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What's the use of ob_start() in php?
... I assume output buffering has to be enabled in the .ini file order to call ob_start(); Is this correct? What happens if it isn't enabled?
– Kevin Wheeler
Aug 14 '15 at 3:48
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搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...搭建高可用MongoDB集群（一）——配置MongoDB》提到了几个问题还没有解决。主节点挂了能否自动切换连接？目前需要手工切换。 在上一篇文章《搭建高可用MongoDB集群（一）——配置MongoDB》 提到了几个问题还没有解决。
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How to use getJSON, sending data with post method?
...exOf("?") == -1 ? "?" : "&")+"callback=?", data, func, "json"); }
In order to use jsonp, and POST method, this function adds the "callback" GET parameter to the URL. This is the way to use it:
$.postJSON("http://example.com/json.php",{ id : 287 }, function (data) {
console.log(data.name);
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How to get the file extension in PHP? [duplicate]
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I don't recommend this. You are relying on the order of the array being the same years from now. It's a lazy solution that will most likely cause issues in the future.
– Wade
Jul 29 '16 at 20:14
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How to use phpexcel to read data and insert into database?
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In order to read data from microsoft excel 2007 by codeigniter just create a helper function excel_helper.php and add the following in:
require_once APPPATH.'libraries/phpexcel/PHPExcel.php';
require_once APPPATH.'l...
Is it possible to create static classes in PHP (like in C#)?
...push the session to the database.
Another advantage is you can ignore the order you call things as everything will be setup on demand.
class Factory {
static function &getDB ($construct_params = null)
{
static $instance;
if( ! is_object($instance) )
{
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using jquery $.ajax to call a PHP function
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Get current URL path in PHP [duplicate]
...ST_URI']. From the docs:
'REQUEST_URI'
The URI which was given in order to access this page; for instance, '/index.html'.
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How to get the client IP address in PHP [duplicate]
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I believe the code is missing some expression and the order of priorities is inversed, so it should be like this: $ip = $_SERVER['HTTP_CLIENT_IP']?$_SERVER['HTTP_CLIENT_IP']:($_SERVER['HTTP_X_FORWARDED_FOR']?$_SERVER['HTTP_X_FORWARDED_FOR']:$_SERVER['REMOTE_ADDR']); Nevertheless...
笨法玩电商网站秒杀 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...跟不上，程序就会堆积大量连接，这可能会引起很多连锁问题：一方面可能导致内存不足，以PHP为例，一个连接通常占用10M左右，堆积一千个连接的话，10G内存就没有了；另一方面大量的连接可能耗尽端口资源，具体取决于内核...