PHPackages                             symfony/polyfill-php55 - PHPackages - PHPackages  [Skip to content](#main-content)[PHPackages](/)[Directory](/)[Categories](/categories)[Trending](/trending)[Leaderboard](/leaderboard)[Changelog](/changelog)[Analyze](/analyze)[Collections](/collections)[Log in](/login)[Sign up](/register)

1. [Directory](/)
2. /
3. [Utility & Helpers](/categories/utility)
4. /
5. symfony/polyfill-php55

ActiveMetapackage[Utility & Helpers](/categories/utility)

symfony/polyfill-php55
======================

Symfony polyfill backporting some PHP 5.5+ features to lower PHP versions

v1.20.0(5y ago)10731.9M↓16.5%29MITPHP >=7.1

Since Nov 4Pushed 2y ago3 watchersCompare

[ Source](https://github.com/symfony/polyfill-php55)[ Packagist](https://packagist.org/packages/symfony/polyfill-php55)[ Docs](https://symfony.com)[ Fund](https://symfony.com/sponsor)[ GitHub Sponsors](https://github.com/fabpot)[ RSS](/packages/symfony-polyfill-php55/feed)WikiDiscussions 1.x Synced 1w ago

READMEChangelogDependenciesVersions (29)Used By (9)Security (1)

Symfony Polyfill / Php55
========================

[](#symfony-polyfill--php55)

This component provides functions unavailable in releases prior to PHP 5.5:

- [`boolval`](https://php.net/boolval)
- [`json_last_error_msg`](https://php.net/json_last_error_msg)
- [`array_column`](https://php.net/array_column)
- [`hash_pbkdf2`](https://php.net/hash_pbkdf2)
- `password_*` functions (from [ircmaxell/password\_compat](https://github.com/ircmaxell/password_compat))

More information can be found in the [main Polyfill README](https://github.com/symfony/polyfill/blob/master/README.md).

License
=======

[](#license)

This library is released under the [MIT license](LICENSE).

###  Health Score

48

—

FairBetter than 94% of packages

Maintenance20

Infrequent updates — may be unmaintained

Popularity60

Solid adoption and visibility

Community28

Small or concentrated contributor base

Maturity69

Established project with proven stability

 Bus Factor1

Top contributor holds 56.4% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Every ~65 days

Recently: every ~25 days

Total

29

Last Release

2055d ago

PHP version history (2 changes)v1.0.0PHP >=5.3.3

v1.20.0PHP >=7.1

### Community

Maintainers

![](https://avatars.githubusercontent.com/u/47313?v=4)[Fabien Potencier](/maintainers/fabpot)[@fabpot](https://github.com/fabpot)

---

Top Contributors

[![nicolas-grekas](https://avatars.githubusercontent.com/u/243674?v=4)](https://github.com/nicolas-grekas "nicolas-grekas (22 commits)")[![fabpot](https://avatars.githubusercontent.com/u/47313?v=4)](https://github.com/fabpot "fabpot (3 commits)")[![paragonie-scott](https://avatars.githubusercontent.com/u/11591518?v=4)](https://github.com/paragonie-scott "paragonie-scott (2 commits)")[![keradus](https://avatars.githubusercontent.com/u/2716794?v=4)](https://github.com/keradus "keradus (2 commits)")[![JakeFr](https://avatars.githubusercontent.com/u/5176129?v=4)](https://github.com/JakeFr "JakeFr (1 commits)")[![jeroenvisser101](https://avatars.githubusercontent.com/u/1941348?v=4)](https://github.com/jeroenvisser101 "jeroenvisser101 (1 commits)")[![lyrixx](https://avatars.githubusercontent.com/u/408368?v=4)](https://github.com/lyrixx "lyrixx (1 commits)")[![robfrawley](https://avatars.githubusercontent.com/u/3967713?v=4)](https://github.com/robfrawley "robfrawley (1 commits)")[![samnela](https://avatars.githubusercontent.com/u/1852108?v=4)](https://github.com/samnela "samnela (1 commits)")[![azjezz](https://avatars.githubusercontent.com/u/29315886?v=4)](https://github.com/azjezz "azjezz (1 commits)")[![stof](https://avatars.githubusercontent.com/u/439401?v=4)](https://github.com/stof "stof (1 commits)")[![carusogabriel](https://avatars.githubusercontent.com/u/16328050?v=4)](https://github.com/carusogabriel "carusogabriel (1 commits)")[![GrahamCampbell](https://avatars.githubusercontent.com/u/2829600?v=4)](https://github.com/GrahamCampbell "GrahamCampbell (1 commits)")[![IonBazan](https://avatars.githubusercontent.com/u/1985514?v=4)](https://github.com/IonBazan "IonBazan (1 commits)")

---

Tags

componentphppolyfillsymfonysymfony-componentcompatibilityportablepolyfillshim

### Embed Badge

![Health badge](/badges/symfony-polyfill-php55/health.svg)

```
[![Health](https://phpackages.com/badges/symfony-polyfill-php55/health.svg)](https://phpackages.com/packages/symfony-polyfill-php55)
```

###  Alternatives

[symfony/polyfill-mbstring

Symfony polyfill for the Mbstring extension

7.8k1.2B683](/packages/symfony-polyfill-mbstring)[symfony/polyfill-php72

Symfony polyfill backporting some PHP 7.2+ features to lower PHP versions

4.7k684.0M35](/packages/symfony-polyfill-php72)[symfony/polyfill-intl-idn

Symfony polyfill for intl's idn\_to\_ascii and idn\_to\_utf8 functions

3.4k806.5M131](/packages/symfony-polyfill-intl-idn)[symfony/polyfill-intl-normalizer

Symfony polyfill for intl's Normalizer class and related functions

2.1k866.4M60](/packages/symfony-polyfill-intl-normalizer)[symfony/polyfill-php73

Symfony polyfill backporting some PHP 7.3+ features to lower PHP versions

2.4k595.3M79](/packages/symfony-polyfill-php73)[symfony/polyfill-php80

Symfony polyfill backporting some PHP 8.0+ features to lower PHP versions

1.7k850.1M526](/packages/symfony-polyfill-php80)

PHPackages © 2026

[Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)