大约有 17,000 项符合查询结果(耗时:0.0221秒) [XML]

https://stackoverflow.com/ques... 

Remove a string from the beginning of a string

... want, where you can limit your replace to part of your string: http://nl3.php.net/manual/en/function.substr-replace.php (This will enable you to only look at the beginning of the string.) You could use the count parameter of str_replace ( http://nl3.php.net/manual/en/function.str-replace.php ), th...
https://stackoverflow.com/ques... 

Best way to test for a variable's existence in PHP; isset() is clearly broken

...f isset(). Since this is takes the array to check as a function argument, PHP will still raise "notices" if the array itself doesn't exist. In some cases, it can validly be argued that each dimension should have been initialised first, so the notice is doing its job. For other cases, a "recursive" ...
https://stackoverflow.com/ques... 

How to convert an array into an object using stdClass() [duplicate]

...ct->$key = $value; } return $object; } or in full code: <?php function convertToObject($array) { $object = new stdClass(); foreach ($array as $key => $value) { if (is_array($value)) { $value = convertToObject($value); } ...
https://www.tsingfun.com/it/cpp/2060.html 

deque iterator not dereferencable 问题 - C/C++ - 清泛网 - 专注C/C++及内核技术

deque iterator not dereferencable 问题STL里面出现这个问题,纠结了半天,不知道什么原因。当然deque iterator not dereferencable。这个是deque出问题,vector、list也可以出...STL里面出现这个问题,纠结了半天,不知道什么原因。 当然deque iterat...
https://bbs.tsingfun.com/thread-1852-1-1.html 

怎么解决MQTT连接掉线,自动连接问题,同时解决,反复断开连接,断开连接问...

解决MQTT退出后台后掉线自动连接问题,现在可以实现自动连接,但是在返回控制界面的时候,反复断开反复链接,还有切换页面的时候返回也是同样的问题,还有连接一个服务器,需要每个页面单独设置MQTT连接吗,是不是可以...
https://stackoverflow.com/ques... 

How to find out if you're using HTTPS without $_SERVER['HTTPS']

...RVER['SERVER_PORT'] == 443; } The code is compatible with IIS. From the PHP.net documentation and user comments : 1) Set to a non-empty value if the script was queried through the HTTPS protocol. 2) Note that when using ISAPI with IIS, the value will be "off" if the request was not made ...
https://stackoverflow.com/ques... 

Static class initializer in PHP

... // file Foo.php class Foo { static function init() { /* ... */ } } Foo::init(); This way, the initialization happens when the class file is included. You can make sure this only happens when necessary (and only once) by using autolo...
https://stackoverflow.com/ques... 

How to call a JavaScript function from PHP?

How to call a JavaScript function from PHP? 10 Answers 10 ...
https://www.tsingfun.com/it/tech/738.html 

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...
https://stackoverflow.com/ques... 

How can I detect if the user is on localhost in PHP?

...y web application is on the server it resides on? If I remember correctly, PHPMyAdmin does something like this for security reasons. ...