Local Math Captcha Hack - irmtfan -
http://www.xoops.org -
http://www.xoops.ir===========================
This is a very simple hack to change the XOOPS math captcha from figures to local words to provide more protection against spams.
Example: {3} + {4} = ? will be changed to {three} + {four} = ? in english
This hack had been introduced about one year ago in XOOPS255 persian release and was completely effective in persian websites. eg: I had not one single spam in my website for more than a year while previously I had 5 or 6 daily spams.
I hope this hack will be useful in other local communities and even english websites.
Please try it and report the result in xoops.org forums.
Install
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Just copy 2 files in this package
1- ./htdocs/class/captcha/text.php
2- ./htdocs/language/english/locale.php
Note:
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In XOOPS255 the captcha is set to "image" by default. You should change the captcha mode to "text" in XOOPS255/class/captcha/config.php
'mode' => 'text', // default mode, you can choose 'text', 'image', 'recaptcha'(requires api key)
You can back to old figures by changing the setting in ./htdocs/language/english/locale.php
define("_NUM_TYPE","word"); // you can choose "figure","word","image"
]
Translation:
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You can implement this hack for your own language by:
1- Copying ./htdocs/language/english/locale.php into ./htdocs/language/YOUR_LANG/locale.php
2- Translate figures to your own language (currently you only need to translate 1-9):
$_numWords = array( '0'=> '' ,
'1'=> 'one' ,
'2'=> 'two' ,
'3' => 'three',
'4' => 'four',
'5' => 'five',
'6' => 'six',
'7' => 'seven',
'8' => 'eight',
'9' => 'nine',
'10' => 'ten',
'11' => 'eleven',
'12' => 'twelve',
'13' => 'thirteen',
'14' => 'fouteen',
'15' => 'fifteen',
'16' => 'sixteen',
'17' => 'seventeen',
'18' => 'eighteen',
'19' => 'nineteen',
'20' => 'twenty',
'30' => 'thirty',
'40' => 'fourty',
'50' => 'fifty',
'60' => 'sixty',
'70' => 'seventy',
'80' => 'eighty',
'90' => 'ninty',
'100' => 'hundred &',
'1000' => 'thousand &',
'1000000' => 'million',
'1000000000' => 'billion');
TO DO:
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show numbers as figure images.
Download:
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http://www.jadoogaran.org/test255/local_math_captcha_hack_255_256.zip
