PHP : Function Reference : Image Functions : imagecolorstotal PHP Examples Tutorials References

Code Examples / Notes » imagecolorstotal

bisqwit

This code shows the palettes for all .gif files in the current working directory. (Output is HTML.) <?php print '<pre>'; foreach(glob('*.gif') as $src_fn) { $im2 = ImageCreateFromGif($src_fn); echo '<a href="',htmlspecialchars($src_fn),'">'; print sprintf('%-30s', $src_fn); echo '</a>'; $cc = ImageColorsTotal($im2); for($n=0; $n<$cc; ++$n) { $c = ImageColorsForIndex($im2, $n); print sprintf('<span style="background:#%02X%02X%02X"> </span>', $c['red'], $c['green'], $c['blue']); } ImageDestroy($im2); print "\n"; } print '</pre>'; ?>

black-eye

I created a function to count the colors in a .gif file automatically. Works perfect on Win2k Servers <?PHP function bildinfo($bild) { /* ******* FUNCTION BILDINFO() ******* ******* ******* ******* ******* ******* ******* ******* ******* ******* ******* ******* ******* Copyright 2003 by www.BLACKEYE.org ******* ******* ******* ******* ******* ******* ******* ******* ******* ******* Please don't change the copyright in this file. You can modify this file, but NEVER remove the copyright ! If YOU were the creator of this function, you would say the same, eh ? :) For more informations / How to use: HOMEPAGE: www.blackeye.org ******* ******* ******* ******* ******* ******* ******* ******* */ $fp = fopen($bild, "rb"); // Open image in binary mode (for windows) $f = fread($fp, filesize($bild)); $c = bin2hex($f); // Binary file -> Hex $c = ereg_replace("5c30", "0000", $c); // In gif-files "5c30" stands for real "00" values. why ? i dont know $b = $c; $pos = strpos($c, "fe0102"); // 6 Byte termination for the color table if ($pos > 0) { $c = substr($c, 26); $c = substr($c, 0, strpos($c, "fe0102")); // Termination for the color table of non-transparent images } else { $c = substr($c, 26); $c = substr($c, 0, strpos($c, "21f904")); // Termination for the color table } echo "<table border='0'>"; $i = 0; $y = 0; $str = ""; $pix = chunk_split($c, 6, ";"); // 6 Char long block (color) $pix = explode(";",$pix); sort($pix); foreach($pix as $col) { if ($col && !ereg($col.";", $str) && strlen($col) == 6) // So that no color is twice in the list { $str .= $col.";"; $i++; // Für die Table anzeige $y++; // Anzahl Farben if ($i == 1) { echo ""; } echo "<td width='6' height='8' bgcolor='#$col' style='border:1px solid #000000;font-size:1px;' title='©2003 by www.BLACKEYE.org'>"; echo " "; echo "</td>"; if ($i == 10) { echo ""; $i = 0; } } } echo "</table>"; echo $y." visible colors"; } $bild = ""; // Imagefile bildinfo($bild); ?> Only copy & paste this text into your .php file, where you want to show the image.

imagecolorstotal

Find out the number of colors in an image's palette (PHP 4, PHP 5)
int imagecolorstotal ( resource image )

Code Examples / Notes » imagecolorstotal

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imagecolorstotal

Find out the number of colors in an image's palette (PHP 4, PHP 5) int imagecolorstotal ( resource image )

Code Examples / Notes » imagecolorstotal

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Find out the number of colors in an image's palette (PHP 4, PHP 5)
int imagecolorstotal ( resource image )