如果我的HTML说明了以下内容
<div class="container">
<div class="element">
</div>
<div class="element">
</div>
[...]
<div class="element">
</div>
</div>
Run Code Online (Sandbox Code Playgroud)
然后可以将这些元素对齐,就像它们在两列表格中一样吗?即7个元素,将有4行,最后一行只有一个元素.
(元素本身没有特殊的类或id,如右,左等).
如果我创建到两台服务器的两个并行连接:
$gw03 = new mysqli('gw03.example', 'user', 'pass', 'db');
$gw04 = new mysqli('gw04.example', 'user', 'pass', 'db');
if (!$gw03->connect_errno) {
...
} else if (!$gw04->connect_errno) {
...
} else {
echo "Failed to connect to gw03: (" . $gw03->connect_errno . ") " . $gw03->connect_error . PHP_EOL;
echo "Failed to connect to gw04: (" . $gw04->connect_errno . ") " . $gw04->connect_error . PHP_EOL;
}
Run Code Online (Sandbox Code Playgroud)
如果 gw03 可用但 gw04 不可用,则结果如下
Failed to connect to gw03: (2002) No route to host
Failed to connect to …Run Code Online (Sandbox Code Playgroud)