How to determine how many values ​​an array has in php

In PHP, you can use the count() function to determine how many values ​​an array has; this function can count the number of elements in the array and return the number of elements. The syntax format is "count(array) ", its parameter array represents the array to be counted. When using it, you only need to pass the array into array.

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

In php, you can use count () function to determine how many values ​​an array has.

$arr = Array('0','1','2','3','4');
echo count($arr); // 输出 5

Output:

5

Description:

count(): Count the number of elements in the array Perform statistics and return the number of elements in the array.

Syntax

count(array,mode);

Parameters	Description
array	Required. Specifies the array to count.
mode	Optional. Specifies the mode of the function. Possible values: 0 - Default. Not counting all elements in a multidimensional array. 1 - Recursively count the number of elements in an array (count all elements in a multidimensional array).

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