# Gridlines

## **Function Prototype**

```php
gridline(int $option = \Vtiful\Kernel\Excel::GRIDLINES_SHOW_ALL): self
```

## Grid line type

```php
const GRIDLINES_HIDE_ALL    = 0; // hide screen grid lines and print grid lines
const GRIDLINES_SHOW_SCREEN = 1; // display screen grid lines
const GRIDLINES_SHOW_PRINT  = 2; // display printing grid lines
const GRIDLINES_SHOW_ALL    = 3; // display screen grid lines and print grid lines
```

## **Example**

```php
$config = ['path' =>'./tests'];
$excel = new \Vtiful\Kernel\Excel($config);

$fileObject = $excel->fileName("tutorial01.xlsx");

$fileObject->header(['name','age'])
    ->gridline(\Vtiful\Kernel\Excel::GRIDLINES_HIDE_ALL) // Set the grid line of the worksheet
    ->data([
        ['viest', 21],
        ['viest', 22],
        ['viest', 23],
    ])
    ->output();
```


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