PHP | imagedashedline() Function

Last Updated : 23 Aug, 2019

The imagedashedline() function is an inbuilt function in PHP which is used to draw a dashed line. This function returns TRUE on success and returns FALSE otherwise. Syntax:

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

Parameters: This function accepts six parameters as mentioned above and described below:

$image: The imagecreatetruecolor() function is used to create a blank image in a given size.
$x1: This parameter is used to hold the top left x coordinate.
$y1: This parameter is used to hold the top left y coordinate. (0, 0) is the top left corner of the image.
$x2: This parameter is used to hold the bottom right x coordinate.
$y2: This parameter is used to hold the bottom right y coordinate.
$color: This variable contains the filled color identifier. A color identifier created with imagecolorallocate() function.

Return Value: This function returns TRUE on success or FALSE on failure. Below programs illustrate the imagedashedline() function in PHP. Program 1:

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<?php  // Create the size of image or blank image $image = imagecreatetruecolor(400, 300);  // Set the background color of image $background_color = imagecolorallocate($image,  0, 153, 0);   // Fill background with above selected color imagefill($image, 0, 0, $background_color);  // Set the color of dotted line in image $color = imagecolorallocate($image,  255, 255, 255);  // Draw a dashed line imagedashedline($image, 0, 0, 100, 150, $color);   // Output the image header("Content-type: image/png"); imagepng($image);   ?>

Output:

Program 2:

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<?php  // Create the size of image or blank image $image = imagecreatetruecolor(400, 300);  // Set the background color of image $background_color = imagecolorallocate($image,  0, 153, 0);   // Fill background with above selected color imagefill($image, 0, 0, $background_color);  // Set the color of dotted line in image $white = imagecolorallocate($image, 255, 255, 255);   // $value is an array variable stored color // code of dotted image $values = Array(                 $white,                  $white,                  $white,                  $white,                  IMG_COLOR_TRANSPARENT,                  IMG_COLOR_TRANSPARENT,                  IMG_COLOR_TRANSPARENT,                  IMG_COLOR_TRANSPARENT                 );   imagesetstyle($image, $values);   // Draw the dashed line imageline($image, 50, 150, 300, 150, IMG_COLOR_STYLED);   // Save the image header("Content-type: image/png"); imagepng($image);  ?>