Check How Many Times Specific Value in Array PHP

Check how many times specific value in array PHP

Several ways.

$cnt = count(array_filter($uid,function($a) {return $a==12;}));

or

$tmp = array_count_values($uid);
$cnt = $tmp[12];

or any number of other methods.

Count how many times a value appears in this array?

array_column will create an array of all the elements in a specific column of a 2-D array, and array_count_values will count the repetitions of each value in an array.

$newArr = array_count_values(array_column($ids, 'id'));

Count How Many Times a Value Appears Php

array_count_values, enjoy :-)

$array = array(12,43,66,21,56,43,43,78,78,100,43,43,43,21);
//basically we get the same array
foreach ($array as $data) {

  $count[] = $data;
}   
$vals = array_count_values($count);
print_r($vals);

Result:

Array
(
    [12] => 1
    [43] => 6
    [66] => 1
    [21] => 2
    [56] => 1
    [78] => 2
    [100] => 1
)

PHP - count specific array values

$array = array("Kyle","Ben","Sue","Phil","Ben","Mary","Sue","Ben");
$counts = array_count_values($array);
echo $counts['Ben'];

Count how often a particular value appears in an array

PHP has a function called array_count_values for that.

Example:

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

Output:

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

How do I count occurrence of duplicate items in array

array_count_values, enjoy :-)

$array = array(12,43,66,21,56,43,43,78,78,100,43,43,43,21);
$vals = array_count_values($array);
echo 'No. of NON Duplicate Items: '.count($vals).'<br><br>';
print_r($vals);

Result:

No. of NON Duplicate Items: 7
Array
(
    [12] => 1
    [43] => 6
    [66] => 1
    [21] => 2
    [56] => 1
    [78] => 2
    [100] => 1
)

How to count value inside array?

You could make use of a combination of explode, array_map, array_filter and array_count_values to split the values on a comma and keep the ones for which the values are 100.

For example:

$items = [
    1 => [
        "33,55,88,100,66,4",
        "45,45,58,49,49,4",
        "100,100,50,49,80,4"
    ],
    2 => [
        "33,55,88,100,66,4",
        "45,45,58,49,49,4",
        "100,100,50,49,80,4"
    ],
    3 => [
        "33,55,88,100,66,4",
        "45,45,58,49,49,4",
        "100,100,50,49,80,4"
    ],
];

foreach ($items as &$item) {
    $item = array_map(function ($x) {
        $res = array_filter(array_count_values(
            explode(',', $x)
        ), function ($key) {
            return $key === 100;
        }, ARRAY_FILTER_USE_KEY);
        return sprintf("100 (%s) Times", count($res) === 1 ? $res[100] : 0);
    }, $item);
}

print_r($items);

Result

Array
(
    [1] => Array
        (
            [0] => 100 (1) Times
            [1] => 100 (0) Times
            [2] => 100 (2) Times
        )

    [2] => Array
        (
            [0] => 100 (1) Times
            [1] => 100 (0) Times
            [2] => 100 (2) Times
        )

    [3] => Array
        (
            [0] => 100 (1) Times
            [1] => 100 (0) Times
            [2] => 100 (2) Times
        )

)

Php demo

how to get how many times a specific value change in php array

Here in an example-

$count = 0;
$counter = -1;
$arr = array("3", "6", "6", "3", "6", "4", "4");
foreach($arr as $val){
    if($val == 6)
        $counter = 0;

    if($counter == 0 && $val != 6){
        $count++;
        $counter = -1;
    }
}
echo $count;

Count number of values in array with a given value

How about using array_count _values to get an array with everything counted for you?

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