Archive:PHP and MySQL Programming/Form Handling - Revision history

wikademia>Wikademia: moved PHP and MySQL Programming/Form Handling to Archive:PHP and MySQL Programming/Form Handling over redirect

2009-06-12T07:37:50Z

moved PHP and MySQL Programming/Form Handling to Archive:PHP and MySQL Programming/Form Handling over redirect

← Older revision	Revision as of 07:37, 12 June 2009
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wikademia>Wikademia: moved Archive:PHP and MySQL Programming/Form Handling to PHP and MySQL Programming/Form Handling over redirect

2009-05-18T21:04:21Z

moved Archive:PHP and MySQL Programming/Form Handling to PHP and MySQL Programming/Form Handling over redirect

← Older revision	Revision as of 21:04, 18 May 2009
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wikademia>Wikademia: moved PHP and MySQL Programming/Form Handling to Archive:PHP and MySQL Programming/Form Handling

2009-05-18T20:23:31Z

moved PHP and MySQL Programming/Form Handling to Archive:PHP and MySQL Programming/Form Handling

← Older revision	Revision as of 20:23, 18 May 2009
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wikademia>Wikademia at 22:31, 4 May 2009

2009-05-04T22:31:14Z

← Older revision		Revision as of 22:31, 4 May 2009
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	In order to get user input without using the command line, then you will use HTML forms. PHP has various functions and techniques for handling the input from HTML forms. In specific, we will use the special array variables $_GET[] and $_POST[].		In order to get user input without using the command line, then you will use HTML forms. PHP has various functions and techniques for handling the input from HTML forms. In specific, we will use the special array variables $_GET[] and $_POST[].
			{{ntnes}}
	== HTML Forms ==		== HTML Forms ==

wikademia>Wikademia: 18 revisions

2009-04-18T19:26:22Z

18 revisions

← Older revision	Revision as of 19:26, 18 April 2009
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wikademia>Kencyber: /* POST */

2007-10-12T18:42:28Z

POST

← Older revision		Revision as of 18:42, 12 October 2007
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	== POST ==		== POST ==

	To retrieve POST variables, we use the following method :		To retrieve <code>POST</code> variables, we use the following method :

	form_handler.php :		'''form_handler.php :'''
			<source lang="php">
	<?		<?
	$username = $_POST['username'];		$username = $_POST['username'];
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	print "Username : $username \n Password : $password \n";		print "Username : $username \n Password : $password \n";
	?>		?>
			</source>

	Note that when POST is used, the posted data is completely invisible to the user.		Note that when <code>POST</code> is used, the posted data is completely invisible to the user.

	[[../Command Line Programming/\|Previous: Command Line Programming]] \| [[../\|TOC]] \| [[../Introduction to MySQL/\|Next: Introduction to MySQL]]		[[../Command Line Programming/\|Previous: Command Line Programming]] \| [[../\|TOC]] \| [[../Introduction to MySQL/\|Next: Introduction to MySQL]]

	[[Category:PHP and MySQL Programming\|{{SUBPAGENAME}}]]		[[Category:PHP and MySQL Programming\|{{SUBPAGENAME}}]]

wikademia>Kencyber: /* GET */

2007-10-12T18:41:31Z

GET

← Older revision		Revision as of 18:41, 12 October 2007
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	== GET ==		== GET ==

	To retrieve GET variables in the address url, we use the following method :		To retrieve <code>GET</code> variables in the address url, we use the following method :

	form_handler.php :		'''form_handler.php :'''
			<source lang="php">
	<?		<?
	$username = $_GET['username'];		$username = $_GET['username'];
	$password = $_GET['password'];		$password = $_GET['password'];
	~~print~~ "Username : $username \n Password : $password \n";		echo "Username : $username \n Password : $password \n";
	?>		?>
			</source>

	Please note that GET is not good to use for this example, because you will generally not want username and password details being displayed in the URL. Rather use POST for login details and authentication.		Please note that <code>GET</code> is not good to use for this example, because you will generally not want username and password details being displayed in the URL. Rather use POST for login details and authentication.

	== POST ==		== POST ==

wikademia>Kencyber: /* HTML Forms */

2007-10-12T18:37:44Z

HTML Forms

← Older revision		Revision as of 18:37, 12 October 2007
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	Before we start using these special variables, lets have a look at how to set up the HTML forms to interact with PHP. Here is a simple example form :		Before we start using these special variables, lets have a look at how to set up the HTML forms to interact with PHP. Here is a simple example form :

	<source lang="~~php~~">		<source lang="html4strict">
	<html>		<html>
	<head><title>HTML Form Example</title></head>		<head><title>HTML Form Example</title></head>

wikademia>Kencyber: /* HTML Forms */

2007-10-12T18:36:59Z

HTML Forms

← Older revision		Revision as of 18:36, 12 October 2007
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	Before we start using these special variables, lets have a look at how to set up the HTML forms to interact with PHP. Here is a simple example form :		Before we start using these special variables, lets have a look at how to set up the HTML forms to interact with PHP. Here is a simple example form :

	<~~HTML~~>		<source lang="php">
	<~~HEAD~~><~~TITLE~~>HTML Form Example</~~TITLE~~></~~HEAD~~>		<html>
	<~~BODY~~>		<head><title>HTML Form Example</title></head>
	<~~FORM~~ method='POST' action='form_handler.php'>		<body>
	username : <~~INPUT~~ type='text' name='username'> <BR>		<form method="POST" action="form_handler.php">
	password : <~~INPUT~~ type='password' name='password'> <BR>		username : <input type="text" name="username"> <br>
	<~~INPUT~~ type='submit' value='GO'>		password : <input type="password" name="password"> <br>
	</~~FORM~~>		<input type="submit" value="GO">
	</~~BODY~~>		</form>
	</~~HTML~~>		</body>
			</html>
			</source>

	The above example sets up a form with a `method` and an `action` attribute. The `method` defines how the data from the form is to be transferred to the page defined by `action`. The `method` can either be GET or POST. If GET is used, then all the form elements will be appended to the url of the target page (`action`), in ~~this~~ format : target?attrib1=val1&attrib2=val2&attrib3=val3 etc... These attributes are easily accessed in PHP by using the $_GET[] array ~~variable;~~		The above example sets up a form with a <code>method</code> and an <code>action</code> attribute. The `method` defines how the data from the form is to be transferred to the page defined by `action`. The `method` can either be ''GET'' or ''POST''. If ''GET'' is used, then all the form elements will be appended to the url of the target page (specified by the <code>action</code> attribute), in url encoded format (<code>target?attrib1=val1&attrib2=val2&attrib3=val3</code> etc...) These attributes are easily accessed in PHP by using the <code>$_GET[]</code> array.

	If POST is ~~used~~, then the data will be put into a special server variable, and accessed in PHP by using the $_POST[] array ~~variable;~~		If the ''POST'' method is specified, then the data will be put into a special server variable, and accessed in PHP by using the built-in <code>$_POST[]</code> array.

	Note that in the HTML code, the `name` attribute of the INPUT tags are used as the reference strings in the $_GET and $_POST arrays, thus it is very important to always use unique values for the `name` attribute.		Note that in the HTML code, the <code>name</code> attribute of the INPUT tags are used as the reference strings in the <code>$_GET</code> and <code>$_POST</code> arrays, thus it is very important to always use unique values for the <code>name</code> attribute.

	== GET ==		== GET ==

wikademia>Darklama: recat sort

2007-04-02T14:22:12Z

recat sort

← Older revision		Revision as of 14:22, 2 April 2007
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	[[../Command Line Programming/\|Previous: Command Line Programming]] \| [[../\|TOC]] \| [[../Introduction to MySQL/\|Next: Introduction to MySQL]]		[[../Command Line Programming/\|Previous: Command Line Programming]] \| [[../\|TOC]] \| [[../Introduction to MySQL/\|Next: Introduction to MySQL]]

	[[Category:PHP]]		[[Category:PHP and MySQL Programming\|{{SUBPAGENAME}}]]
	~~[[Category:~~MySQL]]