- PHP 手册
- 附录
- 从 PHP 7.2.x 移植到 PHP 7.3.x
新特性
PHP 核心
更灵活的 Heredoc 和 Nowdoc 语法
Heredoc 和 Nowdoc 语法变的更灵活。现在支持闭合标记符的缩进，并且不再强制闭合标记符的换行。
Array Destructuring supports Reference Assignments
Array destructuring now supports reference assignments using the syntax
[&$a, [$b, &$c]] = $d. The same is also supported
for list().
Instanceof Operator accepts Literals
instanceof now allows literals as the first operand, in
which case the result is always false.
CompileError Exception instead of some Compilation Errors
A new CompileError exception has been added, from
which ParseError inherits. A small number of
compilation errors will now throw a CompileError
instead of generating a fatal error. Currently this only affects compilation
errors that may be thrown by token_get_all() in
TOKEN_PARSE mode, but more errors may be converted in
the future.
Trailing Commas are allowed in Calls
Trailing commas in function and method calls are now allowed.
Argon2id Support
The --with-password-argon2[=dir] configure
argument now provides support for both Argon2i and Argon2id hashes in the
password_hash(), password_verify(),
password_get_info(), and
password_needs_rehash() functions. Passwords may be hashed
and verified using the PASSWORD_ARGON2ID constant.
Support for both Argon2i and Argon2id in the password_*()
functions now requires PHP be linked against libargon2 reference library ≥
20161029.
FastCGI Process Manager
New options have been added to customize the FPM logging:
-
log_limit - This global option can be used for setting the log limit for the logged line which allows to log messages longer than 1024 characters without wrapping. It also fixes various wrapping issues.
-
log_buffering - This global option allows an experimental logging without extra buffering.
-
decorate_workers_output -
This pool option allows to disable the output decoration for workers
output when
catch_workers_outputis enabled.
BC Math Functions
bcscale() can now also be used as getter to retrieve the current scale in use.
Lightweight Directory Access Protocol
Full support for LDAP Controls has been added to the LDAP querying functions and ldap_parse_result():
-
A
$serverctrlsparameter to send controls to the server in ldap_add(), ldap_mod_replace(), ldap_mod_add(), ldap_mod_del(), ldap_rename(), ldap_compare(), ldap_delete(), ldap_modify_batch(), ldap_search(), ldap_list() and ldap_read() has been added. -
The out parameter
$serverctrlsto get controls from the server in ldap_parse_result() has been added. -
Support for
LDAP_OPT_SERVER_CONTROLSandLDAP_OPT_CLIENT_CONTROLSin ldap_get_option() and ldap_set_option() has been fixed.
Multibyte String Functions
Full Case-Mapping and Case-Folding Support
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:
<?php
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)
Case-Insensitive String Operations use Case-Folding
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_CASE_TITLE performs Title-Case Conversion
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 apostrophes.
Unicode 11 Support
The Multibyte String data tables have been updated for Unicode 11.
Long String Support
The Multibyte String Functions now correctly support strings larger than 2GB.
Performance Improvements
Performance of the Multibyte String extension has been significantly improved across the board. The largest improvements are in case conversion functions.
Named Captures Support
The 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:
<?php
mb_ereg('(?<word>\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:
<?php
mb_ereg_replace('\s*(?<word>\w+)\s*', "_\k<word>_\k'word'_", ' foo ');
// => "_foo_foo_"
?>
\k<> and \k'' can also be used for numbered
references, which also works with group numbers greater than 9.
Readline
Support for the completion_append_character and
completion_suppress_append options has been added to
readline_info(). These options are only available if PHP
is linked against libreadline (rather than libedit).
User Contributed Notes 1 note
up down 7 yoander dot valdes at yahoo dot com ¶3 years ago
"Trailing commas in function and method calls are now allowed" means function parameters, example:
<?php
function my1() {
echo "xxxxxx\n";
}
function my2() {
echo "yyyyyy\n";
}
my1(),my2(); // PHP Parse error: syntax error
my1(,); // PHP Parse error: syntax error
my1(1,); my2(2,); // OK
?>
add a note
官方地址：https://www.php.net/manual/en/migration73.new-features.php