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 $options = null): string
Sets the default options described by options
for multibyte regex functions.
参数
-
options
-
The options to set. This is a string where each
character is an option. To set a mode, the mode
character must be the last one set, however there
can only be set one mode but multiple options.
Regex options
| Option |
Meaning |
更新日志 |
| i |
Ambiguity match on |
|
| x |
Enables extended pattern form |
|
| m |
'.' matches with newlines |
|
| s |
'^' -> '\A', '$' -> '\Z' |
|
| p |
Same as both the m and s options |
|
| l |
Finds longest matches |
|
| n |
Ignores empty matches |
|
| e |
eval() resulting code |
Deprecated as of PHP 7.1.0 and removed as of PHP 8.0.0 |
注意:
The "e" option has no effect when set through mb_regex_set_options().
Use it with mb_ereg_replace() or mb_eregi_replace().
Regex syntax modes (only one may be set)
| 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.
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
