PHP Chinese character validation code class function

<?php

002 Class Captcha

003 {

004 Private $_about = Array (

005 ' imageline ' =>8,//Line interference, normal for 0

006 ' Imagepixel ' =>300,//pixel interference, normal for 0

007 ' Location ' =>true,//font random position, false normal

008 ' bgcolor ' => ' #ffffff ',//background

009 ' TextColor ' => ',//text

010 ' borcolor ' => ' #e1e1e1 ',//border

011 ' linecolor ' => ' #dedede ',//Line

012 ' pixelcolor ' => ' #646464 '/pixel

013);

014

015/**

016 * Construction <span Class=t_tag onclick=tagshow (event) href= "TAG.PHP?NAME=%BA%AF%CA%FD" > Functions </SPAN>

017 */

018 Public Function __construct () {}

019

020/**

021 * Setcookie

022 *

023 * @param string $data write <span Class=t_tag onclick=tagshow (event) href= "TAG.PHP?NAME=%CA%FD%BE%DD" > Data </ Span>

024 */

025 Public Function Setcookie ($data)

026 {

027 if (Is_array ($data)) {

028 $string = ';

029 foreach ($data as $v) $string. = $v;

030 $data = $string;

031}

032 Setcookie (' Captcha ', $data, Time () +60, '/');

033}

034/**

035 * Setcaptcha

036 *

037 * Set Output <span Class=t_tag onclick=tagshow (event) href= "TAG.PHP?NAME=%D1%E9%D6%A4" > Validation </SPAN> Code

038 *

039 * @param integer $width width

040 * @param integer $height high

041 * @param integer $fontSize font size

042 * @param string $font font <span class=t_tag onclick=tagshow (event) href= "Tag.php?name=%ce%c4%bc%fe" > Files </ Span> position

043 * @param integer $length validation <span class=t_tag onclick=tagshow (event) href= "TAG.PHP?NAME=%D7%D6%B7%FB" > Characters </ Span> length

044 * @param integer $type verify character type

045 * 1: Only digits, 2: Only lowercase letters, 3: only capitals,

046 * 4: Lowercase alphanumeric mixed, 5: Uppercase and Digital mixed, 6: uppercase and lowercase numerals mixed, 7: Kanji

047 * @param array $about Verification code configuration

048 */

049 Public Function Setcaptcha ($width =80, $height =30, $fontSize =13, $font = ' Code.ttf ', $length =4, $type =3, $about =array ( ))

050 {

051 Is_array ($about) | | Exit (' parameter Error! ');

052 foreach ($about as $key => $value) {

053 if (array_key_exists ($key, $this->_about)) {

054 $this->_about[$key] = $value;

055}

056}

15V

058 Extract ($this->_about,extr_overwrite);

059 $im = Imagecreatetruecolor ($width, $height);

060//Background color

061 $bgC _arr = $this->getcolor ($bgColor);

062 $imgBgColor = imagecolorallocate ($im, $bgC _arr[0], $bgC _arr[1], $bgC _arr[2]);

063//Border color

064 $borC _arr = $this->getcolor ($borColor);

065 $imgBorderColor = imagecolorallocate ($im, $borC _arr[0], $borC _arr[1], $borC _arr[2]);

066//Fill

067 Imagefill ($im, 0,0, $imgBgColor);

068 Imagerectangle ($im, 0,0, $width-1, $height-1, $imgBorderColor);

16X

070//Draw Line

071 if ($imageLine) {

072//Line Color

073 $lineC _arr = $this->getcolor ($lineColor);

074 $imgLineColor = imagecolorallocate ($im, $lineC _arr[0], $lineC _arr[1], $lineC _arr[2]);

075 for ($i =0; $i < $imageLine; $i + +) {

076 Imageline ($im, 0,mt_rand (0, $height), $width, Mt_rand (0, $height), $imgLineColor);

077}

078}

079//Pixel interference

080 if ($imagePixel) {

081//Pixel color

082 $pixelC _arr = $this->getcolor ($pixelColor);

083 $imgPixelColor = Imagecolorallocate ($im, $pixelC _arr[0], $pixelC _arr[1], $pixelC _arr[2]);

084 for ($i =0; $i < $imagePixel; $i + +) {

085 Imagesetpixel ($im, Mt_rand (2, $width-2), Mt_rand (2, $height-2), $imgPixelColor);

086}

087}

088

089//Get string

090 if (! $text = $this->gettext ($type, $length)) exit (' The CAPTCHA does not find the specified character type! ');

091//Check font file

092 is_file ($font) | | Exit (' Authenticode did not find the specified font file! ');

093 $y = ceil ($height/2) +ceil ($fontSize/2) *0.9;

094 $pitch = ceil ($width/$length);

095 $text = Ctype_alnum ($text) $text: Str_split ($text, 3);

096 $pad = 0;

097 for ($i =0; $i < $length; $i + +) {

098 if (!empty ($textColor)) {

099//Text color

$txtC _arr = $this->getcolor ($textColor);

$imgTextColor = Imagecolorallocate ($im, $txtC _arr[0], $txtC _arr[1], $txtC _arr[2]);

102} else {

$imgTextColor = Imagecolorallocate ($im, Mt_rand (0,255), Mt_rand (0,255), Mt_rand (0,255));

104}

if (false = = $location) {

$fontSizePad = Ctype_alnum ($text [$i]) $fontSize *1.4: $fontSize *1.7;

$x = $pad + $fontSize + (Ceil ($pitch/2)-$fontSizePad);

108 Imagettftext ($im, $fontSize, 0, $x, $y, $imgTextColor, $font, $text [$i]);

109 $pad + + $pitch;

The. else {

$d = $pad + + $pitch;

112 $d + + $fontSize *0.5;

113 Imagettftext ($im, $fontSize, Mt_rand ( -20,20), Mt_rand ($d-= $pitch, $pad-$fontSize *1.4), $y, $imgTextColor, $font, $ text[$i]);

114}

115}

116//write to <span Class=t_tag onclick=tagshow (event) href= "Tag.php?name=session" >session</SPAN>

117 $this->setcookie ($text);

118 $this->getcaptcha ($im);

119}

120

121/**

122 * GetText

123 *

124 * Get string

125 *

126 * @param integer $type String type

127 * @param integer $length length

128 * @return string $result strings Result

129 */

130 Public Function GetText ($type, $length)

131 {

132 $result = ';

$range = Array ();

134 switch ($type) {

135 Case 1:

136 for ($i =0; $i < $length; $i + +) $result. = Mt_rand (0,9);

137 break;

138 Case 2:

139 $range = Range (' A ', ' Z ');

140 break;

Case 3:

$range = Range (' A ', ' Z ');

143 break;

144 Case 4:

145 $range = Array_merge (range (0,9), Range (' A ', ' Z '));

146 break;

147 Case 5:

148 $range = Array_merge (range (0,9), Range (' A ', ' Z '));

149 break;

Case 6:

151 $range = Array_merge (range (0,9), Range (' A ', ' Z '), Range (' A ', ' Z '));

152 break;

153 Case 7:

154/for ($i =0; $i < $length; $i + +) $result. = Iconv (' gb2312 ', ' Utf-8 ', Chr (rand (0XB0,0XF7)). Chr (rand (0XA1,0XFE));

$range = Array (

156 ' Tong ', ' Love ', ' Philip ', ' Can ', ' Day ', ' one ', ' new ', ' he ', ' policy ', ' rhyme ', ' Year ', ' Ming ', ' ritual ', ' Jay ', ' Ya ', ' poem ', ' endure ', ' son ',

157 ' good ', ' fast ', ' Le ', ' half ', ' Beauty ', ' worship ', ' light ', ' minister ', ' incense ', ' middle ', ' country ', ' open ', ' heart ', ' ah ', ' laugh ', ' figure ', ' Cheng ', ' Tiger '

158);

159 break;

160 Default:return false;

161}

162 if (!empty ($range)) {

163 Shuffle ($range);

164 $result = Mb_substr (Implode (', $range), 0, $length, ' utf-8 ');

165}

166 return $result;

167}

168

169/**

170 * GetColor

171 *

172 * hexadecimal color converted to decimal

173 */

174 Public Function GetColor ($string)

175 {

176 $string = Str_replace (' # ', ', ', $string);

177 if (!ctype_alnum ($string)) {

178 return false;

179}

180 $rgb _arr = Array ();

181 if (strlen ($string) = = 3) {

=0 for ($i; $i <3; $i + +) {

183 $rgb _arr[$i] = Hexdec (Str_repeat ($string {$i}, ' 2 '));

184}

185} else if (strlen ($string) = = 6) {

186 $colorSp = Str_split ($string, 2);

187 foreach ($colorSp as $v) {

188 $rgb _arr[] = Hexdec ($v);

189}

190} else {

191 return false;

192}

193 return $rgb _arr;

194}

195

196 Public Function Getcaptcha ($IM)

197 {

198 header (' content-type:image/gif ');

199 imagegif ($im);

Imagedestroy ($im);

201}

202}

203

204 $about = Array (

205 ' imageline ' =>0,//Line interference, normal for 0

206 ' Imagepixel ' =>300,//pixel interference, normal for 0

207 ' location ' =>false,//font random position, false normal

' bgcolor ' => ' #ffffff ',//Background color

209 ' TextColor ' => ',//text color, default random color

210 ' borcolor ' => ' #e1e1e1 ',//Border color

211 ' LineColor ' => ' #ff0000 ',//Line Color

212 ' pixelcolor ' => ' #a13e3e '//Pixel color

213);

214 error_reporting (0);

215 $a = new Captcha ();

216 $a->setcaptcha (100,30,13, ' Font.ttf ', 4,1, $about);