如何计算PHP数组中的所有元素（） _计算数组元素

为了计算数组中的所有元素, PHP提供了count()和sizeof()函数。 count()和sizeof()这两个函数都用于对数组中的所有元素进行计数, 并为已用空数组初始化的变量返回0。这些是PHP的内置函数。我们可以使用count()或sizeof()函数来计算数组中存在的元素总数。
【如何计算PHP数组中的所有元素（）】例如
我们将使用count()和sizeof()方法讨论所有数组元素的程序实现。
示例1：使用count()进行计数

< ?php $ele = array("Ryan", "Ahana", "Ritvik", "Amaya"); $no_of_ele = count($ele); echo "Number of elements present in the array: ".$no_of_ele; ?>

输出

Number of elements present in the array: 4

例子2

< ?php $ele = array(14, 89, 26, 90, 36, 48, 67, 75); $no_of_ele = sizeof($ele); echo " Number of elements present in the array: ".$no_of_ele; ?>

输出

Number of elements present in the array: 8

示例3：使用sizeof()进行计数

< ?php $ele = array("Jan", "Feb", "Mar", "Apr", "May", "Jun"); $no_of_ele = sizeof($ele); echo " Number of elements present in the array: ".$no_of_ele; ?>

输出

Number of elements present in the array: 6

例子4

< ?php $ele = array(14, 89, 26, 90, 36, 48, 67); $no_of_ele = sizeof($ele); echo " Number of elements present in the array: ".$no_of_ele; ?>

输出

Number of elements present in the array: 7

示例5：使用2D数组的示例

< ?php $snacks = array('drinks' => array('cold coffee', 'traffic jam', 'Espresso', 'Americano'), 'bevrage' => array('spring rolls', 'nuddles')); echo count($snacks, 1); echo "< /br> "; echo sizeof($snacks, 1); ?>

输出