Laravel Check Collection Has Key在Laravel 中,我们可以使用 Collection 类来操作数组和集合。有时候,我们需要检查 Collection 是否包含某个键,这时就可以使用 has() 方法。语法$collection->has($key); 复制 参数$key:要检查的键。返回值如果Collection 包含指定的键,则返回 true。 如果Collection 不包含指定的键...
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