I'm working with a custom made Joomla script that generates an image from a blob in a database. However, when we moved it from an Apache server to an IIS server, the script is breaking.
Upon investigation, it seems that now, there is a line break that is getting appended before the header function is being run (when I comment out the image portion, and do an echo "test";, test gets printed on line 2 of the source code.
I've gone through the script over and over again, and through the many files in the component, and can't seem to find out where this new line is coming from. At all.
I've tried using ob_start() and many similar functions, but nothing seems to work.
I'm completely out of ideas, and don't know where to turn.
Is there a way to trace what files are being called in the page, perhaps? Any thoughts on further steps?
Look out for additional whitespace at the end of PHP files. If a PHP file ends in more than a single return after the last ?>, that stuff gets printed regardless of where the file is/was included. That is a common error source in larger PHP projects and would meet your symptoms.
(To circumvent this, some have started with a coding standard that prohibits the last ?> in their source files, which is perfectly legal PHP.)
Be careful, maybe it's an encoding problem. Open the file with vim under linux to see if there an ^M or something like that.
Related
I've found lots of iterations of this question. Most solutions are something like, "take the header that should be on all pages and turn it into an html file, like this:
(One example that I've tried to put in a file called header.php)
<!--PAGE HEADER-->
<div width="100%">
<img src="images/headerimage.jpg" height="240">
</div>
"Then make that header.php. Then insert the file into each page in the site like this" -
<?php include 'header.php';?>
I have tried and tried many different combinations of file paths, existing php code that I know works, examples off of the internet. It doesn't work. When I view the source code, i just see:
<?php include 'header.php';?>
It shows up red (Firefox inspector). As far as I understand it, I should see the imported page header code in its place.
The code hasn't been imported. And none of the code from header.php gets run.
It looks so easy, I have followed tutorials on Youtube, for them it works, for me, nothing. I have tried setting up Apache server and running it (not really knowing what I was doing though).
welcome to StackOverflow!
You can't run PHP in an HTML document. Try to change the file extension from .html to .php
Hope this helps!
Dang! I just dug the reply notifications out of my junk mail. Sorry!
Yes, I think my understanding was that I could just copy all the header code out of my html files and paste it into an empty document and call it header.php. Then I would insert the php include statement in my code, and that should basically look like it did before to the browser. But what it looks like is just the php include statement, and no code is imported.
To answer the question what tutorials I followed, I followed a billion tutorials, and all of it is starting to meld into my confused brain. I've actually been trying to do this for years on and off and have never figured it out.
I tried the link recommended above, and got hung up when I didn't have a directory called mods-enabled in my apache2 directory. I have almost no understanding of what is going on behind the scenes, so when I run into something that doesn't fit the example, I just get lost.
And though a couple of days ago I went through this procedure to run apache and then check if php was working, it looked like apache was working and so was php, but even the mail send php file doesn't work when testing locally, so I think php not being enabled is probably the issue. I just have found it very difficult knowing exactly what that means.
I got a weired behavior on my apache, php setup on debian system.
I tried to create an image with php and output it directly. It failed permanent and the browser said sth. like corrupt image file. After a lot of try and error arroun 3 hours I figured out that there is a TAB character added right at the beginning ob my image content, that does not belong there.
To proove that its part of the apache-php setup I created a test.php file, that just contains the letter 'a' and coppied this file to test.html. So Both files just contain the letter a.
You can see the resulting tab here:
http://www.activeroom.net/test.php
http://www.activeroom.net/test.html
and even on the base url itself - its a php-file, too.
Hope anybody can point me in the correct direction. Btw. on the console everything is fine: php test.php just returns an a. Maybe it is something about the Apache MimeTypes or headers?!
How stupid - there was a php-file prepended through the php.ini. That file had a tab at the end. Sometimes things are really messed up.
Problem Description in Brief:
PHP script seems to work on my local web server when I 'include' it from the footer tag of my index.html file, but does not work when I upload it to my website. Note that I have made sure that all paths are correct, and that the script file has its own php tags, etc.
Problem Description in Detail:
Yes, I am new to PHP scripting, and yes, variants of this question have probably been asked before. The answers to a few of the questions I have read have noted the path of the php script files to be incorrect. I have checked all paths and confirmed that they are indeed correct (including those on the web hosting server). Furthermore, I have been successful in getting the script to work on my local server running Apache2 with PHP5, but have not been successful when uploading it to my website.
Essentially, I am trying to implement a hit counter script which I have acquired from a Stack Overflow post labelled Visitors counter for simple web sites like Vinaora. The code that invokes the php script looks something like this....
<footer>
<!-- Execute Hit Counter Script -->
<?php include($_SERVER['DOCUMENT_ROOT'].'/php/hitcounter.php'); ?>
</footer>
For the likes of me, I cannot figure out why it does not work on the web hosting server. I have tried other combinations of invoking the script like,
<footer>
<!-- Execute Hit Counter Script -->
<?php include('./php/hitcounter.php'); ?>
</footer>
and,
<footer>
<!-- Execute Hit Counter Script -->
<?php include(dirname(__FILE__).'/php/hitcounter.php'); ?>
</footer>
All combinations seem to work on my local web server, but not on the website! Also note that, I have no problem invoking other PHP scripts using other methods (even on the web hosting server), eg.
<form id="form-query" onsubmit="this.checkValidity();" action="./php/contact.php" method="post">
Any advice/suggestions would be appreciated.
Do you get any PHP error?
First of all, you need to activate error reporting.
Put this before including your file
ini_set('display_errors',1);
error_reporting(-1);
PHP should tell you what's happening.
If you don't see anything, change the filename index.html to index.php and try again.
Maybe be you have used "\" in your include path
Wrong:
<?php include 'includes\header.php'; ?>
You should use "/" to work.
Current:
<?php include 'includes/header.php'; ?>
sometimes it might be dues to casing. check if you you uppercase in naming. on some servers Index.php is not equal to index.php
You might try pasting the "include" code directly into the calling code. Maybe it's the included code itself that's misbehaving...
You are doing completely incorrect thing in the first place.
PHP script seems to work on my local web server when I 'include' it from the footer tag of my index.html
is just totally wrong
There is no such thing as embedding php file within html file (aside from mod_rewrite ...).
For PHP script to be interpreted you must have it (in 99% of cases) with php suffix. This way you allow PHP to distinguish it from regular PHP and send to php interpreter.
Put simply - create this file (a.html):
<body>
abcd<?php echo 'efgh';?>
</body>
and see the result in your browser - use .../a.html
What do you see?
abcd
and not
abcdefgh
On top you always have to have php not the other way around. Solve this or update your question if incorrect.
I am working on Wordpress.
After upload my project file in the live server and then for any certain changes, I found everything inside "styles.css" files comes into only one line.
Even what ever inside the "header.php" or "footer.php" also comes into only one line.
Then its become hardest to search any particular keyword.
Can anybody please suggest me, how do I prevent this kinda editing in the server?
I am using "NetBean 7" as the editor.
Your server has converted your file types to match the server's file system it sounds like. Your line breaks might be gone. Try opening them in Notepad++ or vim to be sure.
If you look at it in Windows under Wordpad it should work too.
I'm developing a PHP application that has to respond to request from several clients, and I thinks "Can any of the clients see the PHP code that I'm writing?".
No, unless
There is a server misconfiguration
There is a bad echo/include somewhere
No. Unless you're echoing it to them under where you're actually using it.
Use includes from below or outside the www served directory. (can't +1 yet.. for Frankie)
Don't use symlinks for your http directories. I've intentionally used this to both show source and execute depending on user request path before, but that required httpd.conf changes (or misconfiguration) and can explicitly be disabled in httpd.conf.
If allowing downloads of files using fopen, don't pass anything the user creates to it or they could figure out how to get it to grab any file they can find.
Consider:
fopen('reports/' . $_GET['blah']);
where the user passes in '../index.php'
No, but you should take all measures to prevent it.
You should always set your sensitive code (heck, why not all?) in a directory bellow your server working dir (say /www), that way if the server gets messed up, it wont be able to show your code to the world because that code will be included by php that is not working in the first place.
If you have your webserver set to serve instead of parse your php yes. But then the clients wouldn't work. So the barring any security holes, answer is no.
No. Assuming you've installed a L/UAMP server properly, or aren't printing out (echo, print_r, etc.) and of the guts of your code, the PHP will be processed and the logic or HTML it's meant to output will be used on the page, not visible.
N.B. If there isn't an 'index' in a directory or a proper .htacess file, an Apache server will show a list of files in the directory, which can be downloaded and reviewed.
One mistake for it to happen is to paste a php tag inside a php string, example:
$string = "This is the answer: <s><?php echo $answer; ?></s>";
echo $string;
The person did a Ctrl+C and Ctrl+V of something that should be printed along the string, but the coder forgot to remove the php tags by distraction.