Tip: PHP also supports regular expressions using a Perl-compatible syntax using the PCRE functions. Those functions support non-greedy matching, assertions, conditional subpatterns, and a number of other features not supported by the POSIX-extended regular expression syntax.
Waarschuwing |
These regular expression functions are not binary-safe. The PCRE functions are. |
Regular expressions are used for complex string manipulation. PHP uses the POSIX extended regular expressions as defined by POSIX 1003.2. For a full description of POSIX regular expressions see the regex man pages included in the regex directory in the PHP distribution. It's in manpage format, so you'll want to do something along the lines of man /usr/local/src/regex/regex.7 in order to read it.
Deze functies zijn beschikbaar als onderdeel van de standaard module die altijd beschikbaar is.
Waarschuwing |
Do not change the TYPE unless you know what you are doing. |
To enable regexp support configure PHP
--with-regex[=TYPE]
. TYPE can be one of
system, apache, php. The default is to use php.
Deze functies worden automatisch ingebouwd in de windows versie van PHP. Er zijn geen extra handelingen nodig om deze functies te gebruiken.
Deze extensie gebruikt geen configuratie regels.
Deze extensie maakt geen gebruik van resources.
Deze extensie definieert geen constanten.
For regular expressions in Perl-compatible syntax have a look at the PCRE functions. The simpler shell style wildcard pattern matching is provided by fnmatch().