PHP and MySQL Web Development 4th Ed-tqw-_darksiderg

Temporarily Altering the Runtime Environment
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Identifying the Script Owner
You can find out the user who owns the script being run with a call to the
get_current_user() function, as follows:
echo get_current_user();
This information can sometimes be useful for solving permissions issues.
Finding Out When the Script Was Modified
Adding a last modification date to each page in a site is a fairly popular thing to do.
You can check the last modification date of a script with the getlastmod() (note the
lack of underscores in the function name) function, as follows:
echo date(‘g:i a, j M Y’,getlastmod());
The function getlastmod() returns a Unix timestamp, which you can feed to date(),
as done here, to produce a human-readable date.
Temporarily Altering the Runtime Environment
You can view the directives set in the php.ini file or change them for the life of a single
script.This capability can be particularly useful, for example, in conjunction with the
max_execution_time directive if you know your script will take some time to run.
You can access and change the directives using the twin functions ini_get() and
ini_set(). Listing 24.2 shows a simple script that uses these functions.
Listing 24.2
iniset.php— Resets Variables from the php.ini File
The ini_set() function takes two parameters.The first is the name of the configuration
directive from php.ini that you would like to change, and the second is the value you
would like to change it to. It returns the previous value of the directive.
In this case, you reset the value from the default 30-second (or whatever is set in your
php.ini file) maximum time for a script to run to 120 seconds.