imagecolorset(3) [php man page]

IMAGECOLORSET(3)							 1							  IMAGECOLORSET(3)

imagecolorset - Set the color for the specified palette index

SYNOPSIS

       void imagecolorset (resource  $image, int  $index, int  $red, int  $green, int  $blue, [int  $alpha])

DESCRIPTION

	This  sets  the  specified  index  in  the palette to the specified color. This is useful for creating flood-fill-like effects in palleted
       images without the overhead of performing the actual flood-fill.

PARAMETERS

	      o $
		image -An image resource, returned by one of the image creation functions, such as imagecreatetruecolor(3).

	      o $index
		- An index in the palette.

	      o $red
		-Value of red component.

	      o $green
		-Value of green component.

	      o $blue
		-Value of blue component.

	      o $alpha
		- Value of alpha component.

RETURN VALUES

	No value is returned.

CHANGELOG

       +--------+----------------------------------+
       |Version |				   |
       |	|				   |
       |	|	    Description 	   |
       |	|				   |
       +--------+----------------------------------+
       | 5.4.0	|				   |
       |	|				   |
       |	|  The $alpha parameter was added. |
       |	|				   |
       +--------+----------------------------------+
EXAMPLES

       Example #1

	      imagecolorset(3) example

	      <?php
	      // Create a 300x100 image
	      $im = imagecreate(300, 100);

	      // Set the background to be red
	      imagecolorallocate($im, 255, 0, 0);

	      // Get the color index for the background
	      $bg = imagecolorat($im, 0, 0);

	      // Set the backgrund to be blue
	      imagecolorset($im, $bg, 0, 0, 255);

	      // Output the image to the browser
	      header('Content-Type: image/png');

	      imagepng($im);
	      imagedestroy($im);
	      ?>

SEE ALSO

       imagecolorat(3).

PHP Documentation Group 													  IMAGECOLORSET(3)

Check Out this Related Man Page

IMAGECOLORRESOLVEALPHA(3)						 1						 IMAGECOLORRESOLVEALPHA(3)

imagecolorresolvealpha - Get the index of the specified color + alpha or its closest possible alternative

SYNOPSIS

       int imagecolorresolvealpha (resource  $image, int  $red, int  $green, int  $blue, int  $alpha)

DESCRIPTION

	This function is guaranteed to return a color index for a requested color, either the exact color or the closest possible alternative.

PARAMETERS

	      o $
		image -An image resource, returned by one of the image creation functions, such as imagecreatetruecolor(3).

	      o $red
		-Value of red component.

	      o $green
		-Value of green component.

	      o $blue
		-Value of blue component.

	      o $alpha
		- A value between 0 and 127.  0 indicates completely opaque while 127 indicates completely transparent.

	The colors parameters are integers between 0 and 255 or hexadecimals between 0x00 and 0xFF.

RETURN VALUES

	Returns a color index.

EXAMPLES

       Example #1

	      Using imagecoloresolvealpha(3) to get colors from an image

	      <?php
	      // Load an image
	      $im = imagecreatefromgif('phplogo.gif');

	      // Get closest colors from the image
	      $colors = array();
	      $colors[] = imagecolorresolvealpha($im, 255, 255, 255, 0);
	      $colors[] = imagecolorresolvealpha($im, 0, 0, 200, 127);

	      // Output
	      print_r($colors);

	      imagedestroy($im);
	      ?>

	      The above example will output something similar to:

	      Array
	      (
		  [0] => 89
		  [1] => 85
	      )

NOTES

       Note

	      This function requires GD 2.0.1 or later (2.0.28 or later is recommended).

SEE ALSO

       imagecolorclosestalpha(3).

PHP Documentation Group 												 IMAGECOLORRESOLVEALPHA(3)

Linux and UNIX Man Pages

imagecolorset(3) [php man page]

Check Out this Related Man Page