How to print out an array within an array?

<code>    <?php
  $ar=array(array(5,'x'),'q',5);
  echo implode($ar);
    ?></code>

Like the above code, how to print the contents of array(5,'x')?

Reply content:

<code>    <?php
  $ar=array(array(5,'x'),'q',5);
  echo implode($ar);
    ?></code>

Like the above code, how to print the contents of array(5,'x')?

foreach($ar as $v){

<code>    if(is_array($v)){ //如果值是一个数组
        foreach($v as $vv){
            echo $vv."<br>";
        }
    }else{ //不是数组直接打印
        echo $v."<br>";
    }
}</code>

!!!
var_dump Don’t you know?