PHP验证信用卡卡号是否正确函数
- WBOYOriginal
- 2016-06-06 20:03:541134browse
这篇文章主要介绍了PHP验证信用卡卡号是否正确函数,本文直接给出实现代码,需要的朋友可以参考下
可以使用以下PHP函数，，验证一个卡号是否是信用卡：
function validateCard ( $cardnumber ) { $cardnumber = preg_replace ( " /\D|\s/ " , "" , $cardnumber ) ; # strip any non-digits $cardlength = strlen ( $cardnumber ) ; if ( $cardlength != 0 ) { $parity = $cardlength % 2 ; $sum = 0 ; for ( $i = 0 ; $i 9 ) $digit = $digit - 9 ; $sum = $sum + $digit ; } $valid = ( $sum % 10 == 0 ) ; return $valid ; } return false ; }
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