[請益] 如何取得多維陣列的陣列個數
例如:
$car = array (
"BMW" => array ("Money" => 200, "Color" => "Black", "Type" => "328i"),
"MAZDA" => array ("Money" => 70, "Color" => "Blue", "Type" => "323"),
"HONDA" => array ("Money" => 40, "Color" => "White", "Type" => "City"),
"VOLVO" => array ("Money" => 100, "Color" => "Pink", "Type" => "s40")
);
要如何知道$car有四個陣列(BMW,MAZDA,HONDA,VOLVO)在內呢
有沒有哪個函式可以算出共有幾個子陣列
或是算出$car陣列擁有幾個陣列元素個數
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