php how to self submit form

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Php Php Post Form To Self
How to create a PHP form that submit to self ?
How do I make a PHP form that submits to self?
PHP: on select change, post form to self
HTML form PHP post to self to validate or submit to new page
Posting Form Data to SELF
Self submit form php
Self submit a form values using PHP_SELF
Using PHP_SELF in the action field of a form
What is PHP_SELF variable?
Using the PHP_SELF variable in the action field of the form
The complete code of “form-action.php”
What are PHP_SELF exploits and how to avoid them
How to Avoid the PHP_SELF exploits
See Also
How do I make a PHP form that submits to self
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Php Php Post Form To Self

People also askHow to create a PHP form that submit to self?How to create a PHP form that submit to self?…

are the opening and closing form tagsaction=”registration_form.php” method=”POST”> specifies the destination URL and the submission type.First/Last name: are labels for the input boxes are input box tags
is the new line tagMore items

How to create a PHP form that submit to self ?

Explanation: $_SERVER [‘PHP_SELF’]: The $_SERVER [“PHP_SELF”] is a super global variable that returns the filename of the currently executing script. It sends the submitted form data to the same page, instead of jumping on a different page. htmlspecialcharacters (): …

Читайте также: Php парсер всех страница

How do I make a PHP form that submits to self?

If you view source on the form in the browser, you’ll see how it submits to self — the form’s action attribute will contain the name of the current script

PHP: on select change, post form to self

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$bmsclientlist = $clientobj->getBMSClientList(); echo '
'; $backupobj = new AdminBackup(); if(isset($_POST['bmsid'])< $statusarray = $backupobj->getStatusTotalsbyId($_POST['bmsid']); >else< $statusarray = $backupobj->getStatusTotals(); >

HTML form PHP post to self to validate or submit to new page

Today is my first day working with php and I finally figured out how to get my page to post back to itself (I’d had the page as .html, instead of .php), but now I’m having trouble …

    .error  else < $firstName = test_input($_POST["firstName"]); >if (empty($_POST["lastName"])) < $lastNameErr = "Last name is required"; >else < $lastName = test_input($_POST["lastName"]); >> // Sanitize data function test_input($data) < $data = trim($data); $data = stripslashes($data); $data = htmlspecialchars($data); return $data; >?> Find Customer
 
 " method="post"> First Name: "> 
 
Last Name: "> else < $firstName = test_input($_POST["firstName"]); >if (empty($_POST["lastName"])) < $lastNameErr = "Last name is required"; $valid = false; >else < $lastName = test_input($_POST["lastName"]); >//if valid then redirect if($valid) < header('Location: http://mywebsite.com/otherAction.php'); exit(); >>       First name:    .error  else < $firstName = test_input($_POST["firstName"]); $valid++; >if (empty($_POST["lastName"])) < $lastNameErr = "Last name is required"; >else < $lastName = test_input($_POST["lastName"]); $valid++; >if ($valid >= 2) < $app_state = "processed"; >> // Sanitize data function test_input($data) < $data = trim($data); $data = stripslashes($data); $data = htmlspecialchars($data); return $data; >if ($app_state == "empty") < ?>Find Customer
 
 " method="post"> First Name: "> 
 
Last Name: "> > if ($app_state == "Logged in") < echo("Logged in
Hello Vincent"); > ?> if (empty($firstNameErr) && empty($lastNameErr)) < // process the data // redirect to other page. header('LOCATION: index.php'); exit(); > html code here.

Posting Form Data to SELF

what do i put for action when posting form data back to the page i am in? many thanks! — bobby

Self submit form php

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"> //there is no reason to use this to submit form data to the same page //will do the same thing action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" // Here is how to post form data to self or to the same page & // avoid the PHP_SELF exploits at the same time. <form name="my_form" method="post" action="<?php echo htmlentities($_SERVER['PHP_SELF']); ?>"> </form> <?php if (!empty($_POST)): ?> Welcome, <?php echo htmlspecialchars($_POST["name"]); ?>!<br> Your email is <?php echo htmlspecialchars($_POST["email"]); ?>.<br> <?php else: ?> <form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post"> Name: <input type="text" name="name"><br> Email: <input type="text" name="email"><br> <input type="submit"> </form> <?php endif; ?>

Submitting form to self page is easy.Just what you have to do is set form action method to blank.Leaving form action blank will submit form to itself. For submitting php form …

 ?>        Field 1    
  Field 2

Self submit a form values using PHP_SELF

We can achieve this by using PHP_SELF variable in action field of the form. This PHP_SELF variable returns the name and path of the current file. So when we use PHP_SELF variable in action field of the form, form values are submitted to same page. Through this post, we are making a simple page to understand the use of the PHP_SELF variable

«; echo «Your email address is: «. $_POST[«email»].»
«; > ?> «> Name:
E-mail:

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Using PHP_SELF in the action field of a form

In this article shows the usage of PHP_SELF variable and how to avoid PHP_SELF exploits.

What is PHP_SELF variable?

PHP_SELF is a variable that returns the current script being executed. This variable returns the name and path of the current file (from the root folder). You can use this variable in the action field of the FORM. There are also certain exploits that you need to be aware of. We shall discuss all these points in this article. We will now see some examples. echo $_SERVER[‘PHP_SELF’];

a) Suppose your php file is located at the address: http://www.yourserver.com/form-action.php

In this case, PHP_SELF will contain: «/form-action.php»

b) Suppose your php file is located at the address: http://www.yourserver.com/dir1/form-action.php

For this URL, PHP_SELF will be : «/dir1/form-action.php»

Using the PHP_SELF variable in the action field of the form

A common use of PHP_SELF variable is in the action field of the tag. The action field of the FORM instructs where to submit the form data when the user presses the “submit” button. It is common to have the same PHP page as the handler for the form as well.

However, if you provide the name of the file in the action field, in case you happened to rename the file, you need to update the action field as well; or your forms will stop working.

Using PHP_SELF variable you can write more generic code which can be used on any page and you do not need to edit the action field.

Consider, you have a file called form-action.php and want to load the same page after the form is submitted. The usual form code will be:

 form method="post" action="form-action.php" >

We can use the PHP_SELF variable instead of “form-action.php”. The code becomes:

form name="form1" method="post" action=" $_SERVER['PHP_SELF']; ?>" >

The complete code of “form-action.php”

Here is the combined code, that contains both the form and the PHP script.

php if(isset($_POST[‘submit’])) $name = $_POST[‘name’]; echo «User Has submitted the form and entered this name : $name «; echo «
You can use the following form again to enter a new name.»; > ?> «>

This PHP code is above the HTML part and will be executed first. The first line of code is checking if the form is submitted or not. The name of the submit button is “submit”. When the submit button is pressed the $_POST[‘submit’] will be set and the IF condition will become true. In this case, we are showing the name entered by the user.

If the form is not submitted the IF condition will be FALSE as there will be no values in $_POST[‘submit’] and PHP code will not be executed. In this case, only the form will be shown.

What are PHP_SELF exploits and how to avoid them

The PHP_SELF variable is used to get the name and path of the current file but it can be used by the hackers too. If PHP_SELF is used in your page then a user can enter a slash (/) and then some Cross Site Scripting (XSS) commands to execute.

 form name="test" action=" $_SERVER['PHP_SELF']; ?>" method="post">

Now, if a user has entered the normal URL in the address bar like http://www.yourdomain.com/form-action.php the above code will be translated as:

form name="test" action="form-action.php" method="post">

Now consider that the user has called this script by entering the following URL in the browser’s address bar:

In this case, after PHP processing the code becomes:

 form name="test" method="post" action="form-action.php"/> script>alert('xss')script>foo"">

You can see that this code has added a script tag and an alert command. When this page is be loaded, user will see an alert box. This is just a simple example how the PHP_SELF variable can be exploited.

Any JavaScript code can be added between the “script” tag. . A hacker can link to a JavaScript file that may be located on another server. That JavaScript file can hold the malicious code that can alter the global variables and can also submit the form to another address to capture the user data, for example.

How to Avoid the PHP_SELF exploits

PHP_SELF exploits can be avoided by using the htmlentities() function. For example, the form code should be like this to avoid the PHP_SELF exploits:

form name="test" action="$_SERVER['PHP_SELF']); ?>" method="post">

The htmlentities() function encodes the HTML entities. Now if the user tries to exploit the PHP_SELF variable, the attempt will fail and the result of entering malicious code in URL will result in the following output:

form name="test" method="post" action="form-action.php/"><script>alert('xss')& lt;/script><foo">

As you can see, the script part is now ‘sanitized’.

So don’t forget to convert every occurrence of «$_SERVER[‘PHP_SELF’]» into «htmlentities($_SERVER[‘PHP_SELF’])» throughout your script.

NOTE: Some PHP servers are configured to solve this issue and they automatically do this conversion.But, why take risk? make it a habit to use htmlentities() with PHP_SELF.