rdorado / site-analyzer

src/Matrix.php

Braces +21 added lines, -7 removed lines

@@ -24,10 +24,14 @@ 
     public static function submatrix($matrix, $columns)
     {
         $n = count($matrix);
-        if ($n == 0) return [];
+        if ($n == 0) {
+            return [];
+        }
        
         $m = count($matrix[0]);
-        if ($m == 0) return $matrix;
+        if ($m == 0) {
+            return $matrix;
+        }
        
         $result = [];       
         for ($i=0; $i<$n; $i++) {
@@ -47,7 +51,9 @@ 
     public static function toSquareMatrix($matrix, $ncol, mcol, $val, $sparse = False)
     {
         $n = count($matrix);
-        if ($n == 0) return [];
+        if ($n == 0) {
+            return [];
+        }
         
         $labels = {};
         $id = 0;
@@ -58,7 +64,9 @@ 
             $val = $matrix[$i][$val];
             $data[] = [$nid, $mid, $val];
         }
-        if ($sparse) return ["data" => $data, "labels" => $labels];
+        if ($sparse) {
+            return ["data" => $data, "labels" => $labels];
+        }
         
         $nlab = count($labels);
         $result = [];
@@ -83,7 +91,9 @@ 
         $n2 = count($matrix2);        
         $m2 = count($matrix2[0]);
         
-        if ($n2 !== $m1) throw new Exception("Incompatible matrices: matrix1.columns != matrix2.rows");
+        if ($n2 !== $m1) {
+            throw new Exception("Incompatible matrices: matrix1.columns != matrix2.rows");
+        }
 
         $result = [];
         for ($i=0; $i<$n1; $i++) {           
@@ -104,9 +114,13 @@ 
      */
     public static function power($matrix, $n)
     {
-        if($n <= 1) return $matrix;        
+        if($n <= 1) {
+            return $matrix;
+        }
         $resp = multiply($matrix, $matrix);
-        if($n == 2) return $resp;
+        if($n == 2) {
+            return $resp;
+        }
         for($i=2; $i<$n; $i++) {
             $resp = multiply($resp, $matrix);
         }