count the elements in array except of specific element

Question

For example i have an array like this [-1,-1,-1,-1,-1,-1,2.5,-1,-1,8.3] I want to count the element which are not -1 like except of the -1. Is there any function in php to get this ? One approach which i think is

Count the total array - count of the -1 in the array.

how can we achieve this.

P.S : please provide me a comment why this question deserve negative vote.

Use count() with array_filter(); or use an array_count_values() to count the -1 values — Mark Baker
– Mark Baker, Commented Nov 3, 2017 at 13:37
How direct do you want? count() with array_filter() is just two function calls that can be nested $result = count(array_filter($myArray), function($value) { return $value != -1; });.... sorry that PHP doesn't provide a countExcludingValuesOfMinusOne() function so that you can make it a single function call — Mark Baker
– Mark Baker, Commented Nov 3, 2017 at 13:41
yeah i understand but php provides like a in_array function so thats why. i think there is a function for that also — fat_potato
– fat_potato, Commented Nov 3, 2017 at 13:45
Yes, in_array() would tell you if a value of -1 exists in the array.... it doesn't count them for you — Mark Baker
– Mark Baker, Commented Nov 3, 2017 at 14:01

Ethan · Accepted Answer · 2017-11-03 13:51:01Z

1

Like @MarkBaker said, PHP doesn't have a convenient function for every single problem, however, you could make one yourself like this:

$arr = [-1,-1,-1,-1,-1,-1,2.5,-1,-1,8.3];

function countExcludingValuesOfNegativeOne ($arr) {
    return count($arr) - array_count_values(array_map('strval', $arr))['-1'];
}

echo countExcludingValuesOfNegativeOne($arr); // Outputs `2`.

It just counts the whole array, then subtracts the number of negative 1s in the array. Because PHP throws an error if any element in the array isn't a string ¹ when using array_count_values, I've just converted all elements of the array to a string using array_map('strval', $arr) ²

answered Nov 3, 2017 at 13:51

Ethan

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Comments

Yonas Kassa · Accepted Answer · 2017-11-03 13:42:45Z

0

you can use a for loop counter skipping for a specific number.

function skip_counter($array,$skip){
    $counter = 0;
    foreach ($array as $value) {
        if ($value != $skip) $counter++;
    }
return $counter;
}

then you call skip_counter($your_list, $number_to_be_skipped);

answered Nov 3, 2017 at 13:42

Yonas Kassa

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