An in-depth discussion of the implementation of PHP dropdown box selection _php Tutorial

Realize

The first type of PHP drop-down box implementation method:

2. < ? PHP
4. Submit drop-down box;
6. The result of a direct full trigger onchange event
8. $ ID =$_get[' myselect ';//Myselect
   For the name of Location.herf?id;
10. echo $id;
12. The results submitted using the form;
14. if ($_post["Sendselect"]) {//sendselect is the name of the form;
16. $ Select_val =$_post["Selectid"];
18. echo "The value you have chosen is: $select _val";
20. }
22. Print_r ($_post);
24. $ Xing = "Xing" ;
26. $ Fang = "Fang" ;
28. Echo ' < a href=del_03. php? ID = '. $xing. '
    &action='. $fang. ' > FLX < /A > ';
30. PHP, in the deletion of content, the wording of the hints given; The href must be appended with quotation marks;
32. echo "n". " < input type=' button '
    value=' delete ' onclick= ' if (Confirm (' OK to delete '))
    { location.href='? delete= $result _manage[p_id] '} '>
34. < br>< br>";
36. }
38. echo " < input type=' button ' value =' Connect_next '
    onclick = "Location.href = ' del_03.php?id=
    $xing &action= $fang '>';
40. ?>

The second type of PHP drop-down box selection implementation method:

 
 

  
  

  
<   input     type = "button" value =   "Delete"   onclick="
if (Confirm (' OK to delete ')) location.href=
' del_03.php?id=xing '><   br/>  
  
  

  
<   script     language = "JavaScript" type =   "Text/javascript">  
  
  

  
function Select (obj) {
  
  

  
window.location.href = ' del_04.php?myselect=
'+obj.options[obj.selectedindex].value; 
  
  

  
Return Can not write;
  
  

  
}
  
  

  
< /script >  
  
  

  
 <    input    type   =   "button"    value   =   "delete"   
  onclick   =   "if (confirm (' OK to delete ')) 
 location.href= ' del_03.php?id=xing ' " >  <    br  />    
  
  

  
<   form     name = "MyForm" action =   "Del_04.php" 
Method = "POST" >  
  
  

  
< !--trigger The onchange event directly without submitting the form,-- >  
  
  

  
<  !-- <   Select     name = "Selectid" onchange = 
"Location= ' del_04.php?myselect= ' +this.options
[This.selectedindex].value]>-->  
  
  

  
< !--Write the onchange event in a function-- >  
  
  

  
<   Select     name = "Selectid" onchange =   "SELECT (This)">  
  
  

  
<  !--  <    Select  name="Selectid"   >  -->  
  
  

  
<   option    value = "0" > Please select <  /option >  
  
  

  
<    option  value="value1">  Option1<  /option>  
  
  

  
<    option  value="value2">option2  <  /option>  
  
  

  
<    option  value="value3">  Option3<  /option>  
  
  

  
< /select >  
  
  

  
<    input  type="Submit"   name=" Sendselect " 
value = "Submit drop-down box" />  
  
  

  
< /form >  
 
 

The above is the PHP drop-down box two implementation methods are introduced.

http://www.bkjia.com/PHPjc/445968.html www.bkjia.com true http://www.bkjia.com/PHPjc/445968.html techarticle Implementation of the first PHP drop-down box implementation method:? PHP//Submit drop-down box;//Direct full trigger onchange Event results $ id =$_get[' myselect '];//myselect for location.herf?id name; echo$ I ...

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