How can you efficiently count the number of arrays that have a specific value in PHP?

To efficiently count the number of arrays that have a specific value in PHP, you can use a loop to iterate through each array and check if the specific value exists in the array. If the value is found, increment a counter variable. Finally, return the count of arrays that contain the specific value. 

function countArraysWithValue($arrays, $value) {
    $count = 0;
    
    foreach ($arrays as $array) {
        if (in_array($value, $array)) {
            $count++;
        }
    }
    
    return $count;
}

$arrays = [[1, 2, 3], [4, 5, 6], [7, 8, 9]];
$value = 5;

echo countArraysWithValue($arrays, $value); // Output: 1

Keywords

PHP arrays count specific value efficiency

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