如何计算数组值的重现次数

Question

I want to count the recurrence of a true or false and output which has the most. Is there a predefined function to do this in PHP? So far I have done it like this (isHappy() method):

class Girl {
    private $issues = [];
    public function addIssue($details) {
        this->issues[] = [$details, false];
        return;
    }
    public function isHappy() {
        $true = [];
        $false = [];
        foreach($this->issues as $issue) {
            if($issue[1]) { $true[] = true; } else { $false[] = false; }
        }
        // what if its == to one another? do we return happy or sad?
        return count($true) < count($false) ? false : true;
    }
    public function resolveIssue() {
        for($i = 0; $i <= count($this->issues); $i++) {
            if(!$this->issues[$i][1]) {
                 $this->issues[$i][1] = true;
                 break;
            }
        }
        return;
    }
}

So when I run it, I can get the average of if she is happy or not:

$her = new Girl();

$her->addIssue('Deleted our messages');
$her->addIssue('Over reacted');
$her->addIssue('Told her family to pretty much **** off');

echo $her->isHappy() ? 'it is all ok:)' : 'she hates u, hang urself.';

P.S: It should probably return false every time cos you can't win.

Answer 1

You want array_count_values:

function isHappy(array $issues) {
    $happiness = array_count_values(array_map('intval', $issues));
    return $happiness[1] > $happiness[0];
}
print_r(
    isHappy([ true, false, true, true, false ])
);

See it live on 3v4l.org.

Note that array_count_values only works on string and int, so I'm mapping the given boolean to int for processing.