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| <?php
function chr_enc( $id ) {
$c = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$id = (string)$id;
for( $i = 0; $i < strlen( $id ); $i++ ) {
$x .= $id{$i};
if( $x > 9 && $x <= ( strlen( $c ) + 9 ) ) {
$n .= $c{$x-10};
$x = '';
}
elseif( $x > strlen( $c ) + 10 || $x == '0' || $i == ( strlen( $id ) - 1 ) ) {
$n .= $x;
$x = '';
}
}
return $n;
}
function chr_dec( $id ) {
$c = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
for( $i = 0; $i < strlen( $id ); $i++ ) {
$n .= ( !is_numeric( $id{$i} ) ) ? ( strpos( $c, $id{$i} ) + 10 ) : $id{$i};
}
return $n;
}
?>
|