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Microsoft Excel mangles Diacritics in .csv files?
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A correctly formatted UTF8 file can have a Byte Order Mark as its first three octets. These are the hex values 0xEF, 0xBB, 0xBF. These octets serve to mark the file as UTF8 (since they are not relevant as "byte order" information).1 If this BOM does not exist, the consu...
如何选择机器学习算法 - 大数据 & AI - 清泛网移动版 - 专注C/C++及内核技术
...学习算法Choosing-a-Machine-Learning-Classifier如何针对某个分类问题决定使用何种机器学习算法？ 当然，如果你真心在乎准确率，最好的途径就是测试一大堆各式各样的算法（同时确保在每个算法上也测试不同的参数），最后选择在交...
Can PHP PDO Statements accept the table or column name as parameter?
...lowed_columns_array['tblTheTable'] = array('the_col_to_check');
Then the PHP check before running PDO looks like...
if(in_array($inTableName, $allowed_tables_array) && in_array($inColumnName,$allowed_columns_array[$inTableName]))
{
$sql = "SELECT $inColumnName AS columnInfo
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How to display HTML tags as plain text [duplicate]
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If the question's text were to be generated by PHP, htmlspecialchars() does what this answer suggests: replace the less-than and greater-than signs (and others) with their HTML entities. But the question does not specify, so this more general answer is a superset of all t...
实现一个简单的服务端推方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...时性较差。虽然可以通过加快轮询频率的方式来缓解这个问题，但相应付出的代价也不小：一来会使负载居高不下，二来也会让带宽捉襟见肘。
再来说说Long Polling，如果使用传统的LAMP技术去实现的话，大致如下所示：
Long Pol...
“互联网卖菜”没那么简单 创业者不要盲目跟风 - 资讯 - 清泛网 - 专注C/C+...
...自提的鲜果说，还是送菜上门的七天买菜网，都因为价格问题导致的盈利困境而歇业，价格是上门送菜的最大障碍，要么狂砸补贴，要么把量做大，维持开支，没有别的路。笔者接触过一些做上门送菜的创业者，往往会问第一个...
PHP Timestamp into DateTime
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You don't need to turn the string into a timestamp in order to create the DateTime object (in fact, its constructor doesn't even allow you to do this, as you can tell). You can simply feed your date string into the DateTime constructor as-is:
// Assuming $item->pubDate is "...
PHP ORMs: Doctrine vs. Propel
...better like the way you work with queries (DQL instead of Criteria):
<?php
// Propel
$c = new Criteria();
$c->add(ExamplePeer::ID, 20);
$items = ExamplePeer::doSelectJoinFoobar($c);
// Doctrine
$items = Doctrine_Query::create()
->from('Example e')
->leftJoin('e.Foobar')
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Get JSON object from URL
...//paragonie.com/blog/2017/10/certainty-automated-cacert-pem-management-for-php-software
// in most cases, you should set it to true
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, 'url_here');
$result = curl_exec($ch);
cu...
Fastest way to implode an associative array with keys
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Was trying to find this method in the PHP API myself this is definitely the way to go. If not the alternative is to use a modified implode method such as uk2.php.net/manual/en/function.implode.php#84684 but http_build_query() will properly be faster.
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