(PECL lapack >= 0.1.0)
Lapack::pseudoInverse — Calculate the inverse of a matrix
$a
   )Find the pseudoinverse of a matrix A.
a
    Matrix to invert
Inverted matrix (array of arrays).
Example #1 Using Lapack::pseudoInverse():
<?php
   $a = array(
       array( 8, 1, 6 ),
       array( 3, 5, 7 ),
       array( 4, 9, 2 ),
   );
   $result = Lapack::pseudoInverse($a);
   ?>