How to use Regular Expression Constraints Route in Laravel 5.7
Basic Limitations of Speech Route use system where. The where method accepts the parameter name and a regular expression that determines the validity of the parameter.
Let see in below example.
Route::get('user/{name}', function ($name) {
//
})->where('name', '[A-Za-z]+');
Route::get('user/{user_id}', function ($user_id) {
//
})->where('user_id', '[0-9]+');
Route::get('user/{user_id}/{name}', function ($user_id, $name) {
//
})->where(['user_id' => '[0-9]+', 'name' => '[a-z]+']);
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