Warning: include_once(PEAR.php): failed to open stream: No such file or directory in D:\Apache241\htdocs\phpexcel\Classes\PHPExcel\Shared\JAMA\examples\Stats.php on line 22

Warning: include_once(): Failed opening 'PEAR.php' for inclusion (include_path='c:\php74\includes') in D:\Apache241\htdocs\phpexcel\Classes\PHPExcel\Shared\JAMA\examples\Stats.php on line 22
Cholesky decomposition: 16 random 2x2 matrices

Fatal error: Uncaught Error: Class 'Matrix' not found in D:\Apache241\htdocs\phpexcel\Classes\PHPExcel\Shared\JAMA\examples\benchmark.php:97 Stack trace: #0 D:\Apache241\htdocs\phpexcel\Classes\PHPExcel\Shared\JAMA\examples\benchmark.php(174): Benchmark->runCholesky(2, 16) #1 {main} thrown in D:\Apache241\htdocs\phpexcel\Classes\PHPExcel\Shared\JAMA\examples\benchmark.php on line 97