PHP Manual»GD and Image Funzioni»imagedashedline

imagedashedline

(PHP 4, PHP 5, PHP 7, PHP 8)

imagedashedline — Draw a dashed line

Descrizione

function imagedashedline(
    GdImage $image,
    int $x1,
    int $y1,
    int $x2,
    int $y2,
    int $color
): true

This function is deprecated. Use combination of imagesetstyle() and imageline() instead. 0, 0 is the top left corner of the image.

Elenco dei parametri

image: Una risorsa immagine, restituita da una delle funzioni di creazione immagine, come imagecreatetruecolor().
x1: x-coordinate of the first point.
y1: y-coordinate of the first point.
x2: x-coordinate of the second point.
y2: y-coordinate of the second point.
color: The fill color. A color identifier created with imagecolorallocate().

Valori restituiti

Always returns true.

Log delle modifiche

Versione	Descrizione
8.0.0	`image` expects a GdImage instance now; previously, a valid `gd` resource was expected.

Esempi

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');
?>

Il precedente esempio visualizzerà qualcosa simile a:

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');
?>

Vedere anche:

imagesetstyle() - Set the style for line drawing
imageline() - Draw a line