_bcdivmod.php`	Example	Returns an array with the quotient (whole values) as a string, and the remainder as a string containing $scale number of decimal values
`84_grapheme_str_split.php`	Example	Splits a string into an array of individual or chunks of graphemes.
`84_intltz_get_iana_id.php`	Example	Get the IANA identifier from a given timezone
`84__http_get_last_response_headers.php`	Example	Get and Clear Last Response Headers
`84__mb_trim.php`	Example	Example script
`84__mb_ucfirst.php`	Example	Unit test script
`85_array_first.php`	Example	Returns the first value of a given array.
`85_array_last.php`	Example	Returns the last value of a given array.
`85_get_error_handler.php`	Example	Returns the currently set error handler, or null if none is set.
`85_get_exception_handler.php`	Example	Returns the currently set exception handler, or null if is none set.
`85_locale_is_right_to_left.php`	Example	Returns whether the given $locale has an RTL script.
`85_php_build_date.php`	Example	Example script
`86_clamp.php`	Example	Example script
`example.php`	Example	Example script

The PHP Classes site has supported package installation using the Composer tool since 2013, as you may verify by reading this instructions page.

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	phpbcl-2026-01-15.zip 1039KB
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Total:	94
This week:	0

All time:	9,892
This week:	46

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