How to change value of a request parameter in laravel

Use merge():

$request->merge([
    'user_id' => $modified_user_id_here,
]);

Simple! No need to transfer the entire $request->all() to another variable.

Read more about Laravel's merge() here:

https://laravel.com/docs/collections#method-merge

Try to:

$requestData = $request->all();
$requestData['img'] = $img;

Another way to do it:

$request->merge(['img' => $img]);

Thanks to @JoelHinz for this.

If you want to add or overwrite nested data:

$data['some']['thing'] = 'value';
$request->merge($data);

If you do not inject Request $request object, you can use the global request() helper or \Request:: facade instead of $request

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