Generate Invoice number In larvel to predefined specific format

Hope this video will help you. https://www.youtube.com/watch?v=WxCGsz2Drgg

If you have a database table for your invoices (with a conventional auto-incrementing id), then you can make an accessor on the Invoice model to get the invoice number in the format you prefer.

// Invoice Model
public function getNumberAttribute()
{
	return 'AT' . str_pad($this->id, 6, 0, STR_PAD_LEFT)

}

You can also find the Invoice by number by using a static:

public function findByNumber($number)
{
	$id = intval(\Str::after($number, 'AT'));

	return static::find($id); 
}

Thanks.