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Javascript when to use prototypes
...eriting from a prototype. After that, it depends on how many instances you allocate of each type. But in many modular designs, there is only one instance of a given type.
And in fact, it has been suggested by many people that implementation inheritance is evil. That is, if there are some common ope...
Secure hash and salt for PHP passwords
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DISCLAIMER: This answer was written in 2008.
Since then, PHP has given us password_hash and password_verify and, since their introduction, they are the recommended password hashing & checking method.
The theory of the answer is still a good read though.
TL;DR
Don'ts
D...
Pointers, smart pointers or shared pointers? [duplicate]
...assume you meant scoped pointer which uses the RAII pattern. It is a stack-allocated object that wraps a pointer; when it goes out of scope, it calls delete on the pointer it wraps. It "owns" the contained pointer in that it is in charge of deleteing it at some point. They allow you to get a raw ref...
How to find the last day of the month from date?
How can I get the last day of the month in PHP?
28 Answers
28
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Create or write/append in text file
...s:
$txt = "user id date";
$myfile = file_put_contents('logs.txt', $txt.PHP_EOL , FILE_APPEND | LOCK_EX);
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JavaScript: client-side vs. server-side validation
...eous calls to check if unique; if unique, also reserve it with a temporary token assigned to the client that is also released if a different username is tested by the same session ID. The token should expire after a reasonable time. Example: TicketMaster seat reserve.
– Elaskan...
How can I measure the speed of code written in PHP? [closed]
...ow three of those :
Webgrind ; web interface ; should work on any Apache+PHP server
WinCacheGrind ; only on windows
KCacheGrind ; probably only Linux and linux-like ; That's the one I prefer, btw
To get profiling files, you have to install and configure Xdebug ; take a look at the Profiling PHP...
How can I use “sizeof” in a preprocessor macro?
...wer, but to add on to Mike's version, here's a version we use that doesn't allocate any memory. I didn't come up with the original size check, I found it on the internet years ago and unfortunately can't reference the author. The other two are just extensions of the same idea.
Because they are type...
How to list the contents of a package using YUM?
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rpm -ql [packageName]
Example
# rpm -ql php-fpm
/etc/php-fpm.conf
/etc/php-fpm.d
/etc/php-fpm.d/www.conf
/etc/sysconfig/php-fpm
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/run/php-fpm
/usr/lib/systemd/system/php-fpm.service
/usr/sbin/php-fpm
/usr/share/doc/php-fpm-5.6.0
/usr/share/man/man8/php-fpm.8.gz...
Is there a command to refresh environment variables from the command prompt in Windows?
... Perhaps you can avoid the temporary file using the FOR /F "tokens=1,*" %%c IN ('resetvars.vbs') DO construct
– tzot
Oct 5 '08 at 9:51
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