大约有 40,000 项符合查询结果（耗时：0.0392秒） [XML]
驯服Linux OOM Killer（优质英文资料翻译） - 操作系统(内核) - 清泛网 - ...
...
艾伦·考克斯不喜欢这个解决方案，这表明该容器是控制问题的最适当方式。为了响应这个建议，由 Nikanth Karthikesan 贡献的oom_killer 控制器提供了在系统内存不足时要杀死的进程序列的控制。该补丁引入了一个带有oom.priority字段...
“Cannot send session cache limiter - headers already sent” [duplicate]
...
"Headers already sent" means that your PHP script already sent the HTTP headers, and as such it can't make modifications to them now.
Check that you don't send ANY content before calling session_start. Better yet, just make session_start the first thing you do in...
How to convert an image to base64 encoding?
...ts("/path/to/image.jpg");
// alternatively specify an URL, if PHP settings allow
$base64 = base64_encode($imagedata);
bear in mind that this will enlarge the data by 33%, and you'll have problems with files whose size exceed your memory_limit.
...
What browsers support HTML5 WebSocket API?
...
XSockets.NET
SuperWebSocket
Nugget
Alchemy-Websockets
Fleck
SignalR
In PHP:
Ratchet
phpwebsocket.
Extendible Web Socket Server
phpdaemon
In Python:
pywebsockets
websockify
gevent-websocket, gevent-socketio and flask-sockets based on the former
Autobahn
Tornado
In C:
libwebsockets
In ...
How do I use the ternary operator ( ? : ) in PHP as a shorthand for “if / else”?
...
PHP 7+
As of PHP 7, this task can be performed simply by using the Null coalescing operator like this :
echo !empty($address['street2']) ?? 'Empty';
...
Get current URL with jQuery?
...
http://www.refulz.com:8082/index.php#tab2?foo=789
Property Result
------------------------------------------
host www.refulz.com:8082
hostname www.refulz.com
port 8082
protocol http:
pathname index.php
href http://www.refulz...
Get the Query Executed in Laravel 3/4
...equires that you enable the profiler option in application/config/database.php. Alternatively you could, as @dualed mentioned, enable the profiler option, in application/config/application.php or call DB::profile() to get all queries ran in the current request and their execution time.
...
Find out HTTP method in PHP [duplicate]
...e superglobals alternatives (Is using superglobals directly good or bad in PHP? and similar questions), one may instead use automatic sanitizing
filter_input( \INPUT_SERVER, 'REQUEST_METHOD', \FILTER_SANITIZE_SPECIAL_CHARS )
(you might of course use other filter, eg. FILTER_SANITIZE_STRING - see ...
PHP的函数前加上“@”的作用 - PHP - 清泛IT论坛，有思想、有深度
@是PHP提供的错误信息屏蔽的专用符号。
比如在一个函数前使用@
@mysql_query 不会出现Warning，
而原来mysql_query 在遇到错误时会在页面上访提示Warning。
php安装gd库扩展（无需源码安装） - 更多技术 - 清泛网 - 专注C/C++及内核技术
php安装gd库扩展（无需源码安装）php_gd_installgd是php图片处理库，网上各种源码安装，非常复杂，其实很简单，无需源码编译。apt install php-gd重启apache生效：systemctl restart apache2gd是php图片处理库，网上各种源码安装，非常复杂，其...