PHP implementation of the function is to display 8 colors of the color belt! _php

Since PHP's natural table parameters can only support 256, in order to achieve the display of 8 colors or more color bands, I use the method of parameter transfer to achieve. The specific implementation code is as follows:

1, the color of the process of graphics
transition.php
/*
* Function: Generate ribbon graphic
* Programmer: WLXZ
* Date: 2002-00-00
*/

Header ("Content-type:image/png");
$im = Imagecreate (255,50);
$bgcolor = imagecolorallocate ($im, 0, 0, 0);

$x = Trim ($_get[' x ');
$y = Trim ($_get[' y ');
$z = Trim ($_get[' z ');

for ($i =0; $i <255; $i + +) {
$fontcol = Imagecolorallocate ($im, $i * $x, $i * $y, $i * $z);
Imageline ($im, $i, 0, $i, $fontcol);
}

Imagepng ($im);
Imagedestroy ($im);
?>

2. Call to generate multiple different graphs
view_color.php
/*
function
* Programmer: To Lai
* Date: 2002-00-00
*/
?>


<title> </title>

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