Delete repeated values in the array. php code _ PHP Tutorial

Delete the php code of repeated values in the array. When $ intTotal is relatively small, for example, the value of $ intRand within 1000 basically does not affect the result, and the execution time of both is similar. When the value of $ intTotal is greater than 10000, the value of $ intRand is smaller than $ intTotal. for example, if the value of $ intRand is less than 1000, the result is basically not affected, and the execution time of both is similar.

When the value of $ intTotal is greater than 10000 and $ intRand is set to 100, the efficiency of using array_unique is higher than that of foreach loop judgment. $ intRand = 10, the execution time of the two is the same.

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