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Laravel 8 merge() {#collection-method}

merge 方法将合并指定的数组或集合到原集合。如果给定的集合项的字符串键与原集合中的字符串键相匹配,则指定集合项的值将覆盖原集合的值:

$collection = collect(['product_id' => 1, 'price' => 100]);

$merged = $collection->merge(['price' => 200, 'discount' => false]);

$merged->all();

// ['product_id' => 1, 'price' => 200, 'discount' => false]

如果给定的集合项为数字,则这些值将会追加在集合的最后:

$collection = collect(['Desk', 'Chair']);

$merged = $collection->merge(['Bookcase', 'Door']);

$merged->all();

// ['Desk', 'Chair', 'Bookcase', 'Door'] 
Laravel 8 median() {#collection-method}
Laravel 8 mergeRecursive() {#collection-method}
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Laravel 8 入门指南

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