How to output the number of array elements in php

In PHP, to output the number of array elements, you can use PHP's built-in function count(). This function can return the number of elements in the array. Here is the sample code:

<?php // 声明一个数组
$fruits = array("apple", "banana", "cherry");

// 输出数组元素的个数
echo count($fruits);
?>

In the above code, we first declare an array containing three fruits. Then, we used the count() function to get the number of elements in the array. Finally, we use the echo() function to print the number of elements in the array to the screen.

The output result is:

3

If you want to output the number of elements of the associative array, you can also use the count() function. The sample code is as follows:

<?php // 声明一个关联数组
$user = array(
    "username" => "johndoe",
    "email" => "johndoe@example.com",
    "phone" => "1234567890"
);

// 输出关联数组的元素个数
echo count($user);
?>

In the above code, we declare an associative array that contains the user's username, email and phone number. Then, we use the count() function to get the number of elements in the array. Finally, we use the echo() function to print the number of elements in the array to the screen.

The output result is:

3

In summary, if you want to output the number of array elements, you only need to use PHP's built-in function count().

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