Get value from javascript to PHP

[DannyMc]

Hi,

I am writing a PHP script to get a ping reply from my LAN PC. So, my idea is like this, when i mouseover/mouse click to the "hostname" display on the web. There will be a hint box appear and show me the ping result. Below is the php function to perform exec:

[CODE=php]
function getdetail($user 1)
{
$auser=$user1;
exec("ping $auser", $coutput);
foreach ($coutput as $line) {
echo $line."<br />";
}
}
[/CODE]

Below is the hint box javascript from dynamicdrive.co m:
[CODE=javascript]
<script type="text/javascript">

/*************** *************** *************** **
* Show Hint script- ? Dynamic Drive (www.dynamicdri ve.com)
* This notice MUST stay intact for legal use
* Visit http://www.dynamicdriv e.com/ for this script and 100s more.
*************** *************** *************** **/

var horizontal_offs et="9px" //horizontal offset of hint box from anchor link

/////No further editting needed

var vertical_offset ="0" //horizontal offset of hint box from anchor link. No need to change.
var ie=document.all
var ns6=document.ge tElementById&&! document.all

function getposOffset(wh at, offsettype){
var totaloffset=(of fsettype=="left ")? what.offsetLeft : what.offsetTop;
var parentEl=what.o ffsetParent;
while (parentEl!=null ){
totaloffset=(of fsettype=="left ")? totaloffset+par entEl.offsetLef t : totaloffset+par entEl.offsetTop ;
parentEl=parent El.offsetParent ;
}
return totaloffset;
}

function iecompattest(){
return (document.compa tMode && document.compat Mode!="BackComp at")? document.docume ntElement : document.body
}

function clearbrowseredg e(obj, whichedge){
var edgeoffset=(whi chedge=="righte dge")? parseInt(horizo ntal_offset)*-1 : parseInt(vertic al_offset)*-1
if (whichedge=="ri ghtedge"){
var windowedge=ie && !window.opera? iecompattest(). scrollLeft+ieco mpattest().clie ntWidth-30 : window.pageXOff set+window.inne rWidth-40
dropmenuobj.con tentmeasure=dro pmenuobj.offset Width
if (windowedge-dropmenuobj.x < dropmenuobj.con tentmeasure)
edgeoffset=drop menuobj.content measure+obj.off setWidth+parseI nt(horizontal_o ffset)
}
else{
var windowedge=ie && !window.opera? iecompattest(). scrollTop+iecom pattest().clien tHeight-15 : window.pageYOff set+window.inne rHeight-18
dropmenuobj.con tentmeasure=dro pmenuobj.offset Height
if (windowedge-dropmenuobj.y < dropmenuobj.con tentmeasure)
edgeoffset=drop menuobj.content measure-obj.offsetHeigh t
}
return edgeoffset
}

function showhint(menuco ntents, obj, e, tipwidth){
if ((ie||ns6) && document.getEle mentById("hintb ox")){
dropmenuobj=doc ument.getElemen tById("hintbox" )
dropmenuobj.inn erHTML=menucont ents
dropmenuobj.sty le.left=dropmen uobj.style.top=-500
if (tipwidth!=""){
dropmenuobj.wid thobj=dropmenuo bj.style
dropmenuobj.wid thobj.width=tip width
}
dropmenuobj.x=g etposOffset(obj , "left")
dropmenuobj.y=g etposOffset(obj , "top")
dropmenuobj.sty le.left=dropmen uobj.x-clearbrowseredg e(obj, "rightedge")+ob j.offsetWidth+" px"
dropmenuobj.sty le.top=dropmenu obj.y-clearbrowseredg e(obj, "bottomedge")+" px"
dropmenuobj.sty le.visibility=" visible"
obj.onmouseout= hidetip
}
}

function hidetip(e){
dropmenuobj.sty le.visibility=" hidden"
dropmenuobj.sty le.left="-500px"
}

function createhintbox() {
var divblock=docume nt.createElemen t("div")
divblock.setAtt ribute("id", "hintbox")
document.body.a ppendChild(divb lock)
}

if (window.addEven tListener)
window.addEvent Listener("load" , createhintbox, false)
else if (window.attachE vent)
window.attachEv ent("onload", createhintbox)
else if (document.getEl ementById)
window.onload=c reatehintbox

/* get id from <a> */
function getValue()
{
var x=document.getE lementById("com puter1").id
document.write( x)
}
</script>
[/CODE]

finally, the host display:
[CODE=html]
<a href="#" id="computer1" onclick="showhi nt('<? getdetail(?>get Value()<?); ?>', this, event, '200px')">tiwli m</a>
[/CODE]

May i know why the final code above is not working? How do i get value from javascript -> php?

Thanks!

[pbmods]

Heya, Danny.

My guess is that the ping command on the server side is sending an unlimited number of pings. Since the exec() command doesn't return anything until the command is finished, it never returns.

Try using the -c parameter for ping to limit the number of pings sent. `man ping` for more information.