PHP Get or Retrieve Form Data
From w3cyberlearnings
Contents |
How to get or process the form data
- When user fill in all the require form and send to the server for processing, the server requires to pare or process the form data.
- In this demo, you will learn how to convert the form data into array or into object for further processing: storing into the user data into database or request another information from the database.
Form
<html>
<head>
<title>User Register</title>
</head>
<body>
<form method="post" action="process.php">
<table border="0">
<tr>
<td>First Name:</td>
<td>
<input type="text" name="first_name" size="20" maxlength="20"/>
</td>
</tr>
<tr>
<td>Middle Name:</td>
<td>
<input type="text" name="middle_name" size="20" maxlength="20" />
</td>
</tr>
<tr>
<td>Last Name:</td>
<td>
<input type="text" name="last_name" size="20" maxlength="20" />
</td>
</tr>
<tr>
<td>Tel/Phone:</td>
<td>
<input type="text" name="phone" size="20" maxlength="20" />
</td>
</tr>
<tr>
<td>Login Name:</td>
<td>
<input type="text" name="login_name" size="20" maxlength="20" />
</td>
</tr>
<tr>
<td>Password:</td>
<td>
<input type="password" name="login_password1" size="20" maxlength="20" />
</td>
</tr>
<tr>
<td>Confirm:</td>
<td>
<input type="password" name="login_password2" size="20" maxlength="20" />
</td>
</tr>
<tr>
<td colspan="2">
<input type="submit" name="register_btn" value="Register" />
</td>
</tr>
</table>
</form>
</body>
</html>
Convert Form data into object
<?php
if ($_POST) {
$object = new stdClass();
foreach ($_POST as $name => $value) {
// we don't want the register_btn
// in the object
if ($name == 'register_btn')
continue;
$object->$name = $value;
}
print_r($object);
}
?>
Convert Form data for the POST or GET
// for POST method
$aa = array();
if($_POST) {
foreach($_POST $name=>$value) {
$aa[$name]= $value;
}
}
print_r($aa);
// for GET method
$aa = array();
if($_GET) {
foreach($_GET $name=>$value) {
$aa[$name]= $value;
}
}
print_r($aa);
PHP form for processing Form data
- This function can return object, array or json data generated from the form.
//method: GET, POST
//return: array, json, object
//not_name_frm_aa: list of the form element that not included for the return data
function process_form_data($method="GET", $return="array", $not_name_frm_aa=null) {
$return_co = "";
if ($method == "POST") {
$return_co = array();
foreach ($_POST as $name => $value) {
if (in_array($name, $not_name_frm_aa))
continue;
$return_co[$name] = $value;
}
} else if ($method == "GET") {
$return_co = array();
foreach ($_GET as $name => $value) {
if (in_array($name, $not_name_frm_aa))
continue;
$return_co[$name] = $value;
}
}
if ($return_co) {
if ($return == "array")
return $return_co;
else if ($return == "object")
return (object) $return_co;
else if ($return == "json")
return json_encode($return_co);
} else {
return false;
}
}
Example 1: Processing GET and return form data as json
<?php
if ($_GET) {
$re_data = process_form_data("GET", 'json', array('register_btn'));
print_r($re_data);
}
?>
Example 2: Processing POST and return form data as json
<?php
if ($_POST) {
$re_data = process_form_data("POST", 'json', array('register_btn'));
print_r($re_data);
}
?>
Related Links
Dynamic HTML From Array
Dynamic HTML From Database
Dynamic HTML with Ajax
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