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What is an abstract class in PHP?
...declared abstract.
Note: Traits support the use of abstract methods in order to impose requirements upon the exhibiting class.
Example below :
class Non_Abstract_Class
{
abstract protected function getValue();
public function printOut() {
echo "Hello how are you?";
}
}
$...
Export to CSV via PHP
...turn you own sql
$sql = "SELECT id, date, params, value FROM sometable ORDER BY date;";
return $sql;
}
function getExportData()
{
$values = array();
$sql = $this->getSql();
if (strlen($sql) > 0)
{
$result = dbquery($sql); // opens the database and executes the...
Fastest Way to Serve a File Using PHP
...he solutions from it and from others in the discussion.
The solutions are ordered from best solution to worst but also from the solution needing the most control over the web server to the one needing the less. There don't seem to be an easy way to have one solution that is both fast and work every...
WordPress asking for my FTP credentials to install plugins
...s so that WordPress can try to do what it needs to via FTP."
Solution:
In order to find out what user your instance of apache is running as, create a test script with the following content:
<?php echo(exec("whoami")); ?>
For me, it was daemon and not www-data. Then, fix the permission by:
...
What is causing “Unable to allocate memory for pool” in PHP?
... In my case I had to change from file-backed to POSIX-compliant in order to get rid of the error.
– Attila Fulop
Jul 24 '12 at 9:45
4
...
PHP Session Fixation / Hijacking
...
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.
...
Safari 3rd party cookie iframe trick no longer working?
...s because it requires that a user actually click/interact with the page in order to have the popup not blocked. This solution that Safari has come up with seems to work well: advertisers won't be able to secretly set cross-domain cookies, and embedded apps will require a user to interact before bein...
ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C++内核技术
...底层传输之上提供完全相同的行为。 这种方法存在两个问题： 一，在特定的传输之上建立类TCP的封装实际上使得传输成为多余的了。如果这种方法的行为类似于TCP，那么为什么一开始就不用TCP呢？（性能特性排除在这个规...
PHP $_SERVER['HTTP_HOST'] vs. $_SERVER['SERVER_NAME'], am I understanding the man pages correctly?
...ymfony framework that tries to get the hostname from every way possible in order of best practice:
function get_host() {
if ($host = $_SERVER['HTTP_X_FORWARDED_HOST'])
{
$elements = explode(',', $host);
$host = trim(end($elements));
}
else
{
if (!$host =...
How do I remove  from the beginning of a file?
...
Three words for you:
Byte Order Mark (BOM)
That's the representation for the UTF-8 BOM in ISO-8859-1. You have to tell your editor to not use BOMs or use a different editor to strip them out.
To automatize the BOM's removal you can use awk as shown ...