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I have this function or the user will add a 'tarificationtaches' to the 'technicien' each 'technicien' have a single 'tarificationtaches'for a selected 'tache' I wanted to make a select to check if the 'technician_id' and the 'tache_id' already exist in the pricing table stain but I have this error

(""Call to undefined function App\Http\Controllers\technicien()")

this is my function

  public function store(Request $request)
{

    $tarification = new tarificationtache();
    $tarification ->tache_id = $request->input('tache_id');
    $tarification ->Tarif =$request->input('Tarif');
    $tarification->technicien_id = $request->input('technicien_id');
    $tarification = DB::select("select * FROM tarificationtaches where 
    technicien_id = 'technicien_id' and tache_id = input('tache_id')");

        if(request($tarification) > 1)
         echo "Ce technicien a cette tarification";
        else{

        $tarification->save();
 }

tabel tarificationtaches

 Schema::create('tarificationtaches', function (Blueprint $table) {
        $table->increments('id');
        $table->float('tarif', 8,2);
        $table->integer('tache_id')->unsigned();
        $table->foreign('tache_id')->references('id')->on('taches');
        $table->integer('technicien_id')->unsigned();
        $table->foreign('technicien_id')->references('id')- 
        >on('techniciens');
        $table->datetime('deleted_at')->nullable();
        $table->timestamps();
    });

via Chebli Mohamed