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laravel validator 怎么验证可能存在的参数下的值是否存在

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laravel validator 怎么验证可能存在的参数下的值是否存在

laravel
validator验证

1.比如有一个参数可能存在也可能不存在
如果这个参数存在的话，
其下边包含的是一个数组
我该怎么验证这个数组里边的值


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by (71.8m points)

参数设置成非必须，利用自定义验证来验证数组里面的值


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