4. Parameter Patterns

The patterns defined in PHP-Router are:

• :all => All characters
• :any => All chars without '/' char
• :id => Natural numbers (0, 1, 17, 167, 1881, 20956...)
• :number => Real numbers (1, -1.2, 5.5 ...)
• :float => Real numbers
• :bool => Boolean values. (true, false, 1, 0)
• :string => Alphanumeric characters
• :slug => URL format characters for SEO. (Alphanumeric characters, _ and -)
• :uuid => UUID
• :date => Y-m-d format date string

single pattern

$router->get('/hello/:string', function($value) {
  echo "Hello, {$value}";
});

# Output:
# /hello/burak ---> Hello, burak
# /hello/php ---> Hello, php
# /hello/ ---> Error!!!

multi pattern

$router->get('/post/:id/:slug', function($id, $slug) {
  echo "Post ID: {$id} <br />";
  echo "Post Slug: {$slug}";
});

# Output:
# /post/5/hello-world ---> Post ID: 5 <br />Post Slug: hello-world
# /post/17/php-router ---> Post ID: 17 <br />Post Slug: php-router
# /post/foo/bar ---> Error!!! (:id param must be digits.)

optional pattern - add default value

$router->get('/page/:slug?', function($page = 'home') {
  return "Page: {$page}";
});

# Output:
# /page/contact ---> Page: contact
# /page/about-us ---> Page: about-us
# /page ---> Page: home

custom pattern - create own pattern

$router->pattern(':lowercase', '[a-z]+');

$router->get('/demo/:lowercase', function($value) {
  return "Value: {$value}";
});

# Output:
# /demo/burak ---> Value: burak 
# /demo/php ---> Value: php
# /demo/Router ---> Error!!!

To define multiple patterns at once, you can use this method:

$patterns = [':lowcase' => '[a-z]+', ':upcase' => '[A-Z]+'];

$router->pattern($patterns);

Great! That's it. :)