(PHP 4, PHP 5, PHP 7)
count — Count all elements in an array, or something in an object
int count ( mixed $array_or_countable [, int $mode = COUNT_NORMAL ] )
Counts all elements in an array, or something in an object.
For objects, if you have SPL installed, you can hook into count() by implementing interface Countable. The interface has exactly one method, 登录查看完整内容
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