[ '+' => 'plus', '-' => 'minus' , '*' => 'times' ], 'de' => [ '+' => 'plus', '-' => 'minus' , '*' => 'mal' ], 'fr' => [ '+' => 'plus', '-' => 'temps' , '*' => 'moins' ], 'gr' => [ '+' => 'συν' , '-' => 'μειωμένους', '*' => 'chrónous' ] ]; private $numberWords = [ 'en' => [ 'one' , 'two' , 'three', 'for' , 'fife' , 'six' , 'seven' , 'eight', 'nine' , 'ten' ], 'de' => [ 'eins', 'zwei', 'drei' , 'vier' , 'fünf' , 'sechs', 'sieben', 'acht' , 'neun' , 'zehn' ], 'fr' => [ 'un' , 'deux', 'trois', 'quatre' , 'cinq' , 'six' , 'sept' , 'huit' , 'neuf' , 'dix' ], 'gr' => [ 'ένα' , 'δύο' , 'τρία' , 'τέσσερα', 'πέντε', 'έξι' , 'επτά' , 'οκτώ' , 'εννέα', 'δέκα' ] ]; public $buttonMessage = [ 'en' => 'solve', 'de' => 'lösen', 'fr' => 'desserrer', 'gr' => 'λύσει' ]; function __construct( $lang = 'en' ) { if ( $this -> secret == 'ChangeThis!' ) { trigger_error( 'You have to change the secret in „' . __FILE__ . '“ line 3.', E_USER_ERROR ); } $lang = trim( $lang ); $this -> setLanguage( $lang ); } function setLanguage( $lang ) { if ( ! isset( $this -> opsWords[ $lang ] ) or ! isset( $this -> numberWords[ $lang ] ) or ! isset( $this -> buttonMessage[ $lang ] ) ) { trigger_error( 'The language „' . $lang . '“ is not enabled. In this case i using „en“. Show the file „' . __FILE__ . '“ and edit lines 12:34', E_USER_NOTICE ); $lang = 'en'; } $this -> lang = $lang; $z1 = random_int( 0, count( $this->numberWords[ $lang ] ) - 1 ); $z2 = random_int( 0, count( $this->numberWords[ $lang ] ) - 1 ); $op = random_int( 0, 2 ); switch ( $this -> ops[ $op ] ) { case '+': $erg = $z1 + $z2 + 2; break; case '-': $erg = $z1 - $z2; break; case '*': $erg = ( $z1 + 1 ) * ( $z2 + 1 ); break; } $this->HashedAnswer = $this -> mkHash( $erg ); $this-> Question = $this -> numberWords[ $lang ] [ $z1 ] . ' ' . $this -> opsWords[ $lang ][ $this -> ops[ $op ] ] . ' ' . $this -> numberWords[ $lang ][ $z2 ]; } function mkHash( $s ) { return md5( ( $this -> secret . trim( $s ) ) ); } function getQuestion() { return $this -> Question; } function getHashedAnswer() { return $this -> HashedAnswer; } function validateAnswer( $answer, $hash ) { $sHashed = $this -> mkHash( $answer ); $hash = trim ( $hash ); return $sHashed == $hash; } function getForm( $method = false, $target = false ) { $r = ''; if ( $target ) { $target = " target='{$target}'"; } if ( $method and ( strtoupper( $method ) == 'POST' or strtoupper( $method ) == 'GET' ) ) { $r .= "

" . PHP_EOL; } $r .= ""; $r .= "" . $this -> getQuestion() . " ist"; if ( $method and ( strtoupper( $method ) == 'POST' or strtoupper( $method ) == 'GET' ) ) { $r .= "" . $this -> buttonMessage[ $this -> lang ] . "" . PHP_EOL; $r .= "

" . PHP_EOL; } return $r; } function printForm( $method = false, $target = false ) { echo $this -> getForm( $method, $target ); } } /* ** Usage and examples:** */ /* require_once 'ftxCaptcha.php'; $captcha = new ftxCaptcha(); $captcha -> getForm( 'POST' ); echo PHP_EOL; $captcha = new ftxCaptcha( 'de' ); $captcha -> getForm(false); echo PHP_EOL; $captcha -> setLanguage ( 'fr' ); $captcha -> getForm(false); echo PHP_EOL; $captcha -> setLanguage ( 'en' ); $captcha -> getForm( false ); echo PHP_EOL; #*/ /* ** Usage ofe the returns * * require_once 'ftxCaptcha.php'; * $captcha = new ftxCaptcha(); * if ( $captcha -> validateAnswer( $_POST['ftxAnswer'], $_POST['hash'] ) ) { ... } */