Anti SPAM: PHP compare similar string/text (with sorting)

PHP::similar_text will be defeated by shuffling the text sequence,
this function try to sort before compare similar string.

Note: This only considers "\n"(LF) as token,
you could add more delimiter/separator. (e.g. "space", "period")

代碼:







function compare_similar_str($var_1, $var_2)


{


    $a1 = array();


    $a2 = array();


    $percent = 0;





    // You could add more delimiter/separators to fit your need


    $a1 = explode("\n", str_replace(' ', '', $var_1));


    $a2 = explode("\n", str_replace(' ', '', $var_2));





    sort($a1);


    sort($a2);





    $var_1 = implode('', $a1);


    $var_2 = implode('', $a2);





    similar_text($var_1, $var_2, $percent);





    return intval($percent);


}

________________

美術插畫設計案子報價系統 v0.1 Beta
爪哇禾雀

Type

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暱稱: Type
註冊: 2002-11-30
發表: 11396
來自: vovo2000.com
Ｖ幣: 904860

Re: Anti SPAM: PHP compare similar string/text (with sorting) 2014-11-07 14:26

/ / /

PHP: remove_symbols

This co-works with compare_similar_str() to achieve preliminary anti-spam
代碼:




/*


 * Replace symbols --> compare to achieve preliminary spam-proof


 */


function remove_symbols($this_str)


{


    $symbols = array('‘','’','：','，','；','。',',','"',';','、','～','＠','＃','＄','％','︿','＆','＊',


            '/','!','@','#','$','%',':','^','&','*','(',')','-','_','+','=','{','[','}',']','?',


            '<','>','~', "\n", '\\',


            '╳','○','☆','★','□','■','●','【','】','「','」','『','』','〈','〉',


            '【','】','「','」','『','』','〈','〉','《','》','〔','〕','｛','｝','↑','↓','←','→','↖','↗','↙','↘','╳','○','☆',


            '☻','☺','♠','♣','♥','♦','♪','♀','♂','㊣', "'", ' ',


            );





    $test = str_replace($symbols, '', $this_str);


    return $test;


}

________________

美術插畫設計案子報價系統 v0.1 Beta
爪哇禾雀

Type

› 繪圖畫廊 › 設計藝廊
› 攝影相簿 › 留言板
› 最愛收藏 › 分類標籤
暱稱: Type
註冊: 2002-11-30
發表: 11396
來自: vovo2000.com
Ｖ幣: 904860

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Anti SPAM: PHP compare similar string/text (with sorting)

PHP: remove_symbols

Anti SPAM: PHP compare similar string/text (with sorting)