Online PHP editor | refs for 0N4bs

<?php $routes = [ '/path/(\d+)/new/upload$', '/path/selectable_ajax_placements/(\w+)/(\d+)', '/path/anotherpath/to/(\d+)/from/([\d\-\_]+)/to/([\d\-\_]+)$', '/path/list$', ]; foreach ($routes as $route) { echo preg_replace_callback('#(?<=/)([^/]*?[^/a-z0-9_\-][^/]*)(?=/|$)#i', function($match) { return preg_match('#^[a-z0-9_\-]+\$$#i', $match[1]) ? substr($match[1], 0, -1) : '1'; }, $route), "\n"; }