PHP | imagesetstyle() function

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The imagesetstyle() function is an inbuilt function in PHP which is used to set the style to be used by all line drawing functions like imageline() or imagepolygon().

Syntax:

bool imagesetstyle( resource $image, array $style )

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

$image: It specifies the image resource to work on.
$style: It specifies the array of pixel colors.

Return Value: This function returns TRUE on success or FALSE on failure.

Below given programs illustrate the imagesetstyle() function in PHP:
Program 1 (Drawing on an image):

<?php 
// Load the png image 
$image = imagecreatefrompng( 
    'https://media.zambiatek.com/wp-content/uploads/zambiatek-13.png'); 
  
// Prepare the colors 
$red = imagecolorallocate($image, 255, 0, 0); 
$green   = imagecolorallocate($image, 0, 255, 0); 
  
// Draw a dashed line, 5 red pixels, 5 white pixels 
$style = array($red, $red, $red, $red, $red, $green, $green, $green, $green, $green); 
imagesetstyle($image, $style); 
imageline($image, 0, 100, 800, 100, IMG_COLOR_STYLED); 
  
// Output image to the browser 
header('Content-type: image/png'); 
imagepng($image); 
?> 

Output:

Program 2 (Drawing on a blank drawing):

<?php 
//Create a blank image 
$image = imagecreatetruecolor(700, 200); 
  
// Set the background color of image 
$background_color = imagecolorallocate($image, 255, 255, 255); 
  
// Fill background with above selected color 
imagefill($image, 0, 0, $background_color); 
  
// Prepare the colors 
$red = imagecolorallocate($image, 255, 0, 0); 
$green = imagecolorallocate($image, 0, 255, 0); 
  
// Draw a dashed line, 7 red pixels, 3 white pixels 
$style = array($red, $red, $red, $red, $red, $ren, $red, $green, $green, $green); 
imagesetstyle($image, $style); 
  
// Set the vertices of polygon 
$values = array( 
    150, 150, 
    450, 150, 
    150, 50, 
); 
  
// Draw the polygon 
imagepolygon($image, $values, 3, IMG_COLOR_STYLED); 
  
// Output image to the browser 
header('Content-type: image/png'); 
imagepng($image); 
?> 

Output:

Reference: https://www.php.net/manual/en/function.imagesetstyle.php

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