<html><head><title>進位轉換器</title><?php$n1=$n2="";if($_POST){ $n1=$_POST['n1']; $trans=$_POST['trans']; if($trans=='1'){ $n2=decbin((int)$n1); }elseif($trans=='2'){ $n2=decoct((int)$n1); }elseif($trans=='3'){ $n2=dechex((int)$n1); }elseif($trans=='4'){ $n2=bindec($n1); }elseif($trans=='5'){ $n2=octdec($n1); }elseif($trans=='6'){ $n2=hexdec($n1); }}?></head><body><form method="post" action="?act=do"><input type="text" name="n1" value="<?php echo $n1;?>"><select name="trans"><option value="1">10to2</option><option value="2">10to8</option><option value="3">10to16</option><option value="4">2to10</option><option value="5">8to10</option><option value="6">16to10</option></select><input type="submit" value="轉換"><input type="text" name="n2" value="<?php echo $n2;?>"></form></body></html>
運行結果：
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