将多数组的“ for”循环转换为“ foreach”循环

Question

这是我的数组：

$applications = array(
    array(
        "title" => "AB",
        "server" => array("Domain")
    ),
    array(
        "title" => "BC",
        "server" => array("Domain", "Admin", "Server 1", "Server 2", "Server 3")
    ),
    array(
        "title" => "DE",
        "server" => array("Domain", "Admin", "Server 1", "Server 2")
    ),
    array(
        "title" => "FG",
        "server" => array("Domain", "Admin", "Server 1", "Server 2", "Server 3")
    ),
);


for ($i=0; $i<count($applications); $i++){
    echo $applications[$i]["title"] . "<br>";
    for ($j=0; $j<count($applications[$i]["server"]); $j++){
        echo $applications[$i]["server"][$j] . "<br>";
    }
    echo "<br>";
}

for循环效果很好。我可以使用foreach循环做同样的事情，因为我发现它看起来更干净吗？如果是这样，我该如何将这个for循环转换为foreach循环？

tks

Answer 1

您可以这样转换：

   foreach ($applications as $app) {
        echo $app["title"]."<br>";
        echo implode("<br>", $app["server"]);
        echo "<br>";
    }

或

componentWillUnmount

查看手册中的Implode。代码变得更加清晰。