Paul Liversidge. I'd like your opinions as to why I don't use something like this I already have chunks of code at the top of some pages, particularly large forms that look something like this I know this could be done with a foreach loop and using eval statements so why don't I.
Is this being lazy? Or are there security holes or other issues? Opinions please. Follow Post Reply. H [dS]. Surely this also helps when reading and maintaining the code too as you can see at a glance what data is for what. Bruce Lewis.
If those are the only variables you reference in your page, maybe so. Paul Liversidge: I'd like your opinions as to why I don't use something like this Might there possibly be a reason why everyone is recommending you to not use register globals. I wonder. Louis-Philippe Huberdeau. Working with those superglobal arrays is recommanded, that way you know exacltly where your data is from. But if you really don't like it, or need a quick fix, you might want to look over extract , which turn array elements into variables.
Louis-Philippe Huberdeau: Working with those superglobal arrays is recommanded, that way you know exacltly where your data is from. Why do you reply to my posting by repeating precisely what I wrote? The reasoning was, "Why make the programmer take the extra step?
But more knowledgeable developers saw the danger in this feature, and it quickly became a lightning rod for the attentions of the PHP Security Project. What php. This coupled with the fact that PHP doesn't require variable initialization means writing insecure code is that much easier.
It was a difficult decision, but the PHP community decided to disable this directive by default. When on, people use variables yet really don't know for sure where they come from and can only assume. It uses a function called "authorized " to test the client status. Then it relies on the variable it sets, after testing "authorized ," in other parts of the script.
Furthermore, PHP does not issue Notice level messages by default, so the programmer is never alerted to the risk of relying on an undefined variable. Holy Cow! What Should I Do? Then you can see if your script will still run! Another way to test is to raise the error reporting level to ALL. That will cause PHP to issue Notice-level messages whenever the script relies on an undefined variable, and it may have the consequence of producing spurious output.
If your scripts do not initialize their variables, and most PHP scripts do not, this could be a real eye-opener! Before you do anything else make backups of every script involved! Take the following steps, on all PHP scripts, one at a time. Run the script and look carefully in the browser output or error log for PHP "Notice" messages about undefined variables. Using a text editor with a "find" function, locate every instance of the undefined variables. Make an explicit assignment statement to set the values of the undefined variables.
Lather, rinse, repeat for each undefined variable. Note : If a process is started in production mode, zend. If a process is started in development mode, zend.
If something gets stuck while this happens, the hard timeout will tick for the set amount of seconds. When the hard timeout is hit, PHP will exit ungracefully. When set to 0, the hard timeout will never activate. Enables parsing of source files in multibyte encodings. Enabling zend. When ISO incompatible encoding is used, both zend. Literal strings will be transliterated from zend.
Available only in Zend Multibyte mode. Such a timeout causes an internal longjmp call in Apache1 which can leave some extensions in an inconsistent state. By terminating the process any outstanding locks or memory will be cleaned up. This helps prevent poorly written scripts for eating up all available memory on a server. Note that to have no memory limit, set this directive to This value should be increased on systems where PHP opens many files, to reflect the quantity of the file operations performed.
The size represents the total number of bytes in the path strings stored, plus the size of the data associated with the cache entry. This means that in order to store longer paths in the cache, the cache size must be larger. This value does not directly control the number of distinct paths that can be cached. Duration of time in seconds for which to cache realpath information for a given file or directory. For systems with rarely changing files, consider increasing the value. Note : Every character in this directive is considered as separator!
Setting to "" means no superglobals will be set. Registration is done from left to right, newer values override older values. Note that the default distribution php. If these variables are not used within a script, having this directive on will result in a performance gain. PHP will do the conversions automatically if you use any of these. Be careful not to exceed the 32 bit signed integer limit if you're using 32bit versions as it will cause your script to fail.
Specifies the name of a file that is automatically parsed before the main file. The special value none disables auto-prepending. Specifies the name of a file that is automatically parsed after the main file.
The special value none disables auto-appending. Note : If the script is terminated with exit , auto-append will not occur. To disable this, simply set it to be empty. All versions of PHP will use this value as the charset within the default Content-Type header sent by PHP if the header isn't overridden by a call to header. This setting is used for multibyte modules such as mbstring and iconv. Default is empty. The format is like the system's PATH environment variable: a list of directories separated with a colon in Unix or semicolon in Windows.
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