How to add elements to a PHP array which is more efficient

At present, we can see that there are two ways to use more, namely

$arr = Array ();//First Array_push ($arr, ' test ');//second $arr[] = ' test ';

Which of these two methods is more efficient?

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At present, we can see that there are two ways to use more, namely

$arr = Array ();//First Array_push ($arr, ' test ');//second $arr[] = ' test ';

Which of these two methods is more efficient?

This is already stated in the official PHP document "If you use Array_push () to add a unit to an array, you might as well use $array [] =, because there is no additional burden of calling the function. 】
Http://php.net/manual/zh/function.arr ...

The first floor was a good answer to that question.

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