Others

Each method described in this section allows for unique manipulation of the pattern.

`capture`

The capture method matches a pattern within a group and remembers the match.

use Rudashi\Regex;
 
$pattern = Regex::build()->capture(
    fn (FluentBuilder $fluent) => $fluent->exactly('.')->letter()
);
 
// /(\.[a-zA-Z])/

Using the lookbehind or lookahead arguments you can control whether to match a subpattern without consuming characters.

use Rudashi\Regex;
 
$pattern = Regex::build()->capture(
    callback: fn (FluentBuilder $fluent) => $fluent->exactly('.')->letter(),
    lookbehind: true,
);
 
// /(?<=\.[a-zA-Z])/

`maybe`

The maybe method matches a pattern within a group zero or one time.

use Rudashi\Regex;
 
$pattern = Regex::build()->maybe(
    fn (FluentBuilder $fluent) => $fluent->exactly('.')->letter()
);
 
// /(\.[a-zA-Z])?/

Alternatively, you can use it to search for individual characters

use Rudashi\Regex;
 
$pattern = Regex::build()->maybe(0);
 
// /(0?)/

`oneOf`

The oneOf method alternatively matches any of the given characters.

use Rudashi\Regex;
 
$pattern = Regex::build()->oneOf('a', 'b', '.');
 
// /a|b|\./

`or`

The or method alternatively matches the pattern before and after using the method.

use Rudashi\Regex;
 
$pattern = Regex::build()->exactly('a')->or()->exactly('b');
 
// /a|b/

Alternatively, you can use the or property, which works identically.

use Rudashi\Regex;
 
$pattern = Regex::build()->exactly('a')->or->exactly('b');
 
// /a|b/

Quantifiers

Patterns