array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'en', ), 'this' => array ( 0 => 'function.imagedashedline.php', 1 => 'imagedashedline', ), 'up' => array ( 0 => 'ref.image.php', 1 => 'GD and Image Functions', ), 'prev' => array ( 0 => 'function.imagecropauto.php', 1 => 'imagecropauto', ), 'next' => array ( 0 => 'function.imagedestroy.php', 1 => 'imagedestroy', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/image/functions/imagedashedline.xml', ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); ?>
(PHP 4, PHP 5, PHP 7, PHP 8)
imagedashedline — Draw a dashed line
This function is deprecated. Use combination of imagesetstyle() and imageline() instead.
image
A GdImage object, 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().
Version | Description |
---|---|
8.0.0 |
image expects a GdImage
instance now; previously, a valid gd resource was expected.
|
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);
?>