PHP用右键填充关联数组

Question

 $niz = array(
        'fruit1' => 'apple',
        'fruit2' => 'orange',
        'fruit3' => 'grape',
        'fruit4' => 'watermelon',
        'fruit5' => 'grapefruit'
        );

    $max = 'yellow';
    $niz2 = array();
    $niz3 = array();

    foreach($niz as $k => $v){

        if (strlen($v) <= strlen($max)) {
            array_push($niz2, $v);  
                } 
        else { 
        $niz3[$niz[$k]]=$v;
            }   
    }   
    print_r($niz3);

How can I get the appropriate key from the $niz array in my $niz3          associative array in the else statement? 

即数组( fruit4 =>西瓜fruit5 =>葡萄橘)

我得到：=> (西瓜，葡萄干，=>，葡萄干)

Answer 1

您需要将$niz3[$niz[$k]]=$v;更改为$niz3[$k]=$v;，

$k是“键”，通过将其钝化到$niz中，您正在访问值，您已经将其定义为$v。