Member Avatar for smvec

hi..

im dynamicelly creating text box in a html file using javascript..

<script>
function create_input_boxes()
{ 
if(document.getElementById("name0"))
{
	return true;
} 
var boxes=""; 
var num_boxes=document.getElementById("num_boxes").value; 
if(num_boxes) 
{  
	for(var i=0;i<num_boxes;i++)  
	{   
		boxes+="<input id='name"+i+"' name='name"+i+"' value=''><br />";   
	}  
	document.getElementById("textbox_container").innerHTML=boxes;  
} 
return false; 
}
</script>
</head>

<body>
<form id="theForm" action="dynamic.php" method="post" onsubmit="return create_input_boxes();">
<div id="textbox_container"></div>
Enter number input boxes: <input name="num_boxes"><br />
<div id="submit_button"><input type="submit" name="submit" value="Submit"></div>
</form>
</body>

while im trying to retrieve the values in php..

i get parse error in line 17. in my php file..

<html>
<head>

</head>
<body>
<?php

if(isset($_POST["submit"]))
{ 	
	for($i=0;$i<count($_POST);$i++) 
    {  
    	$name[]=!empty($_POST["name".$i])?$_POST["name".$i]:""; 
        // All dynamically created inputs are being stored again in $name array  
    } 
    for($i=0;$i<count($name);$i++) 
    (  
    	echo $name[$i];  
    } 
}
?>
</body>
</html>

plz help me in correcting the code.. Thank u

  • 3 Contributors
  • 4 Replies
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  • 1 Day Discussion Span
  • Latest Post Latest Post by smvec

Dani AI

Generated

Good catch by — the parse error came from using the wrong block delimiter in the second PHP loop, and the page needed an id on the num_boxes input so the script can read its value. Beyond those fixes, a few practical points and safer patterns complete the solution.

Returning false from an onsubmit handler stops the form from submitting; creating inputs inside the submit handler then returning false will prevent any data from reaching the server. Either create the fields before submit (for example when num_boxes changes), or let the handler return true (or call form.submit() after creating inputs) so the browser posts the form. Also, naming inputs as an array (name="name[]") simplifies server code: the server receives $_POST['name'] as an array and can loop with foreach instead of trying to build names numerically.

Server-side handling should not rely on count($_POST) to determine how many dynamic fields exist (that count includes other form fields). Use the posted array ($_POST['name']) or a dedicated num_boxes value to control loops. Always validate and sanitize posted values before output; functions like htmlspecialchars prevent XSS when echoing back user input. See the PHP docs on the $_POST superglobal and htmlspecialchars for details and examples: PHP $_POST superglobal htmlspecialchars.

Quick debug checklist: check the exact PHP parse error message and line, view the generated HTML (View Source) to confirm input names/ids, use var_dump($_POST) to inspect submitted data, and enable error display in a dev environment. Also prefer the full PHP opening tag <?php to avoid short-tag issues on some servers.

Recommended Answers

All 4 Replies

Member Avatar for Will Gresham

What parse error?

It will usually give you something to go by, e.g. 'expecting x' or 'unexpected x'

Member Avatar for network18

hi..

im dynamicelly creating text box in a html file using javascript..

<script>
function create_input_boxes()
{ 
if(document.getElementById("name0"))
{
	return true;
} 
var boxes=""; 
var num_boxes=document.getElementById("num_boxes").value; 
if(num_boxes) 
{  
	for(var i=0;i<num_boxes;i++)  
	{   
		boxes+="<input id='name"+i+"' name='name"+i+"' value=''><br />";   
	}  
	document.getElementById("textbox_container").innerHTML=boxes;  
} 
return false; 
}
</script>
</head>

<body>
<form id="theForm" action="dynamic.php" method="post" onsubmit="return create_input_boxes();">
<div id="textbox_container"></div>
Enter number input boxes: <input name="num_boxes"><br />
<div id="submit_button"><input type="submit" name="submit" value="Submit"></div>
</form>
</body>

while im trying to retrieve the values in php..

i get parse error in line 17. in my php file..

<html>
<head>

</head>
<body>
<?php

if(isset($_POST["submit"]))
{ 	
	for($i=0;$i<count($_POST);$i++) 
    {  
    	$name[]=!empty($_POST["name".$i])?$_POST["name".$i]:""; 
        // All dynamically created inputs are being stored again in $name array  
    } 
    for($i=0;$i<count($name);$i++) 
    (  
    	echo $name[$i];  
    } 
}
?>
</body>
</html>

plz help me in correcting the code.. Thank u

Check line 16 in your code '(' has to be "{ "

Member Avatar for network18

Apart from that you need to provide the Id to 'num_boxes' like

<?
if(isset($_POST["submit"]))
{ 	
	for($i=0;$i<count($_POST);$i++) 
    {  
    	$name[]=!empty($_POST["name".$i])?$_POST["name".$i]:""; 
        // All dynamically created inputs are being stored again in $name array  
    } 
    for($i=0;$i<count($name);$i++) 
    { 
    	echo $name[$i];  
    } 
}
?>
<html>
<head>
<script>
function create_input_boxes()
{ 
if(document.getElementById("name0"))
{
	return true;
} 
var boxes=""; 
var num_boxes=document.getElementById("num_boxes").value; 
if(num_boxes) 
{  
	for(var i=0;i<num_boxes;i++)  
	{   
		boxes+="<input id='name"+i+"' name='name"+i+"' value=''><br />";   
	}  
	document.getElementById("textbox_container").innerHTML=boxes;  
} 
return false; 
}
</script>
</head>

<body>
<form id="theForm" action="" method="post" onsubmit="return create_input_boxes();">
<div id="textbox_container"></div>
Enter number input boxes: <input type="text" id="num_boxes" name="num_boxes"><br />
<div id="submit_button"><input type="submit" name="submit" value="Submit"></div>
</form>
</body>
</html>
Member Avatar for smvec

hi..

thank you Network18.. i got it now..

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