这样就算会了PHP么？-5

<?php
    $str = "时装，休闲，职业装";
    $strs = explode("，", $str);
    print_r($strs);
    $str = array(明日,编程词典,网址,'www.mrbccd.com',服务电话,"0431-84972266");
    echo "<br>";
    echo implode(" ",$str);
    echo "<br>";
    $str = array(明日,编程词典,网址,'www.mrbccd.com',服务电话,"0431-84972266");
    echo count($str);
    echo "<br>";    
    echo array_search('www.mrbccd.com', $str);
    echo "<br>";
    echo "弹出的最后一个单元是:".array_pop($str);
    echo "<br>";
    array_push($str, "服务电话");
    print_r($str);
    echo "<br>";
    print_r(array_unique($str));
    
?>