php统计数组元素个数,php数组个数_PHP教程

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php统计数组元素个数,php数组个数

count():对数组中的元素个数进行统计;

sizeof():和count()具有同样的用途,这两个函数都可以返回数组元素个数.可以得到一个常规标量变量中的元素个数,如果传递给这个函数的数组是一个空数组,或者是一个没有经过设定的变量,返回的数组元素个数就是0;

array_count_value():统计每个特定的值在数组$array中出现过的次数;

如:

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

$ac=array_count_value($array);

将创建一个名为$ac数组,该数组包括:



关键字 值

4 1

5 1

1 3

2 2

3 1


文章源地址:http://www.cnblogs.com/taletao/archive/2012/04/26/2471338.html

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