Php method for getting the array length or number of occurrences of a value, PHP array _php tutorial

PHP gets the array length or the number of occurrences of a value, the PHP array

This example describes how PHP gets the array length or the number of occurrences of a value. Share to everyone 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 of which can return the number of array elements. You can get the number of elements in a regular scalar variable, if the array passed to the function is an empty array, or is an array of variables that are not set, the number of elements returned is 0;

Array_count_value () counts the number of occurrences of each particular value 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 is created, which includes:

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

I hope this article is helpful to everyone's PHP programming.

http://www.bkjia.com/PHPjc/957134.html www.bkjia.com true http://www.bkjia.com/PHPjc/957134.html techarticle PHP Gets the array length or the number of occurrences of a value, and the PHP array describes how PHP gets the length of an array or the number of occurrences of a value. Share to everyone for your reference. Specific ...

