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| Code | ||||||||||||
<? ///////////////////////////////////////////////////////////////////////// // // counter.php - implements a simple Counter // // Author: Claus Radloff // // Description: // The counter in this file can count multiple counters. Therefore // every counter gets its own identifier. // The Fore- and Backgroundcolor and the number of digits are // defined, but can be overwritten. Fore- and Backgroundcolor may // be transparent as well. // The Parameters are passed in the URL. // Some Examples: // simple counter: // <img src="counter.php?Identifier=Test"> // // Counter with red background // <img src="counter.php?Identifier=Test&BGColor=255+0+0"> // or: // <img src="counter.php?Identifier=Test&BGColor=red"> // // Counter with red background, green foreground and 4 digits // <img src="counter.php?Identifier=Test&BGColor=255+0+0&FGColor=0+255+0&Length=4"> // or: // <img src="counter.php?Identifier=Test&BGColor=red&FGColor=green&Length=4"> // // Counter with transparent background and red foreground // <img src="counter.php?Identifier=Test&BGColor=transparent&FGColor=red"> // Header( "Content-type: image/gif"); require( "colors.php"); // Load the gd-library // under Windooze use this one // dl("php3_gd.dll"); // under UNIX use this one dl( "php3_gd.so"); // some default-values $Font = 5; $BGColor = GetColor( "black"); $BGTrans = False; $FGColor = GetColor( "white"); $FGTrans = False; $Length = 7; // get environment $query_string = getenv( "QUERY_STRING"); // parse environment // split query-string $env_array = split( "&", $query_string); // split in key=value and convert %XX while (list($key, $val) = each($env_array)) { // split list($name, $wert) = split( "=", $val); // replace %XX by character $name = urldecode($name); $wert = urldecode($wert); // write to $cgivars $CGIVars[$name] = $wert; } // eventually replace the default-values by the given parameters if ($CGIVars[ "BGColor"]) { if (ereg( "([0-9]*) ([0-9]*) ([0-9]*)", $CGIVars[ "BGColor"], $tmp)) { $BGColor[ "red"] = $tmp[1]; $BGColor[ "green"] = $tmp[2]; $BGColor[ "blue"] = $tmp[3]; } else if (eregi( "transparent", $CGIVars[ "BGColor"])) { $BGTrans = True; } else { $BGColor = GetColor($CGIVars[ "BGColor"]); } } if ($CGIVars[ "FGColor"]) { if (ereg( "([0-9]*) ([0-9]*) ([0-9]*)", $CGIVars[ "FGColor"], $tmp)) { $FGColor[ "red"] = $tmp[1]; $FGColor[ "green"] = $tmp[2]; $FGColor[ "blue"] = $tmp[3]; } else if (eregi( "transparent", $CGIVars[ "FGColor"])) { $FGTrans = True; } else { $FGColor = GetColor($CGIVars[ "FGColor"]); } } if ($CGIVars[ "Length"]) { $Length = $CGIVars[ "Length"]; } // calculate size of image $SizeX = $Length * 13; $SizeY = 16; // read counter-file if (file_exists( "counter.txt")) { $fp = fopen( "counter.txt", "rt"); while ($Line = fgets($fp, 999)) { // split lines into identifier/counter if (ereg( "([^ ]*) *([0-9]*)", $Line, $tmp)) { $CArr[ "$tmp[1]"] = $tmp[2]; } } // close file fclose($fp); // get counter $Counter = $CArr[$CGIVars[ "Identifier"]]; $Counter += 1; $CArr[$CGIVars[ "Identifier"]] = $Counter; } else { // the new counter is initialized with 1 $CArr[$CGIVars[ "Identifier"]] = 1; $Counter = 1; } // write counter file $fp = fopen( "counter.txt", "wt"); // output array elements reset($CArr); while (list($Key, $Value) = each($CArr)) { $tmp = sprintf( "%s %d\n", $Key, $Value); fwrite($fp, $tmp); } // close file fclose($fp); // Counter mit fhrenden Nullen auffllen // fill counter with leading 0s $Counter = sprintf( "%0".$Length. "d", $Counter); // create image $img = ImageCreate($SizeX + 4, $SizeY + 4); // use interlace ImageInterlace($img, 1); // transparent color for separators $trans = ImageColorAllocate($img, 1, 1, 1); ImageColorTransparent($img, $trans); // fill background if ($BGTrans) { ImageFill($img, 1, 1, $trans); } else { $col = ImageColorAllocate($img, $BGColor[ "red"], $BGColor[ "green"], $BGColor[ "blue"]); ImageFill($img, 1, 1, $col); } // output digits if ($FGTrans) { $col = $trans; } else { $col = ImageColorAllocate($img, $FGColor[ "red"], $FGColor[ "green"], $FGColor[ "blue"]); } $PosX = 0; for ($i = 1; $i <= strlen($Counter); $i++) { ImageString($img, $Font, $PosX + 3, 2 + $i % 2, substr($Counter, $i - 1, 1), $col); if ($i != 1) { // draw separator ImageLine($img, $PosX, 0, $PosX, $SizeY + 4, $trans); } $PosX += 13; } // output image ImageGif($img); ImageDestroy($img); ?> | ||||||||||||
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