Set the clipping rectangle
Syntax
imagesetclip(
GdImage $image,
int $x1,
int $y1,
int $x2,
int $y2
): boolParameters
imageA GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().
x1The x-coordinate of the upper left corner.
y1The y-coordinate of the upper left corner.
x2The x-coordinate of the lower right corner.
y2The y-coordinate of the lower right corner.
Return
Returns true on success or false on failure.
Examples
1 · return
<? $width = 100; $height = 100; $image = imagecreate($width, $height); $x1 = 25; $y1 = 25; $x2 = 75; $y2 = 75; $return = imagesetclip($image, $x1, $y1, $x2, $y2); var_export($return); ?>
true
2 · base64
<?
$width = 100;
$height = 100;
$image = imagecreatetruecolor($width, $height);
$x1 = 25;
$y1 = 25;
$x2 = 75;
$y2 = 75;
imagesetclip($image, $x1, $y1, $x2, $y2);
$red = 255;
$green = 255;
$blue = 255;
$color = imagecolorallocate($image, $red, $green, $blue);
$x1 = 0;
$y1 = 0;
$x2 = 100;
$y2 = 100;
imagefilledrectangle($image, $x1, $y1, $x2, $y2, $color);
ob_start();
imagepng($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/gAIDAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAn0lEQVR4nO3QwQ3AMAwDsaT77+yu0AP8KzmAAN05AAAAAAAAAHx2F7dmZnFt0b07N5+VlZ8QKxArECsQKxArECsQKxArECsQKxArECsQKxArECsQKxArECsQKxArECsQKxArECsQKxArECsQKxArECsQKxArECsQKxArECsQKxArECsQKxArECsQKxArECsQKxArECsQCwAAAAAAACB4AT7nA2YL3K1fAAAAAElFTkSuQmCC">
</body>
</html>
