|
|
|
<?
function randomString($len) {
srand(date("s"));
$possible="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890!@#$%^&*()";
$str="";
while(strlen($str)<$len) {
$str.=substr($possible,(rand()%(strlen($possible))),1);
}
return($str);
}
?>
|
|
| Check parameters validity. Paranoia was designed to check the validity of the parameters that a php page will receive after a form submission. It can be used to check the variables sent by POST or GET
Categories : Algorithms, HTML and PHP, PHP, Variables | | | A very simple way to build and do a hierarchical html categories browser without javascript , just using html php and mySql
Categories : HTML and PHP, Databases, Algorithms, PHP, MySQL | | | Boolean Keyword Interpreter
Categories : PHP, Algorithms, Search Engines | | | Diffusion-Limited Aggregation visualization
Categories : PHP, Graphics, Algorithms, Math. | | | Browse a MySQL database & draw a tree view & load final items into a template page.
Categories : MySQL, Complete Programs, Algorithms, PHP, Databases | | | Recursive function to move files on a filesystem. It can be minor changed in order to copy recursively.
Categories : PHP, Filesystem, Algorithms | | | Fast PI calculator. Can easily find the 1000th decimal place of pi in 5 seconds.
Categories : PHP, BC math, Algorithms | | | Mail-lib provides a simple interface to the sendmail program. Note: you must actually have sendmail on your machine (sorry windows NT users).
Categories : Algorithms, Email, PHP | | | A recursive function to traverse a multi-dimensional array where the
dimensions are not known
Categories : Arrays, PHP, Algorithms | | | The Porter Word Stemming Algorithm in PHP
Reduces words to their base stem for search engines and indexing
Categories : Algorithms, PHP, Strings | | | SHA: Implementation of the Secure Hash Algorithm in pure PHP. This is a secure one-way function that can be used to perform challenge
response login algorithms over an insecure connection.
Categories : Algorithms, PHP, Security | | | minus - subtract arrays. Send two arrays and get an array with the operation A-B, elements on A that are not included on B.
Categories : PHP, Arrays, Algorithms | | | Calculate Body Mass Index
Categories : PHP, Algorithms, Regexps | | | A simple bubblesort that takes 2 arrays as argument.The first one is the actual data used for sorting, the second is data that will "tag along" with the first array, for instance a descriptive text about the data in the first array.
Categories : Algorithms, Arrays, PHP, Complete Programs | | | Paginating the mySQL data
Categories : PHP, Algorithms, Databases, MySQL, HTML and PHP | |
| | | | Jan Fedak wrote :162
Oh, my!
Firstly, calling srand() with the given parameter in the
function isn`t too smart (if you call the function twice in
a second, you get the same result).
Then, it is very tough on hardware -- why can`t you use
indexing instead of substr(). And if you MUST use substr(),
are you sure it`s smart to call strlen() in every iteration?
Also incrementing some variable in while() would be nicer
than calling strlen() again and again().
Happy coding.
| |
|
|
|
