PHP GD Functions


<?php

bool imagedashedline ( GdImage $image, 
                                               int $x1, int $y1, 
                                               int $x2, int $y2, int $color )


where,

$image = The image identifier 

$x1 = The x-coordinate of the start point 

$y1 = The y-coordinate of the start point 

$x2 = The x-coordinate of the end point 

$y2 = The y-coordinate of the end point 

$color = The fill color as returned by imagecolorallocate

?>

$image

The image identifier.

$x1

x-coordinate of start point.

$y1

y-coordinate of start point.

$x2

x-coordinate of end point.

$y2

y-coordinate of end point.

$color

The fill color, a color identifier created by imagecolorallocate.

EXERCISE


<?php

echo 'PHP VERSION: ' . PHP_VERSION . '<br><br>';

$lang = 'en';

$sup_img = "png/baseXx.png";

$res1_img = 'png/PNG 056 01 baseXx-imagedashedline.png';

$sup_w = 384;
$sup_h = 288;

$bg_red = 48;
$bg_green = 48;
$bg_blue = 48;

$id_09 = imagecreatefrompng($sup_img);
$bgk_color = imagecolorallocate($id_09, 
                                                    $bg_red, 
                                                    $bg_green, 
                                                    $bg_blue);

 echo $sup_img; ?>
<br><br><img src="<?php echo 
$sup_img; ?>" alt="<?php echo $sup_img; ?>"><br><br><br>

<?php

$x10 = 30;
$y10 = 40;
$x1N = 200;
$y1N = 250;

$ln1_red = 0;
$ln1_green = 0;
$ln1_blue = 0;

$ln1_color = imagecolorallocate($id_09, 
                                                   $ln1_red, 
                                                   $ln1_green, 
                                                   $ln1_blue);
                                        
imagedashedline($id_09, 
                            $x10, $y10, 
                            $x1N, $y1N, 
                            $ln1_color);

$x20 = 100;
$y20 = 80;
$x2N = 120;
$y2N = 250;

$ln2_red = 255;
$ln2_green = 0;
$ln2_blue = 0;

$ln2_color = imagecolorallocate($id_09, 
                                                   $ln2_red, 
                                                   $ln2_green, 
                                                   $ln2_blue);
                                              
imagedashedline($id_09, 
                            $x20, $y20, 
                            $x2N, $y2N, 
                            $ln2_color);

imagepng($id_09, $res1_img);

echo $res1_img; ?>
<br><br><img src="<?php echo 
$res1_img; ?>" alt="<?php echo $res1_img; ?>"><br>

RESULT

baseXx.png

baseXx.png apr

PNG 056 01 baseXx-imagedashedline.png

EXERCISE


<?php

echo 'PHP VERSION: ' . PHP_VERSION . '<br><br>';

$lang = 'en';

$sup_img = "png/baseXx.png";

$res1_img = 'png/PNG 057 02 baseXx-imagesetstyle.png';

$sup_w = 384;
$sup_h = 288;

$id_09 = imagecreatefrompng($sup_img);

$bgk_color = imagecolorallocate($id_09, 48, 48, 48);

$black = imagecolorallocate($id_09, 0, 0, 0);

$red = imagecolorallocate($id_09, 255, 0, 0);

$white = imagecolorallocate($id_09, 255, 255, 255);

echo $sup_img; ?>

<br><br><img src="<?php echo $sup_img; ?>" 
alt="<?php echo $sup_img; ?>"><br><br><br>

<?php

$x10 = 30;
$y10 = 40;
$x1N = 200;
$y1N = 250;

$style1 = [ $black, $black, $black, $white, 
    $white, $white, $black, $black, $black, 
             $white, $white, $white, $white ];
imagesetstyle($id_09, $style1);
imageline($id_09, $x10, $y10, $x1N, $y1N, IMG_COLOR_STYLED); 

$x20 = 100;
$y20 = 80;
$x2N = 120;
$y2N = 250;

$style2 = [ $red, $red, $red, $white, $white, 
         $white, $red, $red, $red, $white, 
                    $white, $white, $white ];
imagesetstyle($id_09, $style2);
imageline($id_09, $x20, $y20, $x2N, $y2N, IMG_COLOR_STYLED);

imagepng($id_09, $res1_img);

echo $res1_img; ?>

<br><br><img src="<?php echo $res1_img; ?>" 
alt="<?php echo $res1_img; ?>"><br>