PHP | imagedashedline() Function

Last Updated : 11 Jul, 2025

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:

php

<?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:

php

<?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);

?>