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Run php script as daemon process
...have wrappers in PHP (basically the pcntl and posix extensions).
In a few words - writing a daemon (this is posible only on *nix based OS-es - Windows uses services) is like this:
Call umask(0) to prevent permission issues.
fork() and have the parent exit.
Call setsid().
Setup signal processing o...
float:left; vs display:inline; vs display:inline-block; vs display:table-cell;
...white spaces between elements are treated the same as white spaces between words of text, so you can get gaps appearing between elements. There are work-arounds to this, but none of them are ideal. (the best is simply to not have any spaces between the elements)
display:table-cell;
Another one whe...
Is there a perfect algorithm for chess? [closed]
... would be if white can force a win despite any attempt by black - in other words, if there is a perfect strategy for white.
– Dave Sherohman
Jan 24 '10 at 10:12
2
...
How To Create a Flexible Plug-In Architecture?
... found was to ship the customer a C# compiler!
If the spec is filled with words like:
Flexible
Plug-In
Customisable
Ask lots of questions about how you will support the system (and how support will be charged for, as each customer will think their case is the normal case and should not need any...
Postgres: Distinct but only for one column
...
Just a word of caution: that might not return the ID value or the metadata value that belong "together"
– a_horse_with_no_name
Jun 4 '13 at 9:21
...
Semicolons superfluous at the end of a line in shell scripts?
...ash:
metacharacter
A character that, when unquoted, separates words. One of the following:
| & ; ( ) < > space tab
control operator
A token that performs a control function. It is one of the following symbols:
|| & && ; ;; ( ) | |&am...
Why isn't vector a STL container?
...cular specialization of a template. That
could be addressed with careful wording. The larger issue is that the
(packed) specialization of vector offers an important
optimization that clients of the standard library genuinely seek, but
would not longer be available. It is unlikely that we wou...
Show a PDF files in users browser via PHP/Perl
...ashleedawg: I doubt the moniker “intellectual property”. This is just word hacking to make information hoarding seem like not only a legitimate business model, but even as worthwhile for the public to defend against innovation.
– Svante
Jul 1 '19 at 14:31
...
What are forward declarations in C++?
...ss really is just a simple class declaration with a fancy name.
In other words, the "forward" just adds ballast to the term, as any declaration can be seen as being forward in so far as it declares some identifier before it is used.
(As to what is a declaration as opposed to a definition, again ...
What does the construct x = x || y mean?
...-+---------------
true | true true
false | true false
In other words, it's only false when both values are false.
How is it different in JavaScript?
JavaScript is a bit different, because it's a loosely typed language. In this case it means that you can use || operator with values that...