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jaswinder_rana · 06-05-2005, 05:15 PM

using variables to store and call functions

You can use variables to store function names and then call them.

PHP Code:


			
$functionName = 'sha1';

echo $functionName('string');



$functionName = 'md5';

echo $functionName('string');

Where its useful?
Like the example i shown you. You can store an encrypting function the nuse it alter. Then suppose somebody wants you to change all the encoding functions throughout the site
from
md5()

to
sha1()

So, if you can have a variable in which you can store function name and then store it in your config file. Then whenever you want to change it just change it in your config file and it'll change everywhere globally.

06-05-2005, 05:15 PM	#4 (permalink)
jaswinder_rana The Acquainted Join Date: May 2005 Posts: 106 Thanks: 0	*using variables to store and call functions* You can use variables to store function names and then call them. PHP Code: `$functionName = 'sha1'; echo $functionName('string'); $functionName = 'md5'; echo $functionName('string');` *Where its useful?* Like the example i shown you. You can store an encrypting function the nuse it alter. Then suppose somebody wants you to change all the encoding functions throughout the site from md5() to sha1() So, if you can have a variable in which you can store function name and then store it in your config file. Then whenever you want to change it just change it in your config file and it'll change everywhere globally. __________________ --------------------------- Errors = Improved Programming. Portfolio