How to count the number of array elements in PHP_PHP Tutorial

How to count the number of array elements in php

This article mainly introduces the relevant information on the method of counting the number of array elements in php. Friends who need it can refer to it

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

Sizeof(): has the same purpose as count(). Both functions can return the number of array elements. You can get the number of elements in a regular scalar variable. If the array passed to this function is an empty Array, or a variable that has not been set, the number of array elements returned is 0;

Array_count_value(): Counts the number of times each specific value appears in the array $array;

For example:

　?

　1

　2$array=array(4,5,1,2,3,1,2,1);

　$ac=array_count_value($array);

An array named $ac will be created, which includes:

　?

　1

　2

　3

　4

　5

　6

7

　8

　9

　10

　11 Keyword Value

　4 1

　5 1

　1 3

　2 2

　3 1

It’s also very good to post a netizen’s idea

　?

　1

　2

　3

　4

　5

　6

7

　8

　9

　10

　11

　12

　13

　14$arr = array(

　'1011,1003,1008,1001,1000,1004,1012',

　1009',

　'1011,1003,1111'

　);

　$result = array();

foreach ($arr as $str) {

　$str_arr = explode(',', $str);

foreach ($str_arr as $v) {

　$result[$v] = isset($result[$v]) ? $result[$v] : 0;

　$result[$v] = $result[$v] 1;

　}

　}

print_r($result);

The above is the entire content of this article, I hope you all like it.

http://www.bkjia.com/PHPjc/1025898.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1025898.htmlTechArticleHow to count the number of array elements in php. This article mainly introduces the method of counting the number of array elements in php. For information, friends who need it can refer to count(): the number of elements in the array...