Php Form Methods

We explain to You PHP form functions or methods. There are three types of PHP form functions or methods.

• $_GET Function or Method
• $_POST Function or Method
• $_REQUEST Function or Method

$_GET Function or Method

The built-in $_GET method is used to collect values from a form sent with method="get". Information sent from a form with the GET method is visible to everyone (it will be displayed in the browser's address bar) and has a limit on the amount of information to send(max 100 characters).

Example

<form action="welcome.php" method="get">
Name:<input type="text" name="fname" />
Age:<input type="number" name="age" />
<input type="submit" />
</form>

when the client clicks the "submit" button, the URL sent to the server could look something like this. The "welcome.php" file can now use the $_GET method to collect form data (the names of the form fields will automatically be the keys in the $_GET array).

Example

Welcome:<?php echo $_GET['fname']; ?> <br/>
Age:<?php echo $_GET['age']; ?> <br/>

When using method="get" in HTML forms, all variable names and values are displayed in the URL. this method should not be used when sending passwords or other sensitive information. However, because the variable is displayed in the URL, it is possible to bookmark the page. This can be useful in some cases. the get method is not suitable for large variable values. the value cannot exceed 100 characters.

$_POST Function or Method

The built-in $_POST method is used to collect value from a form sent with method="post". Information sent from a form with the POST method is invisible to others and has no limits on the amount of information to send. however, there is an 8 MB max size for the POST method. by default (can be changed by setting the post_max_size in the php.ini file).

Example

<form action="welcome.php" method="post">
Name:<input type="text" name="fname" />
Age:<input type="number" name="age" />
<input type="submit" />
</form>

When the user clicks the "submit" button, the URL will look like this. http://localhost/example/welcome.php The "welcome.php" file can now use the $_POST method to collect form data (the names of the form fields will automatically be the keys in the $_POST array).

Example

Welcome:<?php echo $_POST['fname']; ?> <br/>
Age:<?php echo $_POST['age']; ?> <br/>

Information sent from a form with the POST method is invisible to others and has no limits on the amount of information to send. However, because the variables are not displayed in the URL. it is not possible to bookmark the page.

$_REQUEST Function or Method

The PHP built-in $_REQUEST method contains the contains of both $_GET, $_POST and $_COOKIE. The $_REQUEST method can be used to collect form data sent with both the GET and POST methods.

Example

Welcome:<?php echo $_REQUEST['fname']; ?> <br/>
Age:<?php echo $_REQUEST['age']; ?> <br/>