imagecreatetruecolor
The bug reported by 'michi at marel dot at' also exists in PHP version 5.1.1. This functions just works with vertical lines!
imagedashedline
(PHP 4, PHP 5)
imagedashedline — Draw a dashed line
Description
bool imagedashedline
( resource $image
, int $x1
, int $y1
, int $x2
, int $y2
, int $color
)
This function is deprecated. Use combination of imagesetstyle() and imageline() instead.
Parameters
- image
-
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
- x1
-
Upper left x coordinate.
- y1
-
Upper left y coordinate 0, 0 is the top left corner of the image.
- x2
-
Bottom right x coordinate.
- y2
-
Bottom right y coordinate.
- color
-
The fill color. A color identifier created with imagecolorallocate().
Return Values
Always returns true
Examples
Example #1 imagedashedline() example
<?php
// Create a 100x100 image
$im = imagecreatetruecolor(100, 100);
$white = imagecolorallocate($im, 0xFF, 0xFF, 0xFF);
// Draw a vertical dashed line
imagedashedline($im, 50, 25, 50, 75, $white);
// Save the image
imagepng($im, './dashedline.png');
imagedestroy($im);
?>
The above example will output something similar to:
Example #2 Alternative to imagedashedline()
<?php
// Create a 100x100 image
$im = imagecreatetruecolor(100, 100);
$white = imagecolorallocate($im, 0xFF, 0xFF, 0xFF);
// Define our style: First 4 pixels is white and the
// next 4 is transparent. This creates the dashed line effect
$style = Array(
$white,
$white,
$white,
$white,
IMG_COLOR_TRANSPARENT,
IMG_COLOR_TRANSPARENT,
IMG_COLOR_TRANSPARENT,
IMG_COLOR_TRANSPARENT
);
imagesetstyle($im, $style);
// Draw the dashed line
imageline($im, 50, 25, 50, 75, IMG_COLOR_STYLED);
// Save the image
imagepng($im, './imageline.png');
imagedestroy($im);
?>
add a note
User Contributed Notesimagedashedline
ProfessorNeo at gmx dot de
16-Feb-2006 09:07
16-Feb-2006 09:07
alien-scripts.de
13-Jul-2005 11:17
13-Jul-2005 11:17
I make my own dashedline:
<?
for($l=50;$l<=550;$l+=5)
{
if($da == 0) { $da = 1; }
elseif($da == 1){
imageline($bild,$l,50,$l+5,50,$green);
$da = 0; }
}
?>
$l is the x-value
and we have a dashed line :)
michi at marel dot at
19-Nov-2003 03:49
19-Nov-2003 03:49
There's a bug till PHP 4.0.4 in this function. You can only draw vertical dashed lines. To draw other dashed lines you can set <ImageSetStyle> to a special dashed line and draw it by <ImageLine>.
Sample code:
<?php
function MDashedLine($image, $x0, $y0, $x1, $y1, $fg, $bg)
{
$st = array($fg, $fg, $fg, $fg, $bg, $bg, $bg, $bg);
ImageSetStyle($image, $st);
ImageLine($image, $x0, $y0, $x1, $y1, IMG_COLOR_STYLED);
}
?>