Counting occurrence of specific value in an Array with PHP [duplicate]

Question

I am trying to find a native PHP function that will allow me to count the number of occurrences of a particular value in an array. I am familiar with the array_count_values() function, but that returns the count of all values in an array. Is there a function that allows you to pass the value and just return the instance count for that particular value? For example:

$array = array(1, 2, 3, 3, 3, 4, 4, 5, 6, 6, 6, 6, 7);  $instances = some_native_function(6, $array);  //$instances will be equal to 4 

I know how to create my own function, but why re-invent the wheel?

Answer 1

function array_count_values_of($value, $array) {     $counts = array_count_values($array);     return $counts[$value]; } 

Not native, but come on, it's simple enough. ;-)

Alternatively:

echo count(array_filter($array, function ($n) { return $n == 6; })); 

Or:

echo array_reduce($array, function ($v, $n) { return $v + ($n == 6); }, 0); 

Or:

echo count(array_keys($array, 6)); 

Answer 2

This solution may be near to your requirement

$array = array(1, 2, 3, 3, 3, 4, 4, 5, 6, 6, 6, 6, 7); print_r(array_count_values($array));  Result:  Array ( [1] => 1 ,[2] => 1 , [3] => 3, [4] => 2,[5] =>1, [6] => 4, [7] => 1 ) 

for details.