The implementation of the Chinese character to the location code in PHP application Source example Analysis _php skills

Copy Code code as follows:

<?php
Global $PHP _self;
echo $PHP _self;
$t 1=$_post[' textfield1 '];
$t 2=$_post[' textfield2 '];
$t 3=$_post[' textfield3 '];
$t 4=$_post[' Textfield4 '];
Chinese character--Location code
if ($t 1!= "") {
$t 2= sprintf ("%02d%02d", Ord ($t 1[0)) -160,ord ($t 1[1])-160);
echo $t 2;
}
Location code--Chinese characters
if ($t 3!= "") {
$t 4 = Chr (substr ($t 3,0,2) +160). Chr (substr ($t 3,2,2) +160);
Echo $t 4;
}
?>
<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en"
"Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >

<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 "/>
<title> Untitled Document </title>
<style type= "Text/css" >
<!--
. STYLE1 {font-size:18px}
-->
</style>

<body>
<table width= "528" height= "146" border= "1"
align= "center" cellpadding= "0" cellspacing= "0" >
<tr>
&LT;TD width= "524" height= "><div" "Center"
class= "STYLE1" > Chinese character Location Code query system </div></td>
</tr>
<tr>
<td><form id= "Form1" Name= "Form1" method= "POST" action=
"<?= $PHP _self?>" >
<label> Input Chinese characters
<input name= "Textfield1" type= "text" value= "<?= $t 1?>"/>
</label>
<label>
<input type= "Submit" name= "Submit" value= "Convert"/>
</label>
<label>
<input name= "Textfield2" type= "text" value= "<?= $t 2?>"/>
</label>
</form>
<br/>
<form id= "Form2" name= "Form2" method= "post" action= "<?= $PHP _self?>" >
<label> Input Location Code
<input name= "textfield3" type= "text" value= "<?= $t 3?>"/>
</label>
<input type= "Submit" Name= "Submit2" value= "Convert"/>
<input name= "Textfield4" type= "text" value= "<?= $t 4?>"/>
</form>
</td>
</tr>
</table>
</body>