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What are the disadvantages of using persistent connection in PDO
... (Apache for mod_php, the current FastCGI process if you're using FastCGI, etc), not at the PHP level, and PHP doesn't tell the parent process to let the connection die when the script terminates abnormally.
If the dead script locked tables, those tables will remain locked until the connection dies...
When to use self over $this?
...context (are we in an object-context already? Are we outside of an object? etc).
When and why I should use session_regenerate_id()?
...g some important inputs (changing passwords, credentials, forgot passwords etc.) which may compromise site security or privacy policy.
See also:
PHP Security Guide: Sessions
Session Fixation(Nice read)
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Error 908: Permission RECEIVE_SMS has been denied. - App Inventor 2 中...
...到错误908（权限接收短信）的讨论。一位用户遇到了这个问题，并询问是否有人知道如何解决。其他用户提供了一些可能的解决方案，包括检查应用程序权限设置、确保手机上的权限设置正确、重新编译应用程序等。有人建议检...
Apache and Node.js on the Same Server
...or file handling (saving, editing, renaming, downloading, uploading files, etc.), he wants to use apache. So, I must:
10 A...
Can you explain the concept of streams?
... the compressed form on to another stream, or one which encrypts the data, etc. At the other end there'd be the reverse chain, decrypting, decompressing or whatever.
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What can you use Python generator functions for?
...an iterate like this:
db = MySQLdb.connect(host="localhost", user="root", passwd="root", db="domains")
cursor = db.cursor()
cursor.execute("SELECT domain FROM domains")
for result in ResultGenerator(cursor):
doSomethingWith(result)
db.close()
...
How would you access Object properties from within an object method? [closed]
...uent objects;Pen.dispenseInkOnto(Surface) makes more sense to me than Pen.getColor().
Getters and setters also encourage users of the class to ask the object for some data, perform a calculation, and then set some other value in the object, better known as procedural programming. You'd be better se...
Using semicolon (;) vs plus (+) with exec in find
...ecute multiple commands (separately for each argument),
Example:
$ find /etc/rc* -exec echo Arg: {} ';'
Arg: /etc/rc.common
Arg: /etc/rc.common~previous
Arg: /etc/rc.local
Arg: /etc/rc.netboot
All following arguments to find are taken to be arguments to the command.
The string {} is repl...
.htaccess rewrite to redirect root URL to subdirectory
...infinite redirect, since /subfolder is redirected to /subfolder/subfolder, etc... the RewriteCond %{REQUEST_URI} !^/subfolder makes sure that if a URL is already redirected, it's not done again
– patrick
Aug 23 '18 at 19:04
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