PHP to obtain the length of an array or the number of occurrences of a value, php _ PHP Tutorial

PHP array used to obtain the length of an array or the number of occurrences of a value. PHP is used to obtain the length of an array or the number of occurrences of a value. This article describes how php obtains the length of an array or the number of occurrences of a value. Share it with you for your reference. PHP array is used to obtain the length of an array or the number of occurrences of a value.

This example describes how to obtain the length of an array or the number of occurrences of a value in PHP. Share it with you for your reference. The specific analysis is as follows:

Count (): counts the number of elements in the array;

For example:

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

Sizeof () and count () have the same purpose. both functions can return the number of array elements. we can get the number of elements in a regular scalar variable. If the array passed to this function is an empty array or an unspecified variable, the number of returned array elements is 0;

Array_count_value () counts the number of times each specific value has exceeded in the array $ array;
For example:

$array=array(4,5,1,2,3,1,2,1);$ac=array_count_value($array);

An array named $ ac will be created, including:

Keyword value
4 1
5 1
1 3
2 2
3 1

I hope this article will help you with php programming.

Examples in this article describes how PHP obtains the length of an array or the number of occurrences of a value. Share it with you for your reference. Details...