diff --git a/phplotdocs/phplot.php b/phplotdocs/phplot.php
index d1f0fee..dde58ae 120000
--- a/phplotdocs/phplot.php
+++ b/phplotdocs/phplot.php
@@ -1 +1 @@
-../phplot/phplot.php
\ No newline at end of file
+../src/phplot.php
\ No newline at end of file
diff --git a/src/phplot.php b/src/phplot.php
index e5b7465..b083e23 100644
--- a/src/phplot.php
+++ b/src/phplot.php
@@ -1908,7 +1908,7 @@ protected function ProcessTextGD($draw_it, $font, $angle, $x, $y, $color, $text,
             $y = $ypos - $r10 * $factor;
 
             // Call ImageString or ImageStringUp:
-            $draw_func($this->img, $font_number, $x, $y, $lines[$i], $color);
+            $draw_func($this->img, $font_number, (int)$x, (int)$y, $lines[$i], (int)$color);
 
             // Step to the next line of text. This is a rotation of (x=0, y=interline_spacing)
             $xpos += $r01 * $interline_step;
@@ -7520,10 +7520,10 @@ protected function DrawLegend()
                         // Draw color boxes:
                         ImageFilledRectangle(
                             $this->img,
-                            $dot_left_x,
-                            $y1,
-                            $dot_right_x,
-                            $y2,
+                            (int) $dot_left_x,
+                            (int) $y1,
+                            (int) $dot_right_x,
+                            (int) $y2,
                             $this->ndx_data_colors[$color_index]
                         );
                        // Draw a rectangle around the box, if enabled.
@@ -7533,7 +7533,14 @@ protected function DrawLegend()
                             } else {
                                 $color = $this->ndx_text_color;
                             }
-                            ImageRectangle($this->img, $dot_left_x, $y1, $dot_right_x, $y2, $color);
+                            ImageRectangle(
+                                $this->img, 
+                                (int) $dot_left_x, 
+                                (int) $y1, 
+                                (int) $dot_right_x, 
+                                (int) $y2, 
+                                (int) $color
+                            );
                         }
                 }
                 if (++$color_index > $max_color_index) {
@@ -7871,7 +7878,12 @@ protected function DrawBar(
             } else { // Suppress top shading (Note shade_top==FALSE && shade_side==FALSE is not allowed)
                 $pts = array($x2, $y2, $x2, $y1, $x2 + $shade, $y1 - $shade, $x2 + $shade, $y2 - $shade);
             }
-            ImageFilledPolygon($this->img, $pts, count($pts) / 2, $shade_color);
+
+            if (phpversion() > 8.0) {
+                ImageFilledPolygon($this->img, $pts, $shade_color);
+            } else {
+                ImageFilledPolygon($this->img, $pts, count($pts) / 2, $shade_color);
+            }
         }
 
         // Draw a border around the bar, if enabled.
@@ -8327,13 +8339,13 @@ protected function DrawPieChart()
                     // Draw the slice
                     ImageFilledArc(
                         $this->img,
-                        $xpos,
-                        $ypos + $h,
-                        $pie_width,
-                        $pie_height,
-                        $arc_end_angle,
-                        $arc_start_angle,
-                        $slicecol,
+                        (int) $xpos,
+                        (int) $ypos + $h,
+                        (int) $pie_width,
+                        (int) $pie_height,
+                        (int) $arc_end_angle,
+                        (int) $arc_start_angle,
+                        (int) $slicecol,
                         IMG_ARC_PIE
                     );
 
@@ -10029,4 +10041,4 @@ protected function DrawError($error_message)
 }
 
 // PRS12: Move subclasses to separate files
-// require_once 'phplot_truecolor.php';
+// require_once 'phplot_truecolor.php';
\ No newline at end of file