PHP/Graphics Image/Line

Drawing a Line with imageline()

<?php
 header("Content-type: image/gif");
 $image = imagecreate( 200, 200 );
 $red = imagecolorallocate($image, 255,0,0);
 $blue = imagecolorallocate($image, 0,0,255 );
 imageline( $image, 0, 0, 199, 199, $blue );
 imagegif($image);
?>

Drawing Lines

<?php
     header ("Content-type: image/png");
   
     $im = ImageCreate (150, 150);
     $grey = ImageColorAllocate ($im, 230, 230, 230);
     $black = ImageColorAllocate ($im, 0, 0, 0);
   
     ImageLine($im, 0, 30, 150, 150, $black);
     ImageLine($im, 0, 150, 150, 30, $black);
     ImageLine($im, 0, 30, 150, 30, $black);
   
     ImageString($im, 3, 5, 5, "Figure 18.6: Lines", $black);
     ImagePng ($im);
     ImageDestroy ($im);
?>

Using imagefill()

<?php
 header("Content-type: image/gif");
 $image = imagecreate( 200, 200 );
 $red = imagecolorallocate($image, 255,0,0);
 $blue = imagecolorallocate($image, 0,0,255 );
 imageline( $image, 0, 0, 199, 199, $blue );
 imagefill( $image, 0, 199, $blue );
 imagegif($image);
?>