PHP 7.3.0 がリリースされました。
PHP: PHP 7.3.0 Release Announcement では、主な新機能として以下の７つが挙げられています。
- Flexible Heredoc and Nowdoc Syntax
- PCRE2 Migration
- Multiple MBString Improvements
- LDAP Controls Support
- Improved FPM Logging
- Windows File Deletion Improvements
- Several Deprecations
詳しく知りたい場合は、php-src/UPGRADING 2. New Features を読むとよさそうです。
Flexible Heredoc and Nowdoc Syntax
Core: . Implemented flexible heredoc and nowdoc syntax: The closing marker for doc strings is no longer required to be followed by a semicolon or newline. Additionally the closing marker may be indented, in which case the indentation will be stripped from all lines in the doc string.
PCRE: . The PCRE extension has been upgraded to PCRE2, which may cause minor behavioral changes (for instance, character ranges in classes are now more strictly interpreted), and augments the existing regular expression syntax. See for details.
Multiple MBString Improvements
MBString: . Support for full case-mapping and case-folding has been added. Unlike simple case-mapping, full case-mapping may change the length of the string. For example: mb_strtoupper("Straße") // Produces STRAßE on PHP 7.2 // Produces STRASSE on PHP 7.3 The different casing mapping and folding modes are available through mb_convert_case(): . MB_CASE_LOWER (used by mb_strtolower) . MB_CASE_UPPER (used by mb_strtoupper) . MB_CASE_TITLE . MB_CASE_FOLD . MB_CASE_LOWER_SIMPLE . MB_CASE_UPPER_SIMPLE . MB_CASE_TITLE_SIMPLE . MB_CASE_FOLD_SIMPLE (used by case-insensitive operations) Only unconditional, language agnostic full case-mapping is performed. . Case-insensitive string operations now use case-folding instead of case- mapping during comparisons. This means that more characters will be considered (case insensitively) equal now. . mb_convert_case() with MB_CASE_TITLE now performs title-case conversion based on the Cased and CaseIgnorable derived Unicode properties. In particular this also improves handling of quotes and apostophes. . Data tables have been updated for Unicode 11. . Mbstring now correctly supports strings larger than 2GB. . Performance of the mbstring extension has been significantly improved across the board. The largest improvements are in case conversion functions. . mb_ereg_*() functions now support named captures. Matching functions like mb_ereg() will now return named captures both using their group number and their name, similar to PCRE: mb_ereg('(?\w+)', '国', $matches); // => [0 => "国", 1 => "国", "word" => "国"]; Additionally, mb_ereg_replace() now supports the \k<> and \k'' notations to reference named captures in the replacement string: mb_ereg_replace('\s*(?\w+)\s*', "_\k_\k'word'_", ' foo '); // => "_foo_foo_" \k<> and \k'' can also be used for numbered references, which also works with group numbers greater than 9.