What is the significance of including the coordinates for the lines in the code?

Including the coordinates for the lines in the code is significant because it helps in positioning the lines accurately on the canvas. By specifying the coordinates, you can control the starting and ending points of the lines, as well as their length and direction. This ensures that the lines are drawn exactly where you want them to be on the canvas.

// Specify the coordinates for the lines
$x1 = 10;
$y1 = 10;
$x2 = 100;
$y2 = 100;

// Draw a line on the canvas using the specified coordinates
imageline($image, $x1, $y1, $x2, $y2, $color);