严格的空比较
匿名 · 更新于 2021/6/28
如果您希望您的0值是0Excel 工作表中的实际值而不是null（空单元格），您可以使用WithStrictNullComparison.
namespace App\Exports;
use Maatwebsite</span>Excel</span>Concerns</span>FromCollection;
use Maatwebsite</span>Excel</span>Concerns</span>WithStrictNullComparison;
class InvoicesExport implements FromCollection, WithStrictNullComparison
{
public function __construct(InvoicesRepository $invoices)
{
$this->invoices = $invoices;
}
<span class="token keyword" style="color: rgb(204, 153, 205); font-style: italic !important;">public</span> <span class="token keyword" style="color: rgb(204, 153, 205); font-style: italic !important;">function</span> <span class="token function" style="color: rgb(240, 141, 73);">collection</span><span class="token punctuation" style="color: rgb(204, 204, 204);">(</span><span class="token punctuation" style="color: rgb(204, 204, 204);">)</span>
<span class="token punctuation" style="color: rgb(204, 204, 204);">{</span>
<span class="token keyword" style="color: rgb(204, 153, 205); font-style: italic !important;">return</span> <span class="token variable" style="color: rgb(126, 198, 153);">$this</span><span class="token operator" style="color: rgb(103, 205, 204);">-</span><span class="token operator" style="color: rgb(103, 205, 204);">></span><span class="token property" style="color: rgb(248, 197, 85); font-style: italic !important;">invoices</span><span class="token operator" style="color: rgb(103, 205, 204);">-</span><span class="token operator" style="color: rgb(103, 205, 204);">></span><span class="token function" style="color: rgb(240, 141, 73);">all</span><span class="token punctuation" style="color: rgb(204, 204, 204);">(</span><span class="token punctuation" style="color: rgb(204, 204, 204);">)</span><span class="token punctuation" style="color: rgb(204, 204, 204);">;</span>
<span class="token punctuation" style="color: rgb(204, 204, 204);">}</span>
}
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