Question

所以我有一个数组，有点像：

$concat=array("DARK HORSE,KATY PERRY", "DARK HORSE,KATY PERRY", "WHEN IT RAINS,PARAMORE", "LITHIUM,NIRVANA")
//$concat = song and artist together separated by a comma

我需要输出最多出现的值，所以在上面的数组中我需要输出字符串=“DARK HORSE，KATY PERRY”

谢谢你：）

Answer 1

echo key(array_count_values($concat));

Answer 2

您可以使用array_count_values和array_keys输出结果：

$concat=array("DARK HORSE,KATY PERRY", "DARK HORSE,KATY PERRY", "WHEN IT RAINS,PARAMORE", "LITHIUM,NIRVANA");
//counts frequencies
$count_array = array_count_values($concat);

//gets the keys instead of the values
$count_keys = array_keys($count_array);

//echoes only the first key
echo current($count_keys);

//Or print all values and keys
print_r($count_array);

Answer 3

您可以使用array_count_values来获取一个数组，其中实例为键，频率为值。然后你需要将数组从高到低排序，保持索引（arsort），这很重要。

所以：

//your array
$concat=array("DARK HORSE,KATY PERRY", "DARK HORSE,KATY PERRY", "WHEN IT RAINS,PARAMORE", "LITHIUM,NIRVANA")

//get all the frequencies
$frequencies = array_count_values($concat);

//make sure to sort it since array_count_values doesn't return a sorted array
arsort($frequencies);

//reset the array because you can't trust keys to get the first element by itself
reset($frequencies);

//get the first key
echo key($frequencies);

在PHP中输出最重复的值

3 个答案: