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11 code exmaples found for All Categories.
# Title Author Date Views
4543  Weighted Random - Random Scripts usually chose one out of each item, and each item have an equal chance to be chosen. But what if you want an item to be chosed more frequently than other?

PHP, Math., Arrays
 Chao Xu 2006-12-03 7632
4635  Prime number finder (Sieve of Erastothenes)

PHP, Algorithms, Math.
 Chao Xu 2007-05-15 5179
4566  Fast PI calculator. Can easily find the 1000th decimal place of pi in 5 seconds.

PHP, BC math, Algorithms
 Chao Xu 2007-01-23 5056
4637  Diffusion-Limited Aggregation visualization

PHP, Graphics, Algorithms, Math.
 Chao Xu 2007-05-15 3515
4602  imageconvolution() does not appear in PHP with non-bundled GD libraries or a PHP version lower than 5.1. I wrote a replication of imageconvolution() in PHP.

PHP, GD image library, Graphics
 Chao Xu 2007-03-13 2612
4601  Imagefilter function - There are servers with GD library but not bundled with PHP. Imagefilter, will not work if the GD library is not bundled. So here is the code that will do exactly what imagefilter do.

PHP, GD image library, Graphics
 Chao Xu 2007-03-13 2227
4577  BCrand, a function returns large random numbers

PHP, BC math, Algorithms
 Chao Xu 2007-02-14 2057
4574  Get the root of a number with any precision

Algorithms, BC math, Math.
 Chao Xu 2007-01-31 1988
4639  Find the peak memory usage (PHP5+)

PHP, Memory
 Chao Xu 2007-05-15 1873
4638  Queue class VS Native array

PHP, PHP Classes, Arrays
 Chao Xu 2007-05-15 1820
4636  Prime Spiral is a image plotted with all the primes in a number spiral.

Algorithms, Graphics, GD image library, Math.
 Chao Xu 2007-05-15 1758