I'm learning php here, but my project requires javascript. Now I'm forced to do JS thing.

I downloaded a code that can dynamically add textbox, my problem is how php can get the value of the generated textbox.
For validation and submission.
I don't even know how to make a submit button upon clicking the link.
any help? thank you.

Code:
<SCRIPT language="javascript"> 
var intTextBox=0; 

//FUNCTION TO ADD TEXT BOX ELEMENT 
function addElement() 
{ 
intTextBox = intTextBox + 1; 
var contentID = document.getElementById('content'); 
var newTBDiv = document.createElement('div');
newTBDiv.setAttribute('id','strText'+intTextBox); 
newTBDiv.innerHTML = "Serial numbers "+intTextBox+": <input type='text' id='" + intTextBox + "' name='" + intTextBox + "'/>";

contentID.appendChild(newTBDiv); 

} 

//FUNCTION TO REMOVE TEXT BOX ELEMENT 
function removeElement() 
{ 
if(intTextBox != 0) 
{ 
var contentID = document.getElementById('content'); 
contentID.removeChild(document.getElementById('strText'+intTextBox)); 
intTextBox = intTextBox-1; 
} 
} 
</SCRIPT> 
</head> 
<body> 
<p>Demo of Adding and Removing Text Box Dynamically using JavaScript</p> 
<p><a href="javascript:addElement();" >Add</a> <a href="javascript:removeElement();" >Remove</a></p> 
<div id="content"></div>