PHP - count specific array values

Question

How can I count the number of element inside an array with value equals a constant? example,

$myArray = array(\"Kyle\",\"Ben\",\"Sue\",\"Phil\",\"Ben\",\"Mar         


        

Answer 1

try the array_count_values() function

<?php
$array = array(1, "hello", 1, "world", "hello");
print_r(array_count_values($array));
?>

output:

Array
(
    [1] => 2
    [hello] => 2
    [world] => 1
)

http://php.net/manual/en/function.array-count-values.php

Answer 2

You can do this with array_keys and count.

$array = array("blue", "red", "green", "blue", "blue");
echo count(array_keys($array, "blue"));

Output:

3

Answer 3

In my case of two dimensional array, from PHP Official Page comments, I found the useful snippet for a two dimensional array-

<?php

$list = [
  ['id' => 1, 'userId' => 5],
  ['id' => 2, 'userId' => 5],
  ['id' => 3, 'userId' => 6],
];
$userId = 5;

echo array_count_values(array_column($list, 'userId'))[$userId]; // outputs: 2
?>

Answer 4

If you want to count ALL the same occurences inside the array, here's a function to count them all, and return the results as a multi-dimensional array:

function countSame($array) {

$count = count($array);
$storeArray = array();
while ($count > 0) {
$count--;

if ($array[$count]) {
$a = $array[$count];
$counts = array_count_values($array);
$counts = $counts[$a];
$tempArray = array($a, $counts);
array_push($storeArray, $tempArray);

$keys = array_keys($array, $a);
foreach ($keys as $k) {
unset($array[$k]);
} //end of foreach ($keys as $k)
} //end of if ($array[$count])

} //end of while ($count > 0)

return $storeArray;

} //end of function countSame($array)

Answer 5

Try the PHP function array_count_values.

Answer 6

Use the array_count_values function.

$countValues = array_count_values($myArray);

echo $countValues["Ben"];