Nice! Okay, you have made your point, and your opinion has been noted.
The "dude" that wrote the program may very well know what he is doing; that does not mean that you know what you are doing.
Your posts have already made it quite clearly evident that you have no idea whether the script is "resource intensive" or not and that you have no idea how much ram the script is likely to use.
And now you have proven that you are completely clueless about what is involved with these PHP settings, which is exactly why you shouldn't be messing with them.
No, you don't know what you are doing, and your statements in these posts make that crystal clear. There is nothing wrong with not knowing something; it's just lame to act like you do when you don't. You can say those scripts don't work as many times as you like, and it does not change the fact that your inability to understand what those shell and perl scripts are doing does not mean they don't "work". They do "work", if you know how to use them. Of course, you never bothered to indicate what instructions you were following, and there is more than one section in the wiki that deals with such stuff - I believe from your code snippets that you were referring to the Wiki article on PHP.ini; those instruction work properly for what they were intended to do, which was to change to max upload filesize. Modifying that to make other php.ini changes is not covered in that article.
That is the easy part - knowing what to type, and why, and how to accomplish your goal, is another thing all together, as you have just proven. Since you "know what you are doing", you shouldn't even need the wiki article to solve your problem.
All that said, you could have taken another approach. You might have explained what you were trying to install, and what changes you felt needed to be made, and why. You might have even asked how to set up a php.ini to facilitate your application, but instead you decided that "the wiki article doesn't work", took it upon yourself to follow the directions "for all intents and purposes" and then come on here and complain that it didn't work as expected. You might want to take the time to review How To Ask Questions The Smart Way...and maybe you will learn something. Or not.
The "bottom line" is pretty clear here: since we are retarded and you know what you are doing, you obviously don't need any help - so knock yourself out! Good Luck with that.