Php > Miscellaneous

Binary Conversion

Binary Conversion

<?php 
if($_GET['t'] == "b1") 
{ 
if($Submit1) 
{ 
makeBinary($binary); 
} 
else 
{ 
echo <<<FORM 
<font size="2" face="Verdana, Arial, Helvetica, sans-serif">Please only choose numbers smaller than 255</font> 
<form name="form1" method="post" action="$PHP_SELF?t=b1"> 
  <p><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Convert this number:</font> 
    <input type="text" name="binary"> 
  </p> 
  <p> 
    <input type="submit" name="Submit1" value="Convert"> 
  </p> 
</form> 
FORM;} 



} 
elseif($_GET['t'] == "b2") 
{ 
    if($Submit2) 
{ 
    if($num1 == 1) 
    { 
        $number = 128; 
    } 
    if($num2 == 1) 
    { 
        $number += 64; 
    } 
    if($num3 == 1) 
    { 
        $number += 32; 
    } 
    if($num4 == 1) 
    { 
        $number += 16; 
    } 
    if($num5 == 1) 
    { 
        $number += 8; 
    } 
    if($num6 == 1) 
    { 
        $number += 4; 
    } 
    if($num7 == 1) 
    { 
        $number += 2; 
    } 
    if($num8 == 1) 
    { 
        $number += 1; 
    } 
        echo "<font face=\"Verdana\" size=\"2\">The converted number is: $number</font>"; 
} 
else{ 
echo <<<FORM 
<font face="Verdana" size="2">Place the number "1" or "0" in the boxes</font> 
<form name="form1" method="post" action="$PHP_SELF?t=b2"> 
  <table width="431" border="0" cellpadding="0" cellspacing="0"> 
    <!--DWLayoutTable--> 
    <tr> 
      <td height="25" colspan="2" valign="top"> <input name="num1" type="text" size="1" maxlength="1"> 
        <input name="num2" type="text" size="1" maxlength="1"> <input name="num3" type="text" size="1" maxlength="1"> 
        <input name="num4" type="text" size="1" maxlength="1"> <input name="num5" type="text" size="1" maxlength="1"> 
        <input name="num6" type="text" size="1" maxlength="1"> <input name="num7" type="text" size="1" maxlength="1"> 
        <input name="num8" type="text" size="1" maxlength="1"> </td> 
    </tr> 
    <tr> 
      <td width="110" height="24" valign="top"><input type="submit" name="Submit2" value="Convert"></td> 
      <td width="321"> </td> 
    </tr> 
    <tr> 
      <td height="25"> </td> 
      <td> </td> 
    </tr> 
  </table> 
</form> 
FORM;} 

} 
else 
{ 
echo <<<FORM 
  <table width="591" border="0" cellpadding="5" cellspacing="1" bgcolor="#000000"> 
    <!--DWLayoutTable--> 
    <tr> 
      <td height="32" colspan="3" valign="middle" bgcolor="#FFFFFF"><div align="center"><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Binary 
          Conversions</font></div></td> 
    </tr> 
    <tr> 
      <td width="140" height="24" valign="top" bgcolor="#FFFFFF"><font size="1" face="Verdana, Arial, Helvetica, sans-serif">Decimal 
        to Binary:</font></td> 
      <td width="89" valign="top" bgcolor="#FFFFFF"><form name="form1" method="post" action="$PHP_SELF?t=b1"><input type="submit" name="Submit" value="Go"></form></td> 
      <td width="328" rowspan="3" valign="top" bgcolor="#FFFFFF"></td> 
    </tr> 
    <tr> 
      <td height="24" valign="top" bgcolor="#FFFFFF"><font size="1" face="Verdana, Arial, Helvetica, sans-serif">Binary 
        to Decimal:</font></td> 
      <td valign="top" bgcolor="#FFFFFF"><form name="form1" method="post" action="$PHP_SELF?t=b2"><input type="submit" name="Submit" value="Go"></form></td> 
    </tr> 
    <tr> 
      <td height="2"></td> 
      <td></td> 
    </tr> 
  </table> 
FORM;} 

function makeBinary($x) 
{ 
    if(($x - 128) >= 0) 
    { 
        $binary = '1'; 
        $x = $x - 128; 
    } 
    else 
    { 
        $binary = '0'; 
    } 
     
    if(($x - 64) >= 0) 
    { 
        $binary = "$binary 1"; 
        $x = $x - 64; 
    } 
    else 
    { 
        $binary = "$binary 0"; 
    } 
     
    if(($x - 32) >= 0) 
    { 
        $binary = "$binary 1"; 
        $x = $x - 32; 
    } 
    else 
    { 
        $binary = "$binary 0"; 
    } 
     
    if(($x - 16) >= 0) 
    { 
        $binary = "$binary 1"; 
        $x = $x - 16; 
    } 
    else 
    { 
        $binary = "$binary 0"; 
    } 
     
    if(($x - 8) >= 0) 
    { 
        $binary = "$binary 1"; 
        $x = $x - 8; 
    } 
    else 
    { 
        $binary = "$binary 0"; 
    } 
     
    if(($x - 4) >= 0) 
    { 
        $binary = "$binary 1"; 
        $x = $x - 4; 
    } 
    else 
    { 
        $binary = "$binary 0"; 
    } 
     
    if(($x - 2) >= 0) 
    { 
        $binary = "$binary 1"; 
        $x = $x - 2; 
    } 
    else 
    { 
        $binary = "$binary 0"; 
    } 
     
    if(($x - 1) >= 0) 
    { 
        $binary = "$binary 1"; 
        $x = $x; 
        echo "<font size=\"2\" face=\"Verdana, Arial, Helvetica, sans-serif\">$binary</font>"; 
    } 
    else 
    { 
        $binary = "$binary 0"; 
        echo "<font size=\"2\" face=\"Verdana, Arial, Helvetica, sans-serif\">$binary</font>"; 
    } 
} 
?>