HomeMenu
Jesus · Bible · HTML · CSS · JS · PHP · SVG · Applications

imagesetpixel

Description

The imagesetpixel of Image for PHP set a single pixel.

Syntax

imagesetpixel(
    GdImage $image,
    int $x,
    int $y,
    int $color
): bool

Parameters

image

A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().

x

x-coordinate.

y

y-coordinate.

color

A color identifier created with imagecolorallocate().

Return

Returns true on success or false on failure.

Examples

1 · return

<?

$width = 100;
$height = 100;
$image = imagecreate($width, $height);

$red = 255;
$green = 255;
$blue = 255;
$color = imagecolorallocate($image, $red, $green, $blue);

$x = 0;
$y = 0;

$return = imagesetpixel($image, $x, $y, $color);

var_export($return);

true

2 · base64

<?

$width = 100;
$height = 100;
$image = imagecreatetruecolor($width, $height);

$red = 255;
$green = 255;
$blue = 255;
$color = imagecolorallocate($image, $red, $green, $blue);

$x = 50;
$y = 50;
imagesetpixel($image, $x, $y, $color);

ob_start();

    imagepng($image);

$output = ob_get_clean();

echo '<!doctype html>
<html>
<body>
    <img src="data:image/png;base64,' . base64_encode($output) . '">
</body>
</html>';

<!doctype html>
<html>
<body>
    <img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAIAAAD/gAIDAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAO0lEQVR4nO3OMQEAAAgDoPUvPUN4eAgJSAAAAAAAAAAAAAAAAAAA4JG21wUAAAAAAAAAAAAAAAAAAHYGZzAC/so5nyEAAAAASUVORK5CYII=">
</body>
</html>

3 · base64 · random

<?

$width = 100;
$height = 100;
$image = imagecreatetruecolor($width, $height);

$red = 255;
$green = 255;
$blue = 255;
$color = imagecolorallocate($image, $red, $green, $blue);

for($i = 0; $i < 1000; ++$i)
{
    $x = rand(0, $width);
    $y = rand(0, $height);
    imagesetpixel($image, $x, $y, $color);
}

ob_start();

    imagepng($image);

$output = ob_get_clean();

echo '<!doctype html>
<html>
<body>
    <img src="data:image/png;base64,' . base64_encode($output) . '">
</body>
</html>';

<!doctype html>
<html>
<body>
    <img src="data:image/png;base64,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">
</body>
</html>