php统计数组元素个数的方法,php统计数组个数
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
发一个网友的思路,也非常不错
$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);
以上所述就是本文的全部内容了,希望大家能够喜欢。

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