mb_regex_set_options

(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)

mb_regex_set_options — Set/Get the default options for mbregex functions

说明

mb_regex_set_options(?string $options = null): string

Sets the default options described by options for multibyte regex functions.

参数

options

The options to set. This is a string where each character is an option. To set a mode, the mode character must be the last one set, however there can only be set one mode but multiple options.

**Regex options**
Option	Meaning
i	Ambiguity match on
x	Enables extended pattern form
m	`'.'` matches with newlines
s	`'^'` -> `'\A'`, `'$'` -> `'\Z'`
p	Same as both the `m` and `s` options
l	Finds longest matches
n	Ignores empty matches
e	eval() resulting code

**Regex syntax modes**
Mode	Meaning
j	Java (Sun java.util.regex)
u	GNU regex
g	grep
c	Emacs
r	Ruby
z	Perl
b	POSIX Basic regex
d	POSIX Extended regex

返回值

The previous options. If options is omitted or null, it returns the string that describes the current options.

更新日志

版本	说明
8.0.0	If the parameter `options` is given and not `null`, the previous options are returned. Formerly, the current options have been returned.
8.0.0	`options` is nullable now.

参见

mb_split() - 使用正则表达式分割多字节字符串
mb_ereg() - Regular expression match with multibyte support
mb_eregi() - Regular expression match ignoring case with multibyte support

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User Contributed Notes 2 notes

down

indeyets at php dot net ¶

12 years ago


It's a bit trickier, than patryk wrote:

There are parameters (you can specify several of these at the same time):

'i': ONIG_OPTION_IGNORECASE;
'x': ONIG_OPTION_EXTEND;
'm': ONIG_OPTION_MULTILINE;
's': ONIG_OPTION_SINGLELINE;
'p': ONIG_OPTION_MULTILINE | ONIG_OPTION_SINGLELINE;
'l': ONIG_OPTION_FIND_LONGEST;
'n': ONIG_OPTION_FIND_NOT_EMPTY;
'e': eval() resulting code

And there are "modes" (if you specify several of these, the LAST one will be used):
'j': ONIG_SYNTAX_JAVA;
'u': ONIG_SYNTAX_GNU_REGEX;
'g': ONIG_SYNTAX_GREP;
'c': ONIG_SYNTAX_EMACS;
'r': ONIG_SYNTAX_RUBY;
'z': ONIG_SYNTAX_PERL;
'b': ONIG_SYNTAX_POSIX_BASIC;
'd': ONIG_SYNTAX_POSIX_EXTENDED;

You can find descriptions of these constants here: http://www.geocities.jp/kosako3/oniguruma/doc/API.txt

down

patryk dot szczyglowski at gmail dot com ¶

13 years ago


Supported options are:

i - ONIG_OPTION_IGNORECASE
x - ONIG_OPTION_EXTEND
m - ONIG_OPTION_MULTILINE
s - ONIG_OPTION_SINGLELINE
p - ONIG_OPTION_MULTILINE | ONIG_OPTION_SINGLELINE
l - ONIG_OPTION_FIND_LONGEST
n - ONIG_OPTION_FIND_NOT_EMPTY
j - ONIG_SYNTAX_JAVA
u - ONIG_SYNTAX_GNU_REGEX
g - ONIG_SYNTAX_GREP
c - ONIG_SYNTAX_EMACS
r - ONIG_SYNTAX_RUBY
z - ONIG_SYNTAX_PERL
b - ONIG_SYNTAX_POSIX_BASIC
d - ONIG_SYNTAX_POSIX_EXTENDED
e - eval() resulting code

Constants above are from Oniguruma regexp library, which is used internally. Default value for PHP 5.2.x is 'pr'.

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官方地址：https://www.php.net/manual/en/function.mb-regex-set-options.php

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PHP官方手册 - 互联网笔记

mb_regex_set_options

说明

参数

返回值

更新日志

参见

User Contributed Notes 2 notes