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cleanest way to skip a foreach if array is empty [duplicate]
...t need:
foreach ((array) $items as $item) {
print $item;
}
Note: to all the people complaining about typecast, please note that the OP asked cleanest way to skip a foreach if array is empty (emphasis is mine). A value of true, false, numbers or strings is not considered empty.
In addition, th...
获取文件系统映像及恢复删除的数据（FAT文件系统格式描述） - C/C++ - 清泛...
...据读取完毕后，这个的数据就加载完毕了。这里还有一个问题，程序根据这个FAT表的簇号依次读取每个簇，则程序怎么知道一个簇读取完毕后这个文件就算读取完毕了？一般地，每个一个记录值为下列表中值，则说明已经读到文...
What is the difference between is_a and instanceof?
...ut PHP versions >= 5.3.9 now accept an optional third boolean argument $allow_string (defaults to false) to allow comparisons of string class names instead:
class MyBaseClass {}
class MyExtendingClass extends MyBaseClass {}
// Original behavior, evaluates to false.
is_a(MyExtendingClass::class,...
MySQL (\'root\'@\'%\') does not exist 的问题 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
MySQL ('root'@'%') does not exist 的问题MySQL ('root'@'%') does not exist的问题：在使用mysql时出现问题： The user specified as a definer ('...MySQL ('root'@'%') does not exist的问题：
在使用mysql时出现问题： The user specified as a definer ('root'@'%') does not exist。...
How can I force users to access my page over HTTPS instead of HTTP?
...
The way I've done it before is basically like what you wrote, but doesn't have any hardcoded values:
if($_SERVER["HTTPS"] != "on")
{
header("Location: https://" . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"]);
exit();
}
...
How to destroy an object?
... objects as soon as the page is served. So this should only be needed on really long loops and/or heavy intensive pages.
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Creating PHP class instance with a string
...able functions & methods.
$func = 'my_function';
$func('param1'); // calls my_function('param1');
$method = 'doStuff';
$object = new MyClass();
$object->$method(); // calls the MyClass->doStuff() method.
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What's the maximum value for an int in PHP?
Ignoring the special libraries that allow you to work with very big numbers, what's the largest int value you can store in PHP?
...
TCP 的那些事儿（上） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...些事儿（上）TCP是一个巨复杂的协议，因为他要解决很多问题，而这些问题又带出了很多子问题和阴暗面。所以学习TCP本身是个比较痛苦的过程，但对于学习的...
TCP是一个巨复杂的协议，因为他要解决很多问题，而这些问题又...
How to add facebook share button on my website?
...
You don't need all that code. All you need are the following lines:
<a href="https://www.facebook.com/sharer/sharer.php?u=example.org" target="_blank">
Share on Facebook
</a>
Documentation can be found at https://developers...