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
Manual
mb_regex_set_options(
[string|null$options = null] ): string
Sets the default options described by options for multibyte regex functions.
Parameters
- options
-
The options to set. This is a string where each character is an option. To set a mode, the mode character must be the last one set, however there can only be set one mode but multiple options.
Regex options
Option Meaning i Ambiguity match on x Enables extended pattern form m '.' matches with newlines s '^' -> '\A', '$' -> '\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
Return Values
The previous options. If options is omitted or null, it returns the string that describes the current options.
Changelog
| Version | Description |
| 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. |