php变量中重复项的计数

Question

HELOO ,

I have a PHP Variable like :

$var = 'Mark,John,Julian,Mark,Mark,Julian';

i want count every duplicate name and print them like :

John
Mark (3)
Julian (2)

Answer 1

You can do that like this:

$var = 'Mark,John,Julian,Mark,Mark,Julian';
$array = [];

foreach(explode(',', $var) as $name){
    if(isset($array[trim($name)]))
        $array[trim($name)]++;
    else
        $array[trim($name)] = 1;
}

foreach($array as $name => $count){
    echo $name . ($count > 1 ? ' (' . $count . ')' : '') . '<br />';
}

//prints: 
Mark (3)
John
Julian (2)