如何将我的数字串输入数组以获得最常见的数字？ [重复]

Question

This question already has an answer here:

• How can I split a comma delimited string into an array in PHP? 6 answers
• PHP: Most frequent value in array 2 answers

I'm using PHP Codeigniter, and I'm trying to get a string of numbers that are in a single variable to an array where it will produce the most frequent number.

I'm trying to do this but it doesn't seem to work.

$string_of_numbers = "1, 2, 4, 5, 6, 3, 2, 2, 1, 4, 4, 4";    

$numbers = [$string_of_numbers];

But this works

$numbers = [1, 2, 4, 5, 6, 3, 2, 2, 1, 4, 4, 4];

I think I'm supposed to convert those string numbers into an interval, but I'm not sure how.

$strong_of_numbers = "1, 2, 4, 5, 6, 3, 2, 2, 1, 4, 4, 4";
$numbers = [$strong_of_numbers ]; 




$count = array_count_values($numbers); 
// get count of occurrence for each number

arsort($count); 
// sort by occurrence, descending

$first = key($count); 
// get key of first element, because that is the/one

$count_first = current($count); 
// get occurrence for first array value

$count_second = next($count); 
// get occurrence for second array value

if($count_first != $count_second) { 
// did they occur in different frequencies?

    echo $first . ' occurred most in input array.';
        } else {
    echo 'input array contained multiple values with highest occurrence.';
    }

End result is that $numbers should accept the $strong_of_numbers as integers, and show the most common/frequent integer.

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Answer 1

Use explode() to build your array, based on the delimiter ", " :

$string_of_numbers = "1, 2, 4, 5, 6, 3, 2, 2, 1, 4, 4, 4";    

$numbers = explode(", ", $string_of_numbers);

var_dump($numbers);

Output

array (size=12)
  0 => string '1' (length=1)
  1 => string '2' (length=1)
  2 => string '4' (length=1)
  3 => string '5' (length=1)
  4 => string '6' (length=1)
  5 => string '3' (length=1)
  6 => string '2' (length=1)
  7 => string '2' (length=1)
  8 => string '1' (length=1)
  9 => string '4' (length=1)
  10 => string '4' (length=1)
  11 => string '4' (length=1)