PHP | Pixel Envision Ltd.

PHP Credit Card Validation class using Mod 10 (Luhn) + more!

February 17, 2012 PHP, Programming

Here is another PHP code snippet from my library. This PHP class allows you to validate credit card information before processing it further. Doing all possible off-line checks before sending it to he credit card gateway will help you save time & money…

If the card is valid it will return cleaned & formatted card number along with the card type (Visa, Mastercard, Amex, Dinners, Discover, JCB & Maestro).

Besides regular checks, validates the card number against Mod 10 (Luhn) as well as know test card numbers…

Features

Checks if the card number, expiration date & validation numbers are valid.
Checks if the card is expired
Finds & returns the card type.
Checks against the known test card numbers.
Validates the card number using Mod 10 algorithm.

Usage Sample

<?php
require ('mod10.php');
$CARDTYPE = $ErrArr = NULL;

$cc = new CCVal($_POST["card_number"], $_POST["card_expire_month"], $_POST["card_expire_year"], $_POST["card_cvv2"]);

$cstatus = $cc->IsValid();

if ($cstatus[0] == "valid")
{
    $CARDTYPE = $cstatus[1];
    $_POST["card_number"] = $cstatus[2];
    $_POST["card_cvv2"] = $cstatus[3];
}
else
{
    $ErrArr = $cstatus;
}
?>

<?php

require ('mod10.php');

$CARDTYPE = $ErrArr = NULL;

$cc = new CCVal($_POST["card_number"], $_POST["card_expire_month"], $_POST["card_expire_year"], $_POST["card_cvv2"]);

$cstatus = $cc->IsValid();

if ($cstatus[0] == "valid")

{

$CARDTYPE = $cstatus[1];

$_POST["card_number"] = $cstatus[2];

$_POST["card_cvv2"] = $cstatus[3];

}

else

{

$ErrArr = $cstatus;

}

Download

Download PHP code snippet *UPDATED FOR AMEX CVV FIX
Code is PHP5 compatible but it should also work on PHP4 (Untested)

License

This code is free to use, distribute, modify and study. When referencing please link back to this website / post in any way e.g. direct link, credits etc. If you find this useful, please leave a comment and share using the buttons below!

<?php class CCVal
{
    var $__ccType = '';
    var $__ccNum = '';
    var $__ccExpM = 0;
    var $__ccExpY = 0;
    var $__ccCVV = '';
    function CCVal($num, $expm, $expy, $cvv)
    {
        if (!empty($num))
        {
            $cardNumber = ereg_replace("[^0-9]", "", $num);
            if (!empty($cardNumber))
            {
                $this - &gt;
                __ccNum = $cardNumber;
            }
        }

        if (!empty($cvv))
        {
            $cardCVV = ereg_replace("[^0-9]", "", $cvv);
            if (!empty($cardCVV))
            {
                $this - &gt;
                __ccCVV = $cardCVV;
            }
        }

        if (!is_numeric($expm) || $expm & lt;
        1 || $expm & gt;
        12)
        {
            $this - &gt;
            __ccExpM = NULL;
        }
        else
        {
            $this - &gt;
            __ccExpM = $expm;
        }

        $currentYear = date('Y');
        settype($currentYear, 'integer');
        $expy = $expy + 2000;
        if (!is_numeric($expy) || $expy & lt;
        $currentYear || $expy & gt;
        $currentYear + 15)
        {
            $this - &gt;
            __ccExpY = NULL;
        }
        else
        {
            $this - &gt;
            __ccExpY = $expy;
        }

        if (ereg("^5[1-5][0-9]{14}$", $this - &gt;
        __ccNum))
        {
            $this - &gt;
            __ccType = MASTERCARD;
        }
        elseif (ereg("^4[0-9]{12}([0-9]{3})?$", $this - &gt;
        __ccNum))
        {
            $this - &gt;
            __ccType = VISA;
        }
        elseif (ereg("^3[47][0-9]{13}$", $this - &gt;
        __ccNum))
        {
            $this - &gt;
            __ccType = AMEX;
        }
        elseif (ereg("^3(0[0-5]|[68][0-9])[0-9]{11}$", $this - &gt;
        __ccNum))
        {
            $this - &gt;
            __ccType = DINNERS;
        }
        elseif (ereg("^6011[0-9]{12}$", $this - &gt;
        __ccNum))
        {
            $this - &gt;
            __ccType = DISCOVER;
        }
        elseif (ereg("^(3[0-9]{4}|2131|1800)[0-9]{11}$", $this - &gt;
        __ccNum))
        {
            $this - &gt;
            __ccType = JCB;
        }
        elseif (ereg("^(5[06-8]|6)[0-9]{10,17}$", $this - &gt;
        __ccNum))
        {
            $this - &gt;
            __ccType = MAESTRO;
        }
        else
        {
            $this - &gt;
            __ccType = UNKNOWN;
        }
    }

    function IsValid()
    {

        $validFormat = false;
        $validExp = false;
        $passCheck = false;
        $validCVV = false;
        $testCard = false;

        switch ($this - &gt;
        __ccType)
        {
            case MASTERCARD:
                $validFormat = true;
            break;
            case VISA:
                $validFormat = true;
            break;
            case AMEX:
                $validFormat = true;
            break;
            case DISCOVER:
                $validFormat = true;
            break;
            case DINNERS:
                $validFormat = true;
            break;
            case JCB:
                $validFormat = true;
            break;
            case MAESTRO:
                $validFormat = true;
            break;
            default:

                $validFormat = false;
        }

        $cardExpM = $this - &gt;
        __ccExpM;
        $cardExpY = $this - &gt;
        __ccExpY;

        if ($cardExpM & amp; & amp;
        $cardExpY & amp; & amp;
        date('Ym') & lt; = $cardExpY . $cardExpM)
        {
            $validExp = true;
        }
        $cardCVV = $this - &gt;
        __ccCVV;

        if ($cardCVV & amp; & amp;
        (strlen($cardCVV) == 3 & amp; & amp;
        $this - &gt;
        __ccType != AMEX))
        {
            $validCVV = true;
        }
        elseif ($cardCVV & amp; & amp;
        (strlen($cardCVV) == 4 & amp; & amp;
        $this - &gt;
        __ccType == AMEX))
        {
            $validCVV = true;
        }

        $cardNumber = strrev($this - &gt;
        __ccNum);
        $numSum = 0;

        for ($i = 0;$i & lt;strlen($cardNumber);$i++)
        {
            $currentNum = substr($cardNumber, $i, 1);
            if ($i % 2 == 1)
            {
                $currentNum *= 2;
            }
            if ($currentNum & gt;
            9)
            {
                $firstNum = $currentNum % 10;
                $secondNum = ($currentNum - $firstNum) / 10;
                $currentNum = $firstNum + $secondNum;
            }

            $numSum += $currentNum;
        }

        $passCheck = ($numSum % 10 == 0);

        $testCard = in_array($this - &gt;
        __ccNum, array(
            '340000000000009',
            '341111111111111',
            '343434343434343',
            '346827630435344',
            '370000000000002',
            '370000200000000',
            '370407269909809',
            '370556019309221',
            '371449635398431',
            '374200000000004',
            '376462280921451',
            '377752749896404',
            '378282246310005',
            '378734493671000',
            '30000000000004',
            '30569309025904',
            '5019717010103742',
            '30204169322643',
            '30218047196557',
            '30221511563252',
            '36000000000008',
            '36148900647913',
            '36700102000000',
            '38000000000006',
            '38520000023237',
            '6011000000000004',
            '6011000000000012',
            '6011000400000000',
            '6011000990139424',
            '6011111111111117',
            '6011153216371980',
            '6011601160116611',
            '6011687482564166',
            '6011814836905651',
            '201400000000009',
            '201481123699422',
            '214925980592653',
            '214983972181233',
            '180001638277392',
            '180040153546898',
            '180058601526635',
            '3528000700000000',
            '3528723740022896',
            '3530111333300000',
            '3566002020360505',
            '3569990000000009',
            '630495060000000000',
            '6304900017740292441',
            '6333333333333333336',
            '5100080000000000',
            '5105105105105100',
            '5111111111111118',
            '5123619745395853',
            '5138495125550554',
            '5274576394259961',
            '5301745529138831',
            '5311531286000465',
            '5364587011785834',
            '5404000000000001',
            '5424000000000015',
            '5431111111111111',
            '5454545454545454',
            '5459886265631843',
            '5460506048039935',
            '5500000000000004',
            '5500939178004613',
            '5555555555554444',
            '5565552064481449',
            '5597507644910558',
            '6334580500000000',
            '6334900000000005',
            '633473060000000000',
            '6767622222222222222',
            '6767676767676767671',
            '5641820000000005',
            '6331101999990016',
            '6759649826438453',
            '4007000000027',
            '4012888818888',
            '4024007127653',
            '4222222222222',
            '4556069275201',
            '4556381812806',
            '4911830000000',
            '4916183935082',
            '4916603452528',
            '4929000000006',
            '4005550000000019',
            '4012888888881881',
            '4111111111111111',
            '4444333322221111',
            '4539105011539664',
            '4544182174537267',
            '4716914706534228',
            '4916541713757159',
            '4916615639346972',
            '4917610000000000',
            '4406080400000000',
            '4462000000000003',
            '4462030000000000',
            '4917300000000008',
            '4917300800000000',
            '4484070000000000',
            '4485680502719433'
        ));

        if ($validFormat & amp; & amp;
        $validExp & amp; & amp;
        $validCVV & amp; & amp;
        $passCheck & amp; & amp;
        !$testCard)
        {
            return array(
                "valid",
                $this - &gt;
                __ccType,
                $this - &gt;
                __ccNum,
                $this - &gt;
                __ccCVV
            );
        }
        else
        {
            $ERR = NULL;
            if (!$validFormat || !$passCheck) $ERR[] = "Invalid card number";
            if (!$validCVV) $ERR[] = "Invalid CVV2/CVC2 Number";
            if (!$validExp) $ERR[] = "Credit card has been expired";
            if ($testCard) $ERR[] = "Reserved card number";
            return $ERR;
        }
    }
}
?>

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

<?php class CCVal

{

var $__ccType = '';

var $__ccNum = '';

var $__ccExpM = 0;

var $__ccExpY = 0;

var $__ccCVV = '';

function CCVal($num, $expm, $expy, $cvv)

{

if (!empty($num))

{

$cardNumber = ereg_replace("[^0-9]", "", $num);

if (!empty($cardNumber))

{

$this - >

__ccNum = $cardNumber;

}

if (!empty($cvv))

{

$cardCVV = ereg_replace("[^0-9]", "", $cvv);

if (!empty($cardCVV))

{

$this - >

__ccCVV = $cardCVV;

}

if (!is_numeric($expm) || $expm & lt;

1 || $expm & gt;

12)

{

$this - >

__ccExpM = NULL;

}

else

{

$this - >

__ccExpM = $expm;

}

$currentYear = date('Y');

settype($currentYear, 'integer');

$expy = $expy + 2000;

if (!is_numeric($expy) || $expy & lt;

$currentYear || $expy & gt;

$currentYear + 15)

{

$this - >

__ccExpY = NULL;

}

else

{

$this - >

__ccExpY = $expy;

}

if (ereg("^5[1-5][0-9]{14}$", $this - >

__ccNum))

{

$this - >

__ccType = MASTERCARD;

}

elseif (ereg("^4[0-9]{12}([0-9]{3})?$", $this - >

__ccNum))

{

$this - >

__ccType = VISA;

}

elseif (ereg("^3[47][0-9]{13}$", $this - >

__ccNum))

{

$this - >

__ccType = AMEX;

}

elseif (ereg("^3(0[0-5]|[68][0-9])[0-9]{11}$", $this - >

__ccNum))

{

$this - >

__ccType = DINNERS;

}

elseif (ereg("^6011[0-9]{12}$", $this - >

__ccNum))

{

$this - >

__ccType = DISCOVER;

}

elseif (ereg("^(3[0-9]{4}|2131|1800)[0-9]{11}$", $this - >

__ccNum))

{

$this - >

__ccType = JCB;

}

elseif (ereg("^(5[06-8]|6)[0-9]{10,17}$", $this - >

__ccNum))

{

$this - >

__ccType = MAESTRO;

}

else

{

$this - >

__ccType = UNKNOWN;

}

function IsValid()

{

$validFormat = false;

$validExp = false;

$passCheck = false;

$validCVV = false;

$testCard = false;

switch ($this - >

__ccType)

{

case MASTERCARD:

$validFormat = true;

break;

case VISA:

$validFormat = true;

break;

case AMEX:

$validFormat = true;

break;

case DISCOVER:

$validFormat = true;

break;

case DINNERS:

$validFormat = true;

break;

case JCB:

$validFormat = true;

break;

case MAESTRO:

$validFormat = true;

break;

default:

$validFormat = false;

}

$cardExpM = $this - >

__ccExpM;

$cardExpY = $this - >

__ccExpY;

if ($cardExpM & amp; & amp;

$cardExpY & amp; & amp;

date('Ym') & lt; = $cardExpY . $cardExpM)

{

$validExp = true;

}

$cardCVV = $this - >

__ccCVV;

if ($cardCVV & amp; & amp;

(strlen($cardCVV) == 3 & amp; & amp;

$this - >

__ccType != AMEX))

{

$validCVV = true;

}

elseif ($cardCVV & amp; & amp;

(strlen($cardCVV) == 4 & amp; & amp;

$this - >

__ccType == AMEX))

{

$validCVV = true;

}

$cardNumber = strrev($this - >

__ccNum);

$numSum = 0;

for ($i = 0;$i & lt;strlen($cardNumber);$i++)

{

$currentNum = substr($cardNumber, $i, 1);

if ($i % 2 == 1)

{

$currentNum *= 2;

}

if ($currentNum & gt;

{

$firstNum = $currentNum % 10;

$secondNum = ($currentNum - $firstNum) / 10;

$currentNum = $firstNum + $secondNum;

}

$numSum += $currentNum;

}

$passCheck = ($numSum % 10 == 0);

$testCard = in_array($this - >

__ccNum, array(

'340000000000009',

'341111111111111',

'343434343434343',

'346827630435344',

'370000000000002',

'370000200000000',

'370407269909809',

'370556019309221',

'371449635398431',

'374200000000004',

'376462280921451',

'377752749896404',

'378282246310005',

'378734493671000',

'30000000000004',

'30569309025904',

'5019717010103742',

'30204169322643',

'30218047196557',

'30221511563252',

'36000000000008',

'36148900647913',

'36700102000000',

'38000000000006',

'38520000023237',

'6011000000000004',

'6011000000000012',

'6011000400000000',

'6011000990139424',

'6011111111111117',

'6011153216371980',

'6011601160116611',

'6011687482564166',

'6011814836905651',

'201400000000009',

'201481123699422',

'214925980592653',

'214983972181233',

'180001638277392',

'180040153546898',

'180058601526635',

'3528000700000000',

'3528723740022896',

'3530111333300000',

'3566002020360505',

'3569990000000009',

'630495060000000000',

'6304900017740292441',

'6333333333333333336',

'5100080000000000',

'5105105105105100',

'5111111111111118',

'5123619745395853',

'5138495125550554',

'5274576394259961',

'5301745529138831',

'5311531286000465',

'5364587011785834',

'5404000000000001',

'5424000000000015',

'5431111111111111',

'5454545454545454',

'5459886265631843',

'5460506048039935',

'5500000000000004',

'5500939178004613',

'5555555555554444',

'5565552064481449',

'5597507644910558',

'6334580500000000',

'6334900000000005',

'633473060000000000',

'6767622222222222222',

'6767676767676767671',

'5641820000000005',

'6331101999990016',

'6759649826438453',

'4007000000027',

'4012888818888',

'4024007127653',

'4222222222222',

'4556069275201',

'4556381812806',

'4911830000000',

'4916183935082',

'4916603452528',

'4929000000006',

'4005550000000019',

'4012888888881881',

'4111111111111111',

'4444333322221111',

'4539105011539664',

'4544182174537267',

'4716914706534228',

'4916541713757159',

'4916615639346972',

'4917610000000000',

'4406080400000000',

'4462000000000003',

'4462030000000000',

'4917300000000008',

'4917300800000000',

'4484070000000000',

'4485680502719433'

));

if ($validFormat & amp; & amp;

$validExp & amp; & amp;

$validCVV & amp; & amp;

$passCheck & amp; & amp;

!$testCard)

{

return array(

"valid",

$this - >

__ccType,

$this - >

__ccNum,

$this - >

__ccCVV

);

}

else

{

$ERR = NULL;

if (!$validFormat || !$passCheck) $ERR[] = "Invalid card number";

if (!$validCVV) $ERR[] = "Invalid CVV2/CVC2 Number";

if (!$validExp) $ERR[] = "Credit card has been expired";

if ($testCard) $ERR[] = "Reserved card number";

return $ERR;

}

How I integrated osTicket to WordPress

September 7, 2011 PHP, Tips & Tricks

I’ve been looking for ways to provide a proper customer support for our website & products. Of course, just giving out your support email could also do it, but I wanted to have centralized on-line solution which makes things easier on both sides of a support request.

After looking for options (of course there are better paid alternatives), I have decided to use osTicket, which is a widely-used open source support ticket system. osTicket also supports email piping, so customers can submit new support request simply by sending an email to us. Email piping support was one of the key factors for my decision.

osTicket Bugs & Fixes

While working on the integration, I’ve noticed few bugs in the osTicket (v1.6.0 Stable) that needs to be fixed for a proper operation.

Captcha Image Problem

After the installation & setup of osTicket I have noticed captcha images are not shown properly. Most of the major browsers were failing to show captcha image by displaying the red X instead. In order to fix that problem you have to edit following file located in “include” subfolder.

class.captcha.php

Edit that file and look for the line #48 and change it as follows:

//Original
Header("(captcha-content-type:) image/png");

//Fixed
Header("Content-Type: image/png");

//Original

Header("(captcha-content-type:) image/png");

//Fixed

Header("Content-Type: image/png");

Captcha Validation Problem

When trying out the system, I have noticed submitting a new ticket is not possible for logged in users. Captcha image is not shown for logged in users (which is a proper thing to do) and when the new ticket is submitted, validation fails. In order to fix that problem you have to edit following file located in the root folder. Thanks to rayflexcom @ osTicket forum for the original fix.

open.php

Edit that file and look for the line #23 and change it as follows:

//Original
if (!$thisuser && $cfg->enableCaptcha())
{
    if (!$_POST['captcha']) $errors['captcha'] = 'Enter text shown on the image';
    elseif (strcmp($_SESSION['captcha'], md5($_POST['captcha']))) $errors['captcha'] = 'Invalid - try again!';
}

//Fixed
if ($thisclient && $thisclient->getId() && $thisclient->isValid())
{
}
else
{
    if (!$thisuser && $cfg->enableCaptcha())
    {
        if (!$_POST['captcha']) $errors['captcha'] = 'Enter text shown on the image';
        elseif (strcmp($_SESSION['captcha'], md5($_POST['captcha']))) $errors['captcha'] = 'Invalid - try again!';
    }
}

//Original

if (!$thisuser && $cfg->enableCaptcha())

{

if (!$_POST['captcha']) $errors['captcha'] = 'Enter text shown on the image';

elseif (strcmp($_SESSION['captcha'], md5($_POST['captcha']))) $errors['captcha'] = 'Invalid - try again!';

}

//Fixed

if ($thisclient && $thisclient->getId() && $thisclient->isValid())

{

}

else

{

if (!$thisuser && $cfg->enableCaptcha())

{

if (!$_POST['captcha']) $errors['captcha'] = 'Enter text shown on the image';

elseif (strcmp($_SESSION['captcha'], md5($_POST['captcha']))) $errors['captcha'] = 'Invalid - try again!';

}

Embed osTicket to your WordPress Template

Initial integration is fairly easy, but to fully embed it into your template you should edit the html/css code in php files.

Base Setup

Locate the following file located in the root folder. This is a bit different than the other methods you can find on internet.

First of all, it checks for the current folder. If the request is coming from the osTicket’s default admin folder (scp) it won’t load the WordPress template. Without that line, osTicket admin pages will be broken hybrid of it’s own design and your template.

Second, if you are using WordPress permalinks like I do, sub-pages (contact/index.php, contact/open.php, etc.) will return header section of your WordPress 404 page. osTicket will work but that will not be very SEO friendly. Just change “/contact/” to match your setup (osticket, support, etc.)

main.inc.php

Edit that file and look for the line #99 (with the other includes and requires which you can find under the line that reads “#include required files”) and add the following code:

//Original
if (!strpos($_SERVER["SCRIPT_FILENAME"], "/scp/"))
{
    $_SERVER["REQUEST_URI"] = "/contact/";
    include (ROOT_DIR . '../wp-blog-header.php');
}

//Original

if (!strpos($_SERVER["SCRIPT_FILENAME"], "/scp/"))

{

$_SERVER["REQUEST_URI"] = "/contact/";

include (ROOT_DIR . '../wp-blog-header.php');

}

Template Integration

Edit following files located in the “include/client/” subfolder.

header.inc.php
footer.inc.php

Edit both files and change them as follows:

//header.inc.php
//Add this to the top of the file
get_header();
//Keep the original html menu code starting with <div id="container">
//footer.inc.php
//Add this after the closing div tag for container </div>
get_footer();

//header.inc.php

//Add this to the top of the file

get_header();

//Keep the original html menu code starting with <div id="container">

//footer.inc.php

//Add this after the closing div tag for container </div>

get_footer();

For rest of the changes you should check the files on root folder & “include/client/” folder and edit html/css code to match your template.

You can see the live version of my integration by visiting our “support” page.

If you find this useful, please leave a comment and share using the buttons below!

12 3 4 »

Tag: PHP

PHP Credit Card Validation class using Mod 10 (Luhn) + more!

Features

Usage Sample

Download

License

How I integrated osTicket to WordPress

osTicket Bugs & Fixes

Captcha Image Problem

Captcha Validation Problem

Embed osTicket to your WordPress Template

Base Setup

Template Integration