Set the clipping rectangle
Syntax
imagesetclip( GdImage $image, int $x1, int $y1, int $x2, int $y2 ): bool
Parameters
image
A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().
x1
The x-coordinate of the upper left corner.
y1
The y-coordinate of the upper left corner.
x2
The x-coordinate of the lower right corner.
y2
The 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>