php-cs-fxier

src/Phpml/Exception/InvalidArgumentException.php

@@ -57,5 +57,4 @@ class InvalidArgumentException extends \Exception
     {
         return new self('Inconsistent matrix aupplied');
     }
-
 }

src/Phpml/Exception/MatrixException.php

@@ -21,5 +21,4 @@ class MatrixException extends \Exception
     {
         return new self('Column out of range');
     }
-
 }

src/Phpml/Math/Matrix.php

@@ -1,4 +1,5 @@
 <?php
+
 declare (strict_types = 1);
 
 namespace Phpml\Math;
@@ -40,7 +41,7 @@ class Matrix
         $this->columns = count($matrix[0]);
 
         if ($validate) {
-            for ($i = 0; $i < $this->rows; $i++) {
+            for ($i = 0; $i < $this->rows; ++$i) {
                 if (count($matrix[$i]) !== $this->columns) {
                     throw InvalidArgumentException::matrixDimensionsDidNotMatch();
                 }
@@ -88,7 +89,7 @@ class Matrix
         }
 
         $values = [];
-        for ($i = 0; $i < $this->rows; $i++) {
+        for ($i = 0; $i < $this->rows; ++$i) {
             $values[] = $this->matrix[$i][$column];
         }
 
@@ -117,7 +118,7 @@ class Matrix
             $determinant = $this->matrix[0][0] * $this->matrix[1][1] -
                 $this->matrix[0][1] * $this->matrix[1][0];
         } else {
-            for ($j = 0; $j < $this->columns; $j++) {
+            for ($j = 0; $j < $this->columns; ++$j) {
                 $subMatrix = $this->crossOut(0, $j);
                 if (fmod($j, 2) == 0) {
                     $determinant += $this->matrix[0][$j] * $subMatrix->getDeterminant();
@@ -144,8 +145,8 @@ class Matrix
     public function transpose()
     {
         $newMatrix = [];
-        for ($i = 0; $i < $this->rows; $i++) {
-            for ($j = 0; $j < $this->columns; $j++) {
+        for ($i = 0; $i < $this->rows; ++$i) {
+            for ($j = 0; $j < $this->columns; ++$j) {
                 $newMatrix[$j][$i] = $this->matrix[$i][$j];
             }
         }
@@ -168,14 +169,15 @@ class Matrix
 
         $product = [];
         $multiplier = $matrix->toArray();
-        for ($i = 0; $i < $this->rows; $i++) {
-            for ($j = 0; $j < $matrix->getColumns(); $j++) {
+        for ($i = 0; $i < $this->rows; ++$i) {
+            for ($j = 0; $j < $matrix->getColumns(); ++$j) {
                 $product[$i][$j] = 0;
-                for ($k = 0; $k < $this->columns; $k++) {
+                for ($k = 0; $k < $this->columns; ++$k) {
                     $product[$i][$j] += $this->matrix[$i][$k] * $multiplier[$k][$j];
                 }
             }
         }
+
         return new self($product, false);
     }
 
@@ -187,8 +189,8 @@ class Matrix
     public function divideByScalar($value)
     {
         $newMatrix = array();
-        for ($i = 0; $i < $this->rows; $i++) {
-            for ($j = 0; $j < $this->columns; $j++) {
+        for ($i = 0; $i < $this->rows; ++$i) {
+            for ($j = 0; $j < $this->columns; ++$j) {
                 $newMatrix[$i][$j] = $this->matrix[$i][$j] / $value;
             }
         }
@@ -208,8 +210,8 @@ class Matrix
         }
 
         $newMatrix = array();
-        for ($i = 0; $i < $this->rows; $i++) {
-            for ($j = 0; $j < $this->columns; $j++) {
+        for ($i = 0; $i < $this->rows; ++$i) {
+            for ($j = 0; $j < $this->columns; ++$j) {
                 $subMatrix = $this->crossOut($i, $j);
                 if (fmod($i + $j, 2) == 0) {
                     $newMatrix[$i][$j] = ($subMatrix->getDeterminant());
@@ -234,20 +236,19 @@ class Matrix
     {
         $newMatrix = [];
         $r = 0;
-        for ($i = 0; $i < $this->rows; $i++) {
+        for ($i = 0; $i < $this->rows; ++$i) {
             $c = 0;
             if ($row != $i) {
-                for ($j = 0; $j < $this->columns; $j++) {
+                for ($j = 0; $j < $this->columns; ++$j) {
                     if ($column != $j) {
                         $newMatrix[$r][$c] = $this->matrix[$i][$j];
-                        $c++;
+                        ++$c;
                     }
                 }
-                $r++;
+                ++$r;
             }
         }
 
         return new self($newMatrix, false);
     }
-
 }

src/Phpml/Regression/LeastSquares.php

@@ -64,7 +64,7 @@ class LeastSquares implements Regression
     }
 
     /**
-     * coefficient(b) = (X'X)-1X'Y
+     * coefficient(b) = (X'X)-1X'Y.
      */
     private function computeCoefficients()
     {

tests/Phpml/Regression/LeastSquaresTest.php

@@ -48,5 +48,4 @@ class LeastSquaresTest extends \PHPUnit_Framework_TestCase
 
         $this->assertEquals(4094, $regression->predict([60000, 1996]), '', $delta);
     }
-
 }