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“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
...m via $_GET and the remaining method=POST fields in $_POST alongside.
With modern PHP configurations (≥ 5.6) it has become feasible (not fashionable) to use $_REQUEST['vars'] again, which mashes GET and POST params.
If you are employing mod_rewrite, then you should check both the access.log as we...
Why does my JavaScript code receive a “No 'Access-Control-Allow-Origin' header is present on the req
...rity/wiki/CrossOriginRequestSecurity
# http://enable-cors.org/
# <IfModule mod_headers.c>
# Header set Access-Control-Allow-Origin "*"
# </IfModule>
# Header set Header set Access-Control-Allow-Origin "*"
# Header always set Access-Control-Allow-Credentials "true"
Access-...
How the single threaded non blocking IO model works in Node.js
...programmer, but I'm interested in how the single threaded non blocking IO model works.
After I read the article understanding-the-node-js-event-loop , I'm really confused about it.
It gave an example for the model:
...
How do I expire a PHP session after 30 minutes?
...sion handler, the age of the session data is calculated on the file's last modification date and not the last access date:
Note: If you are using the default file-based session handler, your filesystem must keep track of access times (atime). Windows FAT does not so you will have to come up with...
Transfer-Encoding: gzip vs. Content-Encoding: gzip
...s: Different Content-Encoding requires different ETag This is btw what the mod_deflate bug I refer to in my answer is all about. Makes me wonder why this application-level detail is in the HTTP standard in the first place. When using Transfer-Encoding however, a transport level setting, there's no n...
Why is the Java main method static?
...ng;)V");
... ...
{ /* Make sure the main method is public */
jint mods;
jmethodID mid;
jobject obj = (*env)->ToReflectedMethod(env, mainClass,
mainID, JNI_TRUE);
... ...
/* Build argument array */
mainArgs = NewPlatformStringArray(env...
Python's many ways of string formatting — are the older ones (going to be) deprecated?
...se #4966: revamp the sequence docs in order to better explain the state of modern Python. This might seem like a sign that a plan to deprecate % formatting was back on the cards... but diving into the bug tracker reveals that the intent was the opposite. On the bug tracker, the author of the commit ...
Why is unsigned integer overflow defined behavior but signed integer overflow isn't?
...nary notation.
C99 6.2.6.2:2:
If the sign bit is one, the value shall be modified in one of the following ways:
— the corresponding value with sign bit 0 is negated (sign and magnitude);
— the sign bit has the value −(2N) (two’s complement);
— the sign bit has the value −(2N − 1) (on...
Code Golf - π day
...tml"/>
<!-- Skip even lines -->
<xsl:template match="s[@y mod 2=0]">
<xsl:variable name="next">
<!-- Just go to next line.-->
<s R="{@R}" y="{@y+1}" x="{-@R}" area="{@area}"/>
</xsl:variable>
<xsl:apply-templates select="msxsl:no...
Why is f(i = -1, i = -1) undefined behavior?
...ure g++, Clang, and MSVC will all do what you expected" I wouldn't trust a modern compiler. They're evil. For example they might recognize that this is undefined behaviour and assume this code is unreachable. If they don't do so today, they might do so tomorrow. Any UB is a ticking time bomb.
...