How to display the total number of arrays in php

In PHP, to display the total number of an array, you can use the count() function. This article will introduce how to use this function to display the total number of arrays.

First, we need to create an array. You can create a simple array in the following way:

$my_array = array("apple", "orange", "banana", "pear");

This array contains 4 elements. Now we use the count() function to get the total number of the array:

echo count($my_array);

The above code will output: 4

# The ##count() function will return the total number of elements of the array, and then we pass this value as a parameter to the echo function to output the result to the screen.

In addition, in PHP we can also use the

sizeof() function to achieve the same effect. For example:

echo sizeof($my_array);

The output result of the above code is also

4.

It should be noted that the

count() and sizeof() functions cannot be used for non-array type objects, because these functions only accept array type parameters. If we use these two functions to handle non-array type objects, a warning message will appear.

When dealing with large arrays, considering performance, it is best to use the

sizeof() function because it is slightly faster than the count() function.

In summary, displaying the total number of PHP arrays is very simple, we only need to use the

count() or sizeof() function. These two functions return an integer value, which can be easily used to determine whether the array is empty, and to obtain information such as the number of elements in the array.

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