imageline() is an inbuilt function in PHP that is used to draw a line between two given points.
Syntax
bool imageline(resource $image, int $x1, int $y1,int $x2, int $y2, int $color)
Parameters
imageline() takes six different parameters: $image, $x1, $y1, $x2, $y2 and $color.
$image − Specifies the image resource to work on.
$x1 − Specifies the starting x-coordinate.
$y1 − Specifies the starting y-coordinate.
$x2 − Specifies the ending x-coordinate.
$y2 − Specifies the ending y-coordinate.
$color − Specifies the line color and a color identifier created using imagecolorallocate() function.
Return Values
imageline() returns True on success or False on failure.
Example 1 − Add a line to an image
<?php
// Create an image using imagecreatefrompng() function
$img = imagecreatefrompng('C:\xampp\htdocs\test\515.png');
// allocated the line color
$text_color = imagecolorallocate($img, 255, 255, 0);
// Set the thickness of the line
imagesetthickness($img, 5);
// Add a line using imageline() function.
imageline($img, 80, 300, 1140, 300, $text_color);
// Output of the image
header('Content-type: image/png');
imagepng($img);
imagedestroy($img);
?>Output
Example 2
<?php
// Create an image using imagecreate() function
$img = imagecreate(700, 300);
// Allocate the colors
$grey = imagecolorallocate($img, 122, 122, 122);
$blue = imagecolorallocate($img, 0, 0, 255);
// Set the thickness of the line
imagesetthickness($img, 15);
// Add a grey background color
imageline($img, 0, 0, 550, 400, $grey);
// Add a blue line
imageline($img, 0, 0, 550, 400, $blue);
// Output the image
header('Content-type: image/png');
imagepng($img);
imagedestroy($img);
?>Output
