Mark Hensler — Fri, 05 Apr 2002 00:42:11 +0000

it's adding in hex.. (hex numbers start with 0x)

The printf() function allows you to format output.
%X tells it to output the integer value in uppercase hex format.
%02X tells it to print 2 hex digits and pad it with a zero.
If I just used %2X, it would output " 0 0 0" instead of "000000", so I had to pad it.

I used a hex counter because I could eliminate the array and extra 3 variables.
I then had the loop print rather than append a string, so I could eliminate the large string variable.
So now the script uses less resources.

The <<< is called the heredoc syntax.

korndragon — Thu, 04 Apr 2002 22:24:07 +0000

Quote: for ($b=0x00; $b<=0xFF; $b+=0x33) {
printf(" \n", $r, $g, $b);
}
echo " \n";

i see that it goes up by 33's, but how dows it get the CC, and the FF? would you explain it for me?

korndragon — Thu, 04 Apr 2002 22:19:40 +0000

I didn't really post it here as a tool, but more for ppl to see how a loop, and the 216 color chart is set up...

Quote: echo<<
cool! ive never seen that before! thanx:D

Mark Hensler — Thu, 04 Apr 2002 06:52:28 +0000

optimized PHP...

<?php
echo<<<myHTML
<html>
<head>
<style>
BODY, TD {
    font-family: verdana, arial, monospace;
    font-size: 12px;
}
</style>
</head>
<body bgcolor=\"#FFFFFF\">

<br />
<form name=\"myForm\" id=\"myForm\" action=\"\">
<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\">
 <tr>
  <td align=\"right\">
    onMouseover:&nbsp;
  </td>
  <td>
    <input type=\"text\" name=\"over\" size=\"7\" />
  </td>
 </tr>
 <tr>
  <td align=\"right\">
    onClick:&nbsp;
  </td>
  <td>
    <input type=\"text\" name=\"click\" size=\"7\" />
  </td>
 </tr>
</table>
</form>

<table bgcolor=\"#FFFFFF\" border=\"0\" cellspacing=\"5\" cellpadding=\"2\" align=\"center\">
 <tr>

myHTML;

for ($r=0x00; $r<=0xFF; $r+=0x33) {
    echo \"  <td bgcolor=\\"#000000\\">\n\";
    for ($g=0x00; $g<=0xFF; $g+=0x33) {
        echo \"    <table border=\\"0\\" cellspacing=\\"1\\" cellpadding=\\"0\\">\n\";
        echo \"     <tr>\n\n\";
        for ($b=0x00; $b<=0xFF; $b+=0x33) {
            printf(\"      <td width=\\"20\\" height=\\"20\\" bgcolor=\\"#%02X%02X%02X\\" onMouseover=\\"document.myForm.over.value=this.bgColor\\" onClick=\\"document.myForm.click.value=this.bgColor\\">&nbsp;</td>\n\", $r, $g, $b);
        }
        echo \"     </tr>\n\";
        echo \"    </table>\n\";
    }
    echo \"  </td>\n\";
    if ($r==0x66) {
        echo \" </tr>\n\";
        echo \" \n<tr>\n\";
    }
}

echo<<<myHTML
 </tr>
</table>
</body>
</html>
myHTML;
?>

Still doesn't work in NN 4.7

Ideally, you'd save the output to a static HTML page.