function inverseHex($color)
{
$color = TRIM($color);
$prependHash = FALSE;
if (STRPOS($color, '#') !== FALSE) {
$prependHash = TRUE;
$color = STR_REPLACE('#', NULL, $color);
}
switch ($len = STRLEN($color)) {
case 3:
$color = PREG_REPLACE("/(.)(.)(.)/", "\\1\\1\\2\\2\\3\\3", $color);
case 6:
break;
default:
TRIGGER_ERROR("Invalid hex length ({$len}). Must be (3) or (6)", E_USER_ERROR);
}
if (!PREG_MATCH('/[a-f0-9]{6}/i', $color)) {
$color = HTMLENTITIES($color);
TRIGGER_ERROR("Invalid hex string #{$color}", E_USER_ERROR);
}
$r = DECHEX(255 - HEXDEC(SUBSTR($color, 0, 2)));
$r = STRLEN($r) > 1 ? $r : '0' . $r;
$g = DECHEX(255 - HEXDEC(SUBSTR($color, 2, 2)));
$g = STRLEN($g) > 1 ? $g : '0' . $g;
$b = DECHEX(255 - HEXDEC(SUBSTR($color, 4, 2)));
$b = STRLEN($b) > 1 ? $b : '0' . $b;
return ($prependHash ? '#' : NULL) . $r . $g . $b;
}
public function clear_td_tags(&$cells, $extag)
{
$exre = "/<" . $extag . ".[^>]+>/i";
$matches = array();
//print_R($cells);
for ($i = 0, $n = COUNT($cells); $i < $n; $i++) {
for ($j = 0, $nj = COUNT($cells[$i]); $j < $nj; $j++) {
$cell = $cells[$i][$j];
if (PREG_MATCH($exre, $cell, $matches)) {
//echo "$extag:this tag find $matches[0] n ";
} else {
$cells[$i][$j] = $this->clearTag($cell);
//echo "not find:".$cells[$i][$j][$k] ."n";
}
}
//for 2
}
//for 1
return $cells;
}