多字节字符串 函数
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mb_regex_set_options

(PHP 4 >= 4.3.0, PHP 5)

mb_regex_set_optionsSet/Get the default options for mbregex functions

说明

string mb_regex_set_options ([ string $options ] )

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

参数

options

The options to set. This is a 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, it returns the string that describes the current options.

参见


多字节字符串 函数
在线手册:中文  英文

用户评论:

indeyets at php dot net (2009-11-27 14:58:18)

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

patryk dot szczyglowski at gmail dot com (2008-12-12 10:12:41)

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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