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How do you connect to multiple MySQL databases on a single webpage?
...l_xx functions are deprecated since php 5.5 and removed since php 7.0 (see http://php.net/manual/intro.mysql.php), use mysqli_xx functions or see the answer below from @Troelskn
You can make multiple calls to mysql_connect(), but if the parameters are the same you need to pass true for the '$new_...
What is the HTML tabindex attribute?
... tabbing (pressing the tab key to move focus) within the page.
Reference: http://www.w3.org/TR/html401/interact/forms.html#h-17.11.1
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Need to ZIP an entire directory using Node.js
... answered Sep 12 '13 at 22:06
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Is DateTime.Now the best way to measure a function's performance?
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Must also add recommendation that if your PerformWork() is very short that you may be able to call it repeatedly and compute the average of the batch of calls. Also, time an entire batch of calls rather than starting/stopping your Stopwatch ...
How do I determine file encoding in OS X?
...tect the encoding of a file. Read this answer, it explains why.
There's a command line tool, enca, that attempts to guess the encoding. You might want to check it out.
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How to implement Rate It feature in Android App
... to know whether or not a user has rated an app, to prevent ratings from becoming a currency (some developers might add an option like "Rate this app and get so and so in the app for free").
The class I wrote provides three buttons, and configures the dialog so that it is only shown after the app ...
Django Template Variables and Javascript
...as introduced a built in template filter just for this: docs.djangoproject.com/en/2.1/ref/templates/builtins/…
– Jon Sakas
Jan 19 '19 at 19:55
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minimize app to system tray
...show the
balloon tip that shows some information. Once the WindowState becomes
FormWindowState.Normal, disable the NotifyIcon object by setting its
Visible property to false. Now, you want the window to reappear when
you double click on the NotifyIcon object in the taskbar. For this,
handl...
When is CRC more appropriate to use than MD5/SHA1?
...zy dog.');# 1870ms 128 chars
My conclusion:
Use "crc32b" when you need http://en.wikipedia.org/wiki/Cyclic_redundancy_check and
you do not care about security.
Use "sha256" (or higher) when you need added security layer.
Do not use "md5" or "sha1" because they have:
some security issues when y...
Why are dates calculated from January 1st, 1970?
...he date was chosen. It just was.
Astronomers use their own epochal date: http://en.wikipedia.org/wiki/Epoch_(astronomy)
Why? A date has to be chosen to make the math work out. Any random date will work.
A date far in the past avoids negative numbers for the general case.
Some of the smarter p...