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Is there anyway to count how many keys an array has in Php ...
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日期：2026-04-19
Array ( [0] => 'hello' [1] => 'there' [2] => [3] => [4] => 3 ) // how to get the ... count $
arr = Array ( 0 => 'hello', 1 => 'there', 2 => null, 3 => null, 4 => 3, ......看更多
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