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SPA best practices for authentication and session management
...n this is famous, but the lessons contained therein are pretty important:
https://www.nccgroup.trust/us/about-us/newsroom-and-events/blog/2011/august/javascript-cryptography-considered-harmful/
To summarize:
A man-in-the-middle attack can trivially replace your crypto code with <script>
f...
Google Authenticator available as a public service?
...
There are a variety of libraries for PHP (The LAMP Stack)
PHP
https://code.google.com/p/ga4php/
http://www.idontplaydarts.com/2011/07/google-totp-two-factor-authentication-for-php/
You should be careful when implementing two-factor auth, you need to ensure your clocks on the server an...
How do I “undo” a --single-branch clone?
...gnorecase = true
precomposeunicode = false
[remote "origin"]
url = https://github.com/owner/repo.git
fetch = +refs/heads/master:refs/remotes/origin/master
[branch "master"]
remote = origin
merge = refs/heads/master
rebase = true
I compared this to a full clone, and saw that...
How can I append a string to an existing field in MySQL?
...ld to add full URL, ignoring null fields:
UPDATE test SET image = CONCAT('https://my-site.com/images/',image) WHERE image IS NOT NULL;
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what does npm -D flag mean?
...
The -D flag is the shortcut for: --save-dev. Source: https://docs.npmjs.com/cli/install
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What is the difference between HTTP_HOST and SERVER_NAME in PHP?
...d virtualhosts)
Note that HTTP_HOST does not contain :443 when running on HTTPS (unless you're running on a non-standard port, which I haven't tested).
As others have noted, the two also differ when using IPv6:
$_SERVER['HTTP_HOST'] == '[::1]'
$_SERVER['SERVER_NAME'] == '::1'
...
Redirecting from HTTP to HTTPS with PHP
...king on a shopping cart website and I would like to redirect the user to a HTTPS page when he's entering his billing details and maintain the HTTPS connection for the next pages until he logs out.
...
PHP memory profiling
...dn't work properly.
So I've tried another tool and it worked well for me.
https://github.com/arnaud-lb/php-memory-profiler
This is what I've done on my Ubuntu server to enable it:
sudo apt-get install libjudy-dev libjudydebian1
sudo pecl install memprof
echo "extension=memprof.so" > /etc/php5/mo...
git push fails: RPC failed; result=22, HTTP code = 411
...ou attempt to push a large set of changes to a Git repository with HTTP or HTTPS, you may get an error message such as error: RPC failed; result=22, HTTP code = 411. This is caused by a Git configuration default which limits certain HTTP operations to 1 megabyte.
To change this limit run within you...
How can I fill a div with an image while keeping it proportional?
...100%;
min-height: 100%
}
<div class="fill">
<img src="https://lorempizza.com/320/240" alt="" />
</div>
JSFiddle here
I tested this successfully in IE9, Chrome 31, and Opera 18. But no other browsers were tested. As always you must consider your particular suppo...