I have data on my site a user can edit via a form. So If the page is opened the user will see the form filled whith his personal data. and when updated and he pushes the submit button I`ll call a function.
<?php
if (!empty($_POST)) {
company_change($_SESSION['user_name']);
} ?>
<HTML>
(...) <-- form is here
</HTML>
after this function is processed I'll receive the return from the function, but the script is not proceed any further. (the regular HTML part)
So my question is. If I direct to a function from a IF statement, and let update some records. How can i make sure the script is executed further after completion of the function logic.
Do i miss a trigger in te IF statement or at the END of the function i call?
Hope someone can help?
According to official documentation (http://php.net/manual/en/functions.user-defined.php and http://php.net/manual/en/functions.returning-values.php), functions come back after they are called, even if you call them from an IF statement.
If your execution flow is not coming back from the function, there may be some reasons :
Something is happening in the function itself, for example, an unhandled exception been thrown.
The function internally jumps to another script or function where it is not returning from
Paste more of your code to take a better look.
You don`t believe this but I had a "}" to much.
So the answer on this questions is: Use an IDE with auto-syntax correction/checking.
(I now use ShiftEdeit.net but you have much more)
Related
Sorry if my question is not clearly understandable, I don't know how to express well what I want to say in English.
This is not a problem with code per se, as it is working as shown, but mostly a doubt of the behaviour of PHP.
When I call a function from another php file, it seems to read the function itself i.e. function loademp(){}
however, if I access the file containing the function from an ajax, it seems to need a call to the function i.e loademp() to be in the same file.
Since I had this issue I ended having this code in order to make it work from both origins, with the call for the ajax inside an if condition, otherwise it would be called twice from the php file:
<?php
if ($_POST['runFunct']=="loademp"){ //call from ajax needs 'loademp()' to access the function;
loademp();
}
function loademp(){ //loaded from another file apparently.
try{
//PDO code
print_r(json_encode($results));
}catch(PDOException $e){
echo $e;
}
}
My other file just look like this:
require __DIR__.'loademp.php';
loademp();
Isn't there a more practical way to just use the code for both cases with no conditioning depending on the origin? Since I can't call a specific function from ajax without the use of POST variables, I guess this is the best case for it, but I would appreciate if you could point out the good practices about it.
I think your confusion here is between defining a function and executing a function.
To define a function, you write something like this:
function say_hello_world() {
echo "Hello, World!\n";
}
This doesn't cause anything to happen immediately, it just defines how to do something. In this case, it's basically like saying:
Whenever I ask you to "say hello world", output to the screen "Hello, World!\n"
To make something actually happen, you have to execute the function, which looks like this:
say_hello_world();
That's basically saying:
Do the actions I gave you for "say hello world"
In your example, your file 'loademp.php' defines a function called loademp - it says "whenever I ask you to 'loademp', here's what I want you to do". In your other file, you include that file, so the function is defined. Then, you run it with this line:
loademp();
An AJAX call is no different from any other page load, so you need to do the same thing there - first, define the function, or include the file that does; then, execute the function.
So, rather than calling loademp.php directly, you could call a PHP script like define_and_execute_loademp.php with exactly the lines you've mentioned:
require __DIR__.'loademp.php';
loademp();
Before anyone tells me to look at other similar posts, I already have and I cannot find any solution to my problem.
I am building a questionnaire for a project, and I am using php 5.6, xampp, phpmyadmin, Phpstorm 2017.1.2 and of course the usual languages html css javacript.
In order to write less code, I used the masterpage method to build my website for the questionnaire.
I therefore have a do-test.php where I put my questionnaire alone and an index.php where I have the main skeleton of the page.
I have my questionnaire form with various fieldsets and their inputs. Lastly I have a input type=submit button that I click and the form is supposed to be submitted. However my $_POST method is not working at all.
The following code does all the work. Unfortunately for reasons yet unknown to me, when the if statement runs, it doesn't even look at the isset or !empty method.
Using an IDE debugger
Debugging the do-test.php without the master-page.: My xdebug (installed in phpstorm), jumps directly from the breakpoint in if statement to the bottom of the page. I tried using an else with a message that "submit is not set" and it shows it before and after submitting the form.
if(isset($_POST['Submit']) && !empty($_POST['Submit'])) {
$results = new Results();
$results->ProcessRequest();
if ($results->isSuccessful()) {
echo "<script type='text/javascript'>
alert('Your data is sent to the server');
</script>";
} else {
echo "<script type='text/javascript'>
alert('Something went wrong.');
</script>";
}
}
My http raw post data is visible but the post array is empty.
Debuggin the do-test.php with the master-page: Gets me 502 bad gateway error
Debug using localhost
Using this code snippet here I tried to see what is going on.
Submitting the form from the master-page or the simple do-test page, gives me the following result:
which means that my post array has all the right variables. All that remains is for the method to be executed and for the data to pass into the db.
My post_max_size and variables_order (advise taken from here) are correct.
magic_quotes_gpc (from this post) are off in php.ini.
Could it be the http modules that interfere with POST as told by GeorgeMillo
here??? If so how do I tamper with those?
Could there be something wrong with my version of phpstorm or the php version?
Any suggestion is welcome. Thank you in advance.
I may have written one thing wrong so I gave the wrong impression. I wrote "when the if statement runs", when in fact, the debugger runs and tries to execute the if statement but it doesnt. Sorry for my bad explanation.
The member "Alive or Die" gave me the simple solution of using
if(count($_POST)>0)
and it works!! So I will stick with that.
Thanks to everyone for your fast comments and for pointing out the obvious when one cannot see it!!
I'm using WordPress with Custom Content Types plugin. I have the code in a PHP file which creates a contact form.
The website is http://schools.raci.org.au/competition/ancq/
It was working fine before I migrated it to a new host. I didn't write the original code, so I don't really know how it works.
Here are the relevant files:
Here is the code for the main page: pastebin.com/piaTSVgc
and the code for the form: pastebin.com/xeqsmc5g
here is admin-ajax.php: pastebin.com/eFx2JFJu
here is the function where register_interest_form lives: pastebin.com/knrChkSP
here is functions.php: pastebin.com/hru5LkQR
Thanks in advance!
Its working from.
When we submit form. there is ajax request is been processing and getting 0 in response.
The default response from admin-ajax.php is,
die( '0' );
...by adding your own exit() or die() after returning your desired content prevents the default response from admin-ajax.php being returned as well.
The solution is to add die() to the end of your own ajax function, so you die the script before die('0')
It also generally means that your ajax call has succeeded.
Ultimately, to answer your question, it's meant to work this way. What you are doing by exiting after returning your content is the right thing to do.
details from.
https://wordpress.stackexchange.com/questions/116759/why-does-wordpress-add-0-zero-to-an-ajax-response
I'm trying to figure out the best way to unset a php session variable, after all pages have loaded and the page will be rendered to the browser. I have a page that includes & requires several pages to be rendered. I want to know if there is a built in php function that will tell php to do something right before the page is completed. Or what would the best way/practice to do this?
EDIT##
Here's what I added...
function unsetHIST_ID(){unset($_SESSION['Hist_CID']);}
register_shutdown_function('unsetHIST_ID');
Am not sure why you want this but if you want a function to be executed after script execution finishes or exit() is called then you should look at register_shutdown_function
Example
function shutdown() {
echo "Am dead anyway";
}
register_shutdown_function('shutdown');
echo "<pre>";
echo "Hello am Alive",PHP_EOL;
Output
Hello am Alive
Am dead anyway <---------------This would always run last
There's the .ini directive auto_append_file, which is parsed last by PHP if specified. It's basically treated as if you'd put require('somefile.php') as the very last command in a file yourself.
You need something like
register_shutdown_function ('my_atexit_function');
or maybe you can do this with
ob_start('content_handler');
The first function will be called immediately before exiting, which is not exactly what you asked for; and the second just before output, but that allows you to do something with an output that's already made static.
I'd go with register_shutdown_function though.
This may be a n00b topic but, anyways, I have been having a rather difficult and strange time with this bug. Basically I was working on a controller method for a page that displays a form. Basically, I was debugging the form's submitted data by var dumping the form input using codeigniter's $this->input->post function like so:
var_dump($this->input->post('first_name'));
Every other day this has worked, but today I was finding that when I dumped post variables to the browser it would return false as if they had no values even though they did have values when I submitted the form. Then I tried accessing the variables through PHP's POST superglobal array directly like so:
var_dump($_POST['first_name']);
and that returned empty as well so then I tried dumping the entire post array like so:
var_dump($_POST);
and it was empty as well despite the fact that I filled out the entire form. Nevertheless, the records in my MySQL database were being updated (which means that the form was submitting even though my $_POST variables appeared empty).
Also, I reasoned that normally, if I var dumped variables in the controller function before a redirect function call that it should give me a 'Headers already sent' error but it never did. It just redirected me to the supposed success page instead of dumping my variables.
So for the about 2 hours I thought that my POST data wasn't being sent and re-checked the code for errors and began commenting out statements one by one until I could find the culprit statement in my script.
Finally, I commented out a chunk of code that sets a success message an redirects, like so:
/*
if($record_updated_successfully)
{
$this->session->set_flashdata('success', $this->lang->line('record-updated-successfully'));
}
redirect('admin/success_page');
*/
and only then did the script start dumping out all my previous variable dumps using codeigniter's $this->input->post function as well as the $_POST superglobal array.
So ok, if the script does indeed redirect me despite the variable dumps sending output before headers are sent then I can see why the $_POST variables would appear empty.
So then the real question is why the script would still redirect despite my sending of output before headers are sent? Has anyone ever experienced this?
Any help with this would be appreciated.
EDIT: with respect to loading the view here's a simplified version of my script looks like
with the debugging var dump statements:
function some_controller_method() {
var_dump($this->input->post());
var_dump($_POST);
// some code
if($this->input->post('form_action') == 'update record') {
// code that runs when the form is submitted
/*
* ...
*/
if($record_updated_successfully)
{
$this->session->set_flashdata('success', $this->lang->line('record-updated-successfully'));
}
redirect('admin/success_page');
}
$this->load->view('my-view-file.php');
}
While I can't be sure, I'm going to assume you were outputting things like the var_dump() in your view file. A view is not executed at the time you call it, for example:
$this->load->view('some_view');
echo "hi!";
In a controller will not result in the contents of some view followed by "hi". It will results in "hi" followed by the contents of some view. The view is actually output after everything else in the controller has run.
This is the only thing that comes to mind with the information you've presented. I'd have to see more code to offer a different diagnosis.
I had "the same" problem and I found an unset() function in a loop in my code. Perhaps this will help.