Tc711Com提示： PHP的ASCII码函数练习

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<?php

#ascii2str.php Huatux
$str=$_POST['ascii'];
preg_match_all("/\d{2,5}/", $str, $a, PREG_PATTERN_ORDER);
$max=count($a[0]);
$i=0;
while ($i < $max):
   $ascii = $a[0]["$i"];
   echo htmlspecialchars(chr("$ascii"));
   $i++;
endwhile;
?>
<form method="post" action="">
<table width="440" height="330" border="0">
    <tr>
      <td height="270" colspan="2">
        <textarea name="ascii" cols="50" rows="20"></textarea>
      </td>
    </tr>
</table>
<input type="submit" name="Submit" value="提交" />
</form>



<?php

#str2ascii.php Huatux
$str=$_POST['str'];
$max=strlen($str);
$i=0;
while ($i < $max):
   echo ord(substr("$str", $i, 1)).'--';
   
   $i++;
endwhile;
?>
<form method="post" action="">
<table width="440" height="330" border="0">
    <tr>
      <td height="270" colspan="2">
        <textarea name="str" cols="50" rows="20"></textarea>
      </td>
    </tr>
</table>
<input type="submit" name="Submit" value="提交" />
</form>