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));

?>