[Solved] Consider this Laravel route definition:Route::get('/post/{id?}/{comment?}', function ($id = 1, $comment = 'none') { return "$id - $comment"; });What is the error in this code? | Laravel

Laravel - Routing

Consider this Laravel route definition:

Route::get('/post/{id?}/{comment?}', function ($id = 1, $comment = 'none') {
    return "$id - $comment";
});

What is the error in this code?

AFunction parameters must not have default values

BDefault values cannot be strings

COptional parameters must be at the end; $id cannot be optional before $comment

DRoute parameters cannot have question marks

Step-by-Step Solution

Solution:

Step 1: Check order of optional parameters
In Laravel, optional parameters must come after all required ones and be at the end in order.
Step 2: Analyze parameter order
Here, $id is optional before $comment which is also optional, but $id is first. This is allowed only if both are optional and route matches accordingly.
Step 3: Identify route matching issue
Laravel cannot distinguish which parameter is missing if earlier optional parameters are skipped but later ones are present.
Final Answer:
Optional parameters must be at the end; $id cannot be optional before $comment -> Option C
Quick Check:
Optional params order matters [OK]

Quick Trick: Put optional params only at the end [OK]

Common Mistakes:

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