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译文：理解Java中的弱引用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。既然它们是一些不知名的概念，我简单就着前面的三个问题来说明一下。
强引用(Strong Reference)
强引用就是我们经常使用的引用，其写法如下
StringBuffer buffer = new StringBuffer();
上面创建了一个StringBuffer对象，并将这个对象的...
Find nearest latitude/longitude with an SQL query
...
Additionally, it does not take into account the curvature of the earth. This would not be an issue for short search radii. Otherwise Evan's and Igor's answers are more complete.
– John Vance
N...
How do I get the current date and time in PHP?
...e time would go by your server time. An easy workaround for this is to manually set the timezone by using date_default_timezone_set before the date() or time() functions are called to.
I'm in Melbourne, Australia so I have something like this:
date_default_timezone_set('Australia/Melbourne');
Or...
PHP parse/syntax errors; and how to solve them
...as T_STRING explains which symbol the parser/tokenizer couldn't process finally. This isn't necessarily the cause of the syntax mistake, however.
It's important to look into previous code lines as well. Often syntax errors are just mishaps that happened earlier. The error line number is just where ...
How do I get the last inserted ID of a MySQL table in PHP?
...
mysql_(...) is deprecated in PHP >= 5.5 version.
– Iago
Oct 30 '14 at 2:12
...
一个转型程序员的销售观 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...，我们擅长技术，却完全不懂营销跟销售。当意识到这个问题的严重性后，我开始承担起业务销售这个角色。
程序员转销售？能做得好吗？做了三年多的app程序开发，自已觉得在技术领域还是做得比较出色的，两年的安卓加一...
PHP file_get_contents() and setting request headers
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Actually, upon further reading on the file_get_contents() function:
// Create a stream
$opts = [
"http" => [
"method" => "GET",
"header" => "Accept-language: en\r\n" .
"Cookie: foo=bar\r\...
Returning JSON from a PHP Script
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While you're usually fine without it, you can and should set the Content-Type header:
<?php
$data = /** whatever you're serializing **/;
header('Content-Type: application/json');
echo json_encode($data);
If I'm not using a particular fra...
Is it possible to delete an object's property in PHP?
...ght mind, convert an array into an object? It just makes no sense (even if PHP allows it). I will not encorage and spread bad programming habits by commenting on this :) No offense.
– Yanick Rochon
Mar 21 '14 at 2:54
...
PHP & mySQL: Year 2038 Bug: What is it? How to solve it?
.... Instead of asking my question in bulk, I preferred to break it up into small parts so that it is easy for novice users to understand as well. So my question(s):
...