Laravel 8 whenNotEmpty() {#collection-method}

2021-07-19 09:52 更新

whenNotEmpty 方法當(dāng)集合不為空時(shí)，將執(zhí)行給定的回調(diào)函數(shù)：

$collection = collect(['michael', 'tom']);

$collection->whenNotEmpty(function ($collection) {
    return $collection->push('adam');
});

$collection->all();

// ['michael', 'tom', 'adam']


$collection = collect();

$collection->whenNotEmpty(function ($collection) {
    return $collection->push('adam');
});

$collection->all();

// []


$collection = collect();

$collection->whenNotEmpty(function ($collection) {
    return $collection->push('adam');
}, function ($collection) {
    return $collection->push('taylor');
});

$collection->all();

// ['taylor']

與 whenNotEmpty 相反的方法，請(qǐng)查看 whenEmpty 方法。

以上內(nèi)容是否對(duì)您有幫助：

← Laravel 8 whenEmpty() {#collection-method}

Laravel 8 where() {#collection-method} →

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Laravel 8 whenNotEmpty() {#collection-method}

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