Quantifiers

Quantifiers specify how many instances of a character, group or character must be present in the subject for a match to be found.

The zeroOrOne method matches the previous token zero or one time.

use Rudashi\Regex;
 
$pattern = Regex::build()->exactly('a')->zeroOrOne();
 
// /a?/

The zeroOrMore method matches the previous token between zero and an unlimited number of times.

use Rudashi\Regex;
 
$pattern = Regex::build()->exactly('a')->zeroOrMore();
 
// /a*/

The oneOrMore method matches the previous token once or an unlimited number of times.

use Rudashi\Regex;
 
$pattern = Regex::build()->exactly('a')->oneOrMore();
 
// /a+/

The times method matches the previous token a specified number of times.

use Rudashi\Regex;
 
$pattern = Regex::build()->exactly('a')->times(1);
 
// /a{1}/

The min method matches the previous token between a specified number to an unlimited number of times.

use Rudashi\Regex;
 
$pattern = Regex::build()->exactly('a')->min(1);
 
// /a{1,}/

The between method matches the previous token between a specified numbers of times.

use Rudashi\Regex;
 
$pattern = Regex::build()->exactly('a')->between(1, 3);
 
// /a{1,3}/

Additionally, if you omit the second argument, the method behaves identically to min.

use Rudashi\Regex;
 
$pattern = Regex::build()->exactly('a')->between(1);
 
// /a{1,}/