PHP Tutorial - PHP imagefilledarc() function

Draw a partial arc and fill it.

Syntax

PHP imagefilledarc() function has the following syntax.

bool imagefilledarc ( resource $image , int $cx , int $cy , int $width , int $height , int $start , int $end , int $color , int $style )

Parameter

PHP imagefilledarc() function has the following parameters.

image - An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
cx - x-coordinate of the center.
cy - y-coordinate of the center.
width - The arc width.
height - The arc height.
start - The arc start angle, in degrees.
end - The arc end angle, in degrees. 0? is located at the three-o'clock position, and the arc is drawn clockwise.
color - A color identifier created with imagecolorallocate().
style - A bitwise OR of the following possibilities:

The possible values for style:

Value	Meaning
IMG_ARC_PIE	draws a filled wedge shape with a curved edge
IMG_ARC_CHORD	draws a straight line between the starting and ending angles
IMG_ARC_NOFILL	draws the outside edge line without drawing the two lines toward the center of the arc
IMG_ARC_EDGED	draws an unfilled wedge shape with a curved edge

Return

Returns TRUE on success or FALSE on failure.

Example 1


<?php//from ww w .j av a  2s.c o  m

// create image
$image = imagecreatetruecolor(100, 100);

// allocate some colors
$gray     = imagecolorallocate($image, 0xC0, 0xC0, 0xC0);
$navy     = imagecolorallocate($image, 0x00, 0x00, 0x80);
$red      = imagecolorallocate($image, 0xFF, 0x00, 0x00);

imagefilledarc($image, 50, 50, 100, 50, 0, 45, $navy, IMG_ARC_PIE);
imagefilledarc($image, 50, 50, 100, 50, 45, 75 , $gray, IMG_ARC_PIE);
imagefilledarc($image, 50, 50, 100, 50, 75, 360 , $red, IMG_ARC_PIE);


// flush image
header('Content-type: image/png');
imagepng($image);
imagedestroy($image);
?>

Example 2

You can combine these four style together.

IMG_ARC_CHORD and IMG_ARC_PIE cannot be combined together.

imagefilledarc($image, 200, 150, 200, 200, 345, 15, $green,IMG_ARC_CHORD | IMG_ARC_NOFILL);
imagefilledarc($image, 200, 150, 200, 200, 345, 15, $green,IMG_ARC_EDGED | IMG_ARC_NOFILL);

Example:


<?php 
  $myImage = imagecreate( 500, 500 ); 
  $myGray = imagecolorallocate( $myImage, 204, 204, 204 ); 
  $myBlack = imagecolorallocate( $myImage, 0, 0, 0 ); 
  imagefilledarc($image, 200, 150, 200, 200, 345, 15, $green,IMG_ARC_CHORD | IMG_ARC_NOFILL);
  header( "Content-type: image/png" ); 
  imagepng( $myImage ); 
  imagedestroy( $myImage ); 
?>