<?php
/**
* This class gives complete information about 'Web Safe Colors'
*
* It can checks if a color if web safe or not.
* It can also return any of RGB, Hexadecimal or name of the web safe color....
* ... by entring any one of above mentioned three parameters. Pretty neat eh ? :)
*
*
*
* @author Rochak Chauhan
*
*/
class WebSafeColors {
// initialize the database of 140 web safe colors
private $isExactMatch = -1;
private $webSafeColorDatabase = Array(
0=>Array('colorName'=>'aliceblue', 'hexValue'=>'#F0F8FF'),
1=>Array('colorName'=>'darkslategray', 'hexValue'=>'#2F4F4F'),
2=>Array('colorName'=>'lightsalmon', 'hexValue'=>'#FFA07A'),
3=>Array('colorName'=>'palevioletred', 'hexValue'=>'#DB7093'),
4=>Array('colorName'=>'antiquewhite', 'hexValue'=>'#FAEBD7'),
5=>Array('colorName'=>'darkturquoise', 'hexValue'=>'#00CED1'),
6=>Array('colorName'=>'lightseagreen', 'hexValue'=>'#20B2AA'),
7=>Array('colorName'=>'papayawhip', 'hexValue'=>'#FFEFD5'),
8=>Array('colorName'=>'aqua', 'hexValue'=>'#00FFFF'),
9=>Array('colorName'=>'darkviolet', 'hexValue'=>'#9400D3'),
10=>Array('colorName'=>'lightskyblue', 'hexValue'=>'#87CEFA'),
11=>Array('colorName'=>'peachpuff', 'hexValue'=>'#FFDAB9'),
12=>Array('colorName'=>'aquamarine', 'hexValue'=>'#7FFFD4'),
13=>Array('colorName'=>'deeppink', 'hexValue'=>'#FF1493'),
14=>Array('colorName'=>'lightslategray', 'hexValue'=>'#778899'),
15=>Array('colorName'=>'peru', 'hexValue'=>'#CD853F'),
16=>Array('colorName'=>'azure', 'hexValue'=>'#F0FFFF'),
17=>Array('colorName'=>'deepskyblue', 'hexValue'=>'#00BFFF'),
18=>Array('colorName'=>'lightsteelblue', 'hexValue'=>'#B0C4DE'),
19=>Array('colorName'=>'pink', 'hexValue'=>'#FFC0CB'),
20=>Array('colorName'=>'beige', 'hexValue'=>'#F5F5DC'),
21=>Array('colorName'=>'dimgray', 'hexValue'=>'#696969'),
22=>Array('colorName'=>'lightyellow', 'hexValue'=>'#FFFFE0'),
23=>Array('colorName'=>'plum', 'hexValue'=>'#DDA0DD'),
24=>Array('colorName'=>'bisque', 'hexValue'=>'#FFE4C4'),
25=>Array('colorName'=>'dodgerblue', 'hexValue'=>'#1E90FF'),
26=>Array('colorName'=>'lime', 'hexValue'=>'#00FF00'),
27=>Array('colorName'=>'powderblue', 'hexValue'=>'#B0E0E6'),
28=>Array('colorName'=>'black', 'hexValue'=>'#000000'),
29=>Array('colorName'=>'firebrick', 'hexValue'=>'#B22222'),
30=>Array('colorName'=>'limegreen', 'hexValue'=>'#32CD32'),
31=>Array('colorName'=>'purple', 'hexValue'=>'#800080'),
32=>Array('colorName'=>'blanchedalmond', 'hexValue'=>'#FFEBCD'),
33=>Array('colorName'=>'floralwhite', 'hexValue'=>'#FFFAF0'),
34=>Array('colorName'=>'linen', 'hexValue'=>'#FAF0E6'),
35=>Array('colorName'=>'red', 'hexValue'=>'#FF0000'),
36=>Array('colorName'=>'blue', 'hexValue'=>'#0000FF'),
37=>Array('colorName'=>'forestgreen', 'hexValue'=>'#228B22'),
38=>Array('colorName'=>'magenta', 'hexValue'=>'#FF00FF'),
39=>Array('colorName'=>'rosybrown', 'hexValue'=>'#BC8F8F'),
40=>Array('colorName'=>'blueviolet', 'hexValue'=>'#8A2BE2'),
41=>Array('colorName'=>'fuchsia', 'hexValue'=>'#FF00FF'),
42=>Array('colorName'=>'maroon', 'hexValue'=>'#800000'),
43=>Array('colorName'=>'royalblue', 'hexValue'=>'#4169E1'),
44=>Array('colorName'=>'brown', 'hexValue'=>'#A52A2A'),
45=>Array('colorName'=>'gainsboro', 'hexValue'=>'#DCDCDC'),
46=>Array('colorName'=>'mediumaquamarine', 'hexValue'=>'#66CDAA'),
47=>Array('colorName'=>'saddlebrown', 'hexValue'=>'#8B4513'),
48=>Array('colorName'=>'burlywood', 'hexValue'=>'#DEB887'),
49=>Array('colorName'=>'ghostwhite', 'hexValue'=>'#F8F8FF'),
50=>Array('colorName'=>'mediumblue', 'hexValue'=>'#0000CD'),
51=>Array('colorName'=>'salmon', 'hexValue'=>'#FA8072'),
52=>Array('colorName'=>'cadetblue', 'hexValue'=>'#5F9EA0'),
53=>Array('colorName'=>'gold', 'hexValue'=>'#FFD700'),
54=>Array('colorName'=>'mediumorchid', 'hexValue'=>'#BA55D3'),
55=>Array('colorName'=>'sandybrown', 'hexValue'=>'#F4A460'),
56=>Array('colorName'=>'chartreuse', 'hexValue'=>'#7FFF00'),
57=>Array('colorName'=>'goldenrod', 'hexValue'=>'#DAA520'),
58=>Array('colorName'=>'mediumpurple', 'hexValue'=>'#9370DB'),
59=>Array('colorName'=>'seagreen', 'hexValue'=>'#2E8B57'),
60=>Array('colorName'=>'chocolate', 'hexValue'=>'#D2691E'),
61=>Array('colorName'=>'gray', 'hexValue'=>'#808080'),
62=>Array('colorName'=>'mediumseagreen', 'hexValue'=>'#3CB371'),
63=>Array('colorName'=>'seashell', 'hexValue'=>'#FFF5EE'),
64=>Array('colorName'=>'coral', 'hexValue'=>'#FF7F50'),
65=>Array('colorName'=>'green', 'hexValue'=>'#008000'),
66=>Array('colorName'=>'mediumslateblue', 'hexValue'=>'#7B68EE'),
67=>Array('colorName'=>'sienna', 'hexValue'=>'#A0522D'),
68=>Array('colorName'=>'cornflowerblue', 'hexValue'=>'#6495ED'),
69=>Array('colorName'=>'greenyellow', 'hexValue'=>'#ADFF2F'),
70=>Array('colorName'=>'mediumspringgreen', 'hexValue'=>'#00FA9A'),
71=>Array('colorName'=>'silver', 'hexValue'=>'#C0C0C0'),
72=>Array('colorName'=>'cornsilk', 'hexValue'=>'#FFF8DC'),
73=>Array('colorName'=>'honeydew', 'hexValue'=>'#F0FFF0'),
74=>Array('colorName'=>'mediumturquoise', 'hexValue'=>'#48D1CC'),
75=>Array('colorName'=>'skyblue', 'hexValue'=>'#87CEEB'),
76=>Array('colorName'=>'crimson', 'hexValue'=>'#DC143C'),
77=>Array('colorName'=>'hotpink', 'hexValue'=>'#FF69B4'),
78=>Array('colorName'=>'mediumvioletred', 'hexValue'=>'#C71585'),
79=>Array('colorName'=>'slateblue', 'hexValue'=>'#6A5ACD'),
80=>Array('colorName'=>'cyan', 'hexValue'=>'#00FFFF'),
81=>Array('colorName'=>'indianred', 'hexValue'=>'#CD5C5C'),
82=>Array('colorName'=>'midnightblue', 'hexValue'=>'#191970'),
83=>Array('colorName'=>'slategray', 'hexValue'=>'#708090'),
84=>Array('colorName'=>'darkblue', 'hexValue'=>'#00008B'),
85=>Array('colorName'=>'indigo', 'hexValue'=>'#4B0082'),
86=>Array('colorName'=>'mintcream', 'hexValue'=>'#F5FFFA'),
87=>Array('colorName'=>'snow', 'hexValue'=>'#FFFAFA'),
88=>Array('colorName'=>'darkcyan', 'hexValue'=>'#008B8B'),
89=>Array('colorName'=>'ivory', 'hexValue'=>'#FFFFF0'),
90=>Array('colorName'=>'mistyrose', 'hexValue'=>'#FFE4E1'),
91=>Array('colorName'=>'springgreen', 'hexValue'=>'#00FF7F'),
92=>Array('colorName'=>'darkgoldenrod', 'hexValue'=>'#B8860B'),
93=>Array('colorName'=>'khaki', 'hexValue'=>'#F0E68C'),
94=>Array('colorName'=>'moccasin', 'hexValue'=>'#FFE4B5'),
95=>Array('colorName'=>'steelblue', 'hexValue'=>'#4682B4'),
96=>Array('colorName'=>'darkgray', 'hexValue'=>'#A9A9A9'),
97=>Array('colorName'=>'lavender', 'hexValue'=>'#E6E6FA'),
98=>Array('colorName'=>'navajowhite', 'hexValue'=>'#FFDEAD'),
99=>Array('colorName'=>'tan', 'hexValue'=>'#D2B48C'),
100=>Array('colorName'=>'darkgreen', 'hexValue'=>'#006400'),
101=>Array('colorName'=>'lavenderblush', 'hexValue'=>'#FFF0F5'),
102=>Array('colorName'=>'navy', 'hexValue'=>'#000080'),
103=>Array('colorName'=>'teal', 'hexValue'=>'#008080'),
104=>Array('colorName'=>'darkkhaki', 'hexValue'=>'#BDB76B'),
105=>Array('colorName'=>'lawngreen', 'hexValue'=>'#7CFC00'),
106=>Array('colorName'=>'oldlace', 'hexValue'=>'#FDF5E6'),
107=>Array('colorName'=>'thistle', 'hexValue'=>'#D8BFD8'),
108=>Array('colorName'=>'darkmagenta', 'hexValue'=>'#8B008B'),
109=>Array('colorName'=>'lemonchiffon', 'hexValue'=>'#FFFACD'),
110=>Array('colorName'=>'olive', 'hexValue'=>'#808000'),
111=>Array('colorName'=>'tomato', 'hexValue'=>'#FD6347'),
112=>Array('colorName'=>'darkolivegreen', 'hexValue'=>'#556B2F'),
113=>Array('colorName'=>'lightblue', 'hexValue'=>'#ADD8E6'),
114=>Array('colorName'=>'olivedrab', 'hexValue'=>'#6B8E23'),
115=>Array('colorName'=>'turquoise', 'hexValue'=>'#40E0D0'),
116=>Array('colorName'=>'darkorange', 'hexValue'=>'#FF8C00'),
117=>Array('colorName'=>'lightcoral', 'hexValue'=>'#F08080'),
118=>Array('colorName'=>'orange', 'hexValue'=>'#FFA500'),
119=>Array('colorName'=>'violet', 'hexValue'=>'#EE82EE'),
120=>Array('colorName'=>'darkorchid', 'hexValue'=>'#9932CC'),
121=>Array('colorName'=>'lightcyan', 'hexValue'=>'#E0FFFF'),
122=>Array('colorName'=>'orangered', 'hexValue'=>'#FF4500'),
123=>Array('colorName'=>'wheat', 'hexValue'=>'#F5DEB3'),
124=>Array('colorName'=>'darkred', 'hexValue'=>'#8B0000'),
125=>Array('colorName'=>'lightgoldenrodyellow', 'hexValue'=>'#FAFAD2'),
126=>Array('colorName'=>'orchid', 'hexValue'=>'#DA70D6'),
127=>Array('colorName'=>'white', 'hexValue'=>'#FFFFFF'),
128=>Array('colorName'=>'darksalmon', 'hexValue'=>'#E9967A'),
129=>Array('colorName'=>'lightgreen', 'hexValue'=>'#90EE90'),
130=>Array('colorName'=>'palegoldenrod', 'hexValue'=>'#EEE8AA'),
131=>Array('colorName'=>'whitesmoke', 'hexValue'=>'#F5F5F5'),
132=>Array('colorName'=>'darkseagreen', 'hexValue'=>'#8FBC8F'),
133=>Array('colorName'=>'lightgrey', 'hexValue'=>'#D3D3D3'),
134=>Array('colorName'=>'palegreen', 'hexValue'=>'#98FB98'),
135=>Array('colorName'=>'yellow', 'hexValue'=>'#FFFF00'),
136=>Array('colorName'=>'darkslateblue', 'hexValue'=>'#483D8B'),
137=>Array('colorName'=>'lightpink', 'hexValue'=>'#FFB6C1'),
138=>Array('colorName'=>'paleturquoise', 'hexValue'=>'#AFEEEE'),
139=>Array('colorName'=>'yellowgreen', 'hexValue'=>'#9ACD32'),
);
/**
* Function to get RGB value form its hex code
*
*
* @param $hexValue string - format #ff0067
* @return string - rgb value
*/
public function getRgbValuefromHex($hexValue) {
if($hexValue[0] == '#' && strlen(trim($hexValue))==7) {
$r = $hexValue[1].$hexValue[2];
$g = $hexValue[3].$hexValue[4];
$b = $hexValue[5].$hexValue[6];
return hexdec($r).",".hexdec($g).",".hexdec($b);
}
else {
echo "<b><font face='verdana' color='red' size='2'> ERROR: Invalid color Information. </font></b>";
return false;
}
}
/**
* Function to display the complete information of web safe colors
*
* @return array
*/
public function displayColorDatabase() {
echo "<table width='80%' align='center' cellpadding='2' cellspacing='0' border=0' ><tr style='background-color:blanchedalmond'> ";
echo "<td><b><font face='verdana' color='brown' size='2'> S No. </font></b></td>
<td><b><font face='verdana' color='black' size='2'> 'Color Name' </font></b></td>
<td><b><font face='verdana' color='green' size='2'> 'Hex Value' </font></b></td>
<td><b><font face='verdana' color='red' size='2'> 'RGB Value' </font></b></td>
<td><b><font face='verdana' color='blue' size='2'> 'COLOR' </font></b></td></tr> <tr><td colspan='5'><BR></td></tr>";
for($i=0; $i<count($this->webSafeColorDatabase); $i++) {
if($i%2 == 0) {
$bgColor ='lavender';
}
else {
$bgColor ='#FFFFFF';
}
echo "<tr style='background-color:$bgColor'>
<td><b><font face='verdana' color='brown' size='2'>". ($i+1) ."</font></b></td>
<td><b><font face='verdana' color='black' size='2'>". $this->webSafeColorDatabase[$i]['colorName'] ."</font></b></td>
<td><b><font face='verdana' color='green' size='2'>". $this->webSafeColorDatabase[$i]['hexValue'] ."</font></b></td>
<td><b><font face='verdana' color='red' size='2'>". $this->getRgbValuefromHex($this->webSafeColorDatabase[$i]['hexValue']) ."</font></b></td>
<td align='center' style='background-color:".$this->webSafeColorDatabase[$i]['colorName']."'></td> </tr>";
}
echo "</tr></table>";
}
/**
* Function to return the name of the web safe color
*
* @param $colorInfo string - could be the value of color in hexadecimal or in rgb
* usage getColorName('#FF0033')
* OR
* usage getColorName('255,23,56')
* @return string - name of the web safe color (if present in the above $webSafeColorDatabase) , false otherwise
*/
public function getColorName($colorInfo) {
// input check
if( trim($colorInfo[0]) != '#' && substr_count($colorInfo, ",") != 2 ) {
echo "<b><font face='verdana' color='red' size='2'> ERROR: Invalid color Information. </font></b>";
return false;
}
else{
if(trim($colorInfo[0]) == '#' && strlen(trim($colorInfo)) == 7) {
// the input color is in hexadecimal
for($i=0; $i<count($this->webSafeColorDatabase); $i++) {
if( strtolower(trim($this->webSafeColorDatabase[$i]['hexValue']))== strtolower(trim($colorInfo)) ) {
return $this->webSafeColorDatabase[$i]['colorName'];
}
}
}
else {
// the input color is in RGB
for($i=0; $i<count($this->webSafeColorDatabase); $i++) {
if( strtolower(trim($this->getRgbValuefromHex($this->webSafeColorDatabase[$i]['hexValue']))) == trim($colorInfo) ) {
return $this->webSafeColorDatabase[$i]['colorName'];
}
}
}
}
return false;
}
/**
* Function to return the hexadecimal value of the web safe color
*
* @param $colorInfo string - could be the value of color in rgb or name of the color (no spaces between the name)
* usage getHexValue('aliceblue')
* OR
* usage getHexValue('255,23,56')
* @return string - Hexadecimal value of the web safe color (if present in the above $webSafeColorDatabase) , false otherwise
*/
public function getHexValue($colorInfo) {
if(substr_count($colorInfo, ",") == 2) {
// the input color is in rgb
for($i=0; $i<count($this->webSafeColorDatabase); $i++) {
if( strtolower(trim($this->getRgbValuefromHex($this->webSafeColorDatabase[$i]['hexValue'])))== trim($colorInfo) ) {
return $this->webSafeColorDatabase[$i]['hexValue'];
}
}
}
else{
// the input is name of the color
for($i=0; $i<count($this->webSafeColorDatabase); $i++) {
if( strtolower(trim($this->webSafeColorDatabase[$i]['colorName']))== strtolower(trim($colorInfo)) ) {
return $this->webSafeColorDatabase[$i]['hexValue'];
}
}
}
return false;
}
/**
* Function to return the RGB value of the web safe color
*
* @param $colorInfo string - could be the value of color in hexadecimal or name of the color (no spaces between the name)
* usage getRgbValue('#ff0000')
* OR
* usage getRgbValue('255,23,56')
* @return string - RGB value of the web safe color (if present in the above $webSafeColorDatabase) , false otherwise
*/
public function getRgbValue($colorInfo) {
if(trim($colorInfo[0]) == '#' && strlen(trim($colorInfo))==7) {
// the input color is in rgb
for($i=0; $i<count($this->webSafeColorDatabase); $i++) {
if( strtolower(trim($this->webSafeColorDatabase[$i]['hexValue']))== trim($colorInfo) ) {
return $this->getRgbValuefromHex($this->webSafeColorDatabase[$i]['hexValue']);
}
}
}
else{
// the input is name of the color
for($i=0; $i<count($this->webSafeColorDatabase); $i++) {
if( strtolower(trim($this->webSafeColorDatabase[$i]['colorName']))== strtolower(trim($colorInfo)) ) {
return $this->getRgbValuefromHex($this->webSafeColorDatabase[$i]['hexValue']);
}
}
}
return false;
}
/**
* Function to check if the input color is web safe or not
*
* @param $colorInfo string - could be the value of color in hexadecimal/RGB or name of the color (no spaces between the name)
* usage isWebSafeColor('#ff0000')
* OR
* usage isWebSafeColor('red')
* OR
* usage isWebSafeColor('255,23,56')
*
* @return boolean - true if present in the above $webSafeColorDatabase , false otherwise
*/
public function isWebSafeColor($colorInfo) {
if( trim($colorInfo[0]) == '#' && strlen(trim($colorInfo))==7) {
//input color is in hexadecimal format
for($i=0; $i<count($this->webSafeColorDatabase); $i++) {
if( strtolower(trim($this->webSafeColorDatabase[$i]['hexValue']))== strtolower(trim($colorInfo)) ) {
return true;
}
}
}
elseif(substr_count($colorInfo, ",") == 2) {
//input color is in rgb format
for($i=0; $i<count($this->webSafeColorDatabase); $i++) {
if( strtolower(trim($this->getRgbValuefromHex($this->webSafeColorDatabase[$i]['hexValue'])))== trim($colorInfo) ) {
return true;
}
}
}
else {
//input is the name of the color
for($i=0; $i<count($this->webSafeColorDatabase); $i++) {
if( strtolower(trim($this->webSafeColorDatabase[$i]['colorName']))== strtolower(trim($colorInfo)) ) {
return true;
}
}
}
return false;
}
/**
* Fucntion to return closet color to main function
*
* @access private
*
* @param $colorInfo - string
*
* @return string
*/
private function returnClosestColor($colorInfo) {
if( strlen(trim($colorInfo)) =='') {
echo "<b><font face='verdana' color='red' size='2'> ERROR: Invalid color Information. </font></b>";
return false;
}
// no shortest distance found, yet
$temp_lev = 9999;
// loop through words to find the closest
for($i=0; $i<count($this->webSafeColorDatabase); $i++) {
$color = $this->webSafeColorDatabase[$i]['colorName'];
// calculate the distance between the input color,
// and the current color
$lev = levenshtein($colorInfo, $color);
// check for an exact match
if ($lev == 0) {
// closest color is this one (exact match)
$closest = $color;
$this->isExactMatch = 0;
// break out of the loop; we've found an exact match
break;
}
else {
if($lev<=$temp_lev) {
$temp_lev = $lev;
$closest = $color;
}
}
}
return $closest;
}
/**
* Function to return closest websafe color
*
* @param $colorInfo string- only the name of the color
*
* @return $string
*/
public function getClosestMatchingWebsafeColor($colorInfo) {
if( (strlen(trim($colorInfo))=='') || ( trim($colorInfo[0]) == '#' && strlen(trim($colorInfo)) == 7) || (substr_count($colorInfo, ",") == 2) ) {
echo "<b><font face='verdana' color='red' size='2'> ERROR: Invalid color Information. </font></b>";
return false;
}
else {
// color name
return $this->returnClosestColor($colorInfo);
}
return false;
}
}
?>
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