Laravel change input value

You can use Input::merge() to replace single items.

Input::merge(['inputname' => 'new value']);

Or use Input::replace() to replace the entire input array.

Input::replace(['inputname' => 'new value']);

Here's a link to the documentation

If you're looking to do this in Laravel 5, you can use the merge() method from the Request class:

class SomeController extends Controller{    public function someAction( Request $request ) {        // Split a bunch of email addresses        // submitted from a textarea form input        // into an array, and replace the input email        // with this array, instead of the original string.        if ( !empty( $request->input( 'emails' ) ) ) {            $emails = $request->input( 'emails' );            $emails = preg_replace( '/\s+/m', ',', $emails );            $emails = explode( ',', $emails );            // THIS IS KEY!            // Replacing the old input string with            // with an array of emails.            $request->merge( array( 'emails' => $emails ) );        }        // Some default validation rules.        $rules = array();        // Create validator object.        $validator = Validator::make( $request->all(), $rules );        // Validation rules for each email in the array.        $validator->each( 'emails', ['required', 'email', 'min: 6', 'max: 254'] );        if ( $validator->fails() ) {            return back()->withErrors($validator)->withInput();        } else {            // Input validated successfully, proceed further.        }    }}

If you mean you want to overwrite input data, you can try doing:

Input::merge(array('somedata' => 'SomeNewData'));