PHP implementation according to bank card number judgment Bank, PHP Bank card Judge Bank _php tutorial

PHP implementation according to bank card number judgment Bank, PHP bank card Judge Bank

banklist.php please download at the end of the article

Header (' Content-type:text/html;charset=utf-8 '); Require_once (' banklist.php '); function Bankinfo ($card, $bankList) {   $card _8 = substr ($card, 0, 8);   if (Isset ($bankList [$card _8]) {     echo $bankList [$card _8];     return;   }   $card _6 = substr ($card, 0, 6);   if (Isset ($bankList [$card _6]) {     echo $bankList [$card _6];     return;   }   $card _5 = substr ($card, 0, 5);   if (Isset ($bankList [$card _5]) {     echo $bankList [$card _5];     return;   }   $card _4 = substr ($card, 0, 4);   if (Isset ($bankList [$card _4]) {     echo $bankList [$card _4];     return;   }   Echo ' This card number information is not entered '; }  

banklist.php Download

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