PHP | imageline() Function

The imageline() function is an inbuilt function in PHP which is used to set the draws a line between the two given points.

Syntax:

bool imageline( resource $image, int $x1, int $y1, 
int $x2, int $y2, int $color )

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

• $image: It specifies the image resource to work on.
• $x1: It specifies the starting x-coordinate.
• $y1: It specifies the starting y-coordinate.
• $x2: It specifies the ending x-coordinate.
• $y2: It specifies the ending y-coordinate.
• $color: It specifies the line color.

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

Below examples illustrate the imageline() function in PHP:

Example 1: In this example add a line to a image.

<?php

// Create an image instance
$im = imagecreatefrompng(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png');

// Prepare the line color
$text_color = imagecolorallocate($im, 255, 0, 0);

// Add a line
imageline($im, 40, 100, 640, 100, $text_color);

// Output the image
header('Content-type: image/png');
imagepng($im);
imagedestroy($im);
?>

Output:

Example 2: In this example we will add a line to a drawing.

<?php

// Create an image instance
$im = imagecreate(700, 200);

// Initialize the colors
$yellow = imagecolorallocate($im, 255, 255, 0);
$blue = imagecolorallocate($im, 0, 0, 255);

// Add a yellow background
imageline($im, 0, 0, 700, 200, $yellow);

// Add a blue line
imageline($im, 0, 0, 840, 250, $blue);

// Output the image
header('Content-type: image/png');
imagepng($im);
imagedestroy($im);
?>

Output:

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