symfony/polyfill
Symfony polyfills backporting features to lower PHP versions
时间：2015-11-04 21:15
sarciszewski/php-future
Polyfill new (5.6+) features into old (5.4+) versions of PHP
时间：2015-05-13 15:53
comsolit/date-time-immutable
Polyfill for the DateTimeImmutable class added in PHP 5.5.0
时间：2015-03-19 11:12
resonantcore/php-future
Polyfill new (5.6+) features into old (5.4+) versions of PHP
时间：2015-03-02 21:51
alsvanzelf/gaps
Stop minding the gap. Extend php with these polyfills and missing functionality. Right now, `array_splice_preserve_keys`.
时间：2015-02-04 20:02
thewilkybarkid/date-time-immutable
Polyfill for the DateTimeImmutable class added in PHP 5.5.0
时间：2013-10-28 14:12