The POST method transfers information via HTTP headers. The information is encoded as described in case of GET method and put into a header called QUERY_STRING.
- The POST method does not have any restriction on data size to be sent.
- The POST method can be used to send ASCII as well as binary data.
- The data sent by POST method goes through HTTP header so security depends on HTTP protocol. By using Secure HTTP you can make sure that your information is secure.
- The PHP provides $_POST associative array to access all the sent information using POST method.
Try out following example by putting the source code in script.
Post.php
<?php
if( $_POST["name"] || $_POST["age"] )
{
if (preg_match("/[^A-Za-z'-]/",$_POST['name'] ))
{
die ("invalid name and name should be alpha");
}
echo "Welcome ".$_POST['name']. "<br />";
echo "You are ".$_POST['age']. " years old.";
exit();
}
?>
<html>
<body>
<form action = "<?php $_PHP_SELF ?>" method = "POST">
Name: <input type = "text" name = "name" />
Age: <input type = "text" name = "age" />
<input type = "submit" name="submit" value="submit"/>
</form>
</body>
</html>
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