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Please help me, God, how do I change this PHP code, but it never matches-PHP Chinese website Q&A-Please God, help me, how do I change this PHP code, but it never matches-PHP Chinese website Q&A

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<?php
function checkActivity($actName,$position){
    $isvip=false;
    foreach($actName as $vo){
        if($vo===$position){
            $isvip=true;
            break;
        }
    }
    if($isvip){
        echo'匹配到你在特殊的地理位置里';
    }else{
        echo '你是普通访问者';
    }
}
$activityName = array(
    array('china','beijing','chaoyang'),
    array('china','zhejiang','hangzhou'),
);
checkActivity($activityName,array("china","zhejiang","hangzhou"));

<?php
    function checkActivity($actName,$position) {
         
        $pregmsg = explode('+',$position);
         
        foreach($actName as &$value) {
            for($i=0;$i<3;$i++) {
                if($value[$i]==$pregmsg[$i]) {
                    if($i==0) {
                         $value['ispregco'] = true;
                    }
                    if($i==1) {
                        $value['ispregpr'] = true;
                    }
                    if($i==2) {
                        $value['ispregci'] = true;
                    }
                }
            }
        }
        foreach ($actName as $value2) {
            if($value2['ispregco'] && $value2['ispregpr'] && $value2['ispregci']) {
                echo'匹配到你在特殊的地理位置里';
            }
            else{echo '你是普通访问者';
            }
        }
    }
     // 预先设置好的特殊地理位置
    $activityName = array(
        array('china','beijing','chaoyang'),
        array('china','zhejiang','hangzhou'),
                        // ...可以添加若干地理位置
    );
    // 预先设置好的特殊地理位置
     //访问者的地理位置
       $country="china";
       $province="zhejiang";
       $city="hangzhou";
       $position = str_replace(' ', '', strtolower($country.'+'.$province.'+'.$city));
        //访问者的地理位置 
    checkActivity($activityName,$position);