mb_regex_set_options

(PHP 4 >= 4.3.0, PHP 5)

mb_regex_set_options — Set/Get the default options for mbregex functions

说明

string mb_regex_set_options ([ string $options = "msr" ] )

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

mb_split() - Split multibyte string using regular expression
mb_ereg() - Regular expression match with multibyte support
mb_eregi() - Regular expression match ignoring case with multibyte support

PHP手册 - N: Set/Get the default options for mbregex functions

用户评论:

indeyets at php dot net (27-Nov-2009 10:58)

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 (12-Dec-2008 06:12)

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'.