Few days ago i was working on a pager script where i have to submit a form manually to send a page. But due to user requirements thats need to send in delay and i was about to use CRON job for that. But this time i was in deep problem to send that page. I was using CURL, fsockopen and many others way to submit the form but none of those works for unknown reason. It was really a funny problem but at least i solved that.
Here i want to discuss about the different way to submit a form.
Traditional Form Submit:
This is the most common form uses everywhere.
< form action="targetpage.php" name="myForm">
[form elements]
< input type="submit" value="send" name="send" />
< /form >
JavaScript Form Submit:
You can call a javascript function at any event for example onClick at button or OnChange at combo box and so on. And inside your javascript just write the line above.
document.myForm.submit();
CURL Form Submit:
This technique is rarely used in our application but we can submit any form using CURL just like normal form. Here is an example :
$ch = curl_init();
curl_setopt ($ch, CURLOPT_URL, $url); // set the post-to url
curl_setopt ($ch, CURLOPT_HEADER, 1); // Header control
curl_setopt ($ch, CURLOPT_POST, 1); // tell it to make a POST, not a GET
curl_setopt ($ch, CURLOPT_POSTFIELDS, urlencode($queryString));
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);
$response = curl_exec($ch);
curl_close ($ch);
FSOCKOPEN Form Submit:
This is also rarely used in our general application. For the Internet domain, it will open a TCP socket connection to hostname on port port. hostname may in this case be either a fully qualified domain name or an IP address. Here is a sample code:
$method =”GET” ; // POST or GET define here
$fp = fsockopen($host,80);
if ($method == ‘GET’)
$path .= ‘?’ . $data;
fputs($fp, “$method $path HTTP/1.1\n”);
fputs($fp, “Host: $host\n”);
fputs($fp, “Content-type: application/x-www-form-urlencoded\n”);
fputs($fp, “Content-length: ” . strlen($data) . “\n”);
fputs($fp, “User-Agent: MSIE\n”);
fputs($fp, “Connection: close\n\n”);
if ($method == ‘POST’)
fputs($fp, $data);
while (!feof($fp))
$buf .= fgets($fp,128);
fclose($fp);
return $buf;
AJAX Form Submit:
At any AJAX application we frequently use such code.
var http_request = false;
url ="myformactionpage.php";
parameters ="field1=val1&field2=val2";
if (window.XMLHttpRequest) { // Mozilla, Safari,...
http_request = new XMLHttpRequest();
if (http_request.overrideMimeType) {
` http_request.overrideMimeType('text/html');
}
} else if (window.ActiveXObject) { // IE
try {
http_request = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
http_request = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {}
}
}
if (!http_request) {
alert('Cannot create XMLHTTP instance');
return false;
}
http_request.onreadystatechange = alertContents;
http_request.open('POST', url, true);
http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
http_request.setRequestHeader("Content-length", parameters.length);
http_request.setRequestHeader("Connection", "close");
http_request.send(parameters);
Share your tought if you find any others way to submit a html form.
Enjoy PHPing......