I have this code in a template
[[+isShowMore:is=`1`:then=`show more`:else=`no`]]
It is printing no. But it should show show more as placeholder isShowMore is set to 1 by this line of code in a snippet.
$modx->setPlaceHolder('isShowMore', 1);
Also checked by this code
[[+isShowMore]]
[[+isShowMore:is=`1`:then=`show more`:else=`no`]]
[[+isShowMore]] is printing 1 but the line with output modifier showing no.
Any clue what is wrong here? I am using modx revolution 2.2.8 traditional.
Similar issue is also posted in modx forum.
http://forums.modx.com/thread/85150/output-filter-on-placeholder-problem#dis-post-469615
I had this problem; my page was using a template that had [[*content]]. Changing that to [[!*content]] to get rid of caching solved my issue.
FYI, my snippet is being called with ! so that its output isn't cached either.
Are you doing that conditional inside another conditional somehow? Nesting conditionals usually cause this type of weird problem. Have you tried calling both your snippet and the placeholder output uncached?
I've also experienced this several times and there doesn't seem to be an obvious cause, some unknown magic in the modx output conditional logic. Experience has taught me to simply try to avoid using them as much as I can.
It's ugly but perhaps you could work around your problem by placing whatever you wish to output in the actual placeholder and then just printing the placeholder as it is.
Not sure why this doesn't work in your case so I recommend you do it with a snippet.
[[EvalIsShowMore? &val=`[[+isShowMore]]`]]
in EvalIsShowMore snippet put something like
<?php
if($val){
echo 'something';
}else{
echo 'nothing';
}
Hm, probably your placeholder is located above snippet!
In Modx output occurs at the last moment, but the logic works consistently (cascade).
Here's an example of how to do:
[[+isShowMore]]
[[!yourSnippet]]
[[+isShowMore:is=`1`:then=`show more`:else=`no`:toPlaceholder=`isShowMore`]]
another example:
[[+snippet_placeholder1]]
[[!snippet]]
[[+snippet_placeholder1:add=`[[+snippet_placeholder2]]`:toPlaceholder=`snippet_placeholder1`]]
give the eq modifier a try:
[[+isShowMore:eq=`1`:then=`show more`:else=`no`]]
Related
My backup content (should the database fail) is brought in with include(). For some reason, there's a mysterious lone '1' below the div the include is wrapped in. It does it every time, but just on the content include. I've checked the function, all pages involved, no stray 1. If it loads from the database, everything's fine.
Any ideas why?
(empty($Content)?(empty($dbContent)?include($URL):$dbContent):$Content);
That's the core of the function. No code to provide really, just a strange 1.
Apparently it was the nested ternaries causing the issue. It outputs a 1 right after the function, as if it were saying echo include()
Very odd, because the rest of the functions seem to be working fine. The only difference is the include().
I'll switch back to longhand if any more odd behavior appears. It would be nice to know why it was treating it like it had echo in front of it.
I was trying to do sprintf("<%s>", "Sat");, but nothing comes out. When you remove the less than symbol, it will start working again. Anyone experience this behavior and whether it expected? as i think it is a bug.
You can even get the same result here with printf.....
http://writecodeonline.com/php/
Your browser is probably rendering it as a tag. View source to confirm.
http://codepad.org/g5FXZAwa
<?php
printf("<%s>", "Sat");
Prints <Sat>
Edit for Yogesh.
<?php
echo sprintf("<%s>", "Sat");
Prints <Sat>
I believe that this happens because <Sat> is interpreted by your browser as a tag.
I'm looking for something that Is really hard for me to do.. I really tried to search all over the net for Solution, But I couldn't seem to find any. I also tried doing this for hours.
What I'm doing: Making a theme for PHPBB2, Installed a MOD that can include PHP in themes.
What is the problem: When I'm doing {} tags in php, It just can't echo those tags.
Let's say I have a function that creates a Table for me, like that:
CreateMyTable(Name,Size,Color);
I put in the function those strings:
CreateMyTable("{FORUM_NAME}",1000,red);
The title stays blank, I actually want it to echo {FORUM_NAME}.
How can I do this?
P.S: I can't do this
CreateMyTable(?>{FORUM_NAME}<?php , 1000, red);
It's not going to work becuase <? = <!-- PHP --> , ?> = <!-- ENDPHP -->.
Thanks for your help :)
If you look in the PHPbb2 template class, you'll find that the template is simply an evaluated set of PHP using the eval() function. You can either print the contents of the PHP before it is parsed using eval() and then use the variable name that the template gives, IE something like (which may not work depending how your template is setup):
CreateMyTable(((isset($this->_tpldata['.'][0]['FORUM_NAME'])) ? $this->_tpldata['.'][0]['FORUM_NAME'] : '' ),1000,randomcolor());
Please note, in order to do it similar to the way above you'd actually have to insert this into your template class.
An much better solution is to avoid using the mod that allows PHP in templates and use JavaScript in the templates to create the function, then print a call to that JavaScript function.
This will work:
CreateMyTable(FORUM_NAME,1000,red);
I also noticed that red is used without quotes - is this also a constant? If it's a variable it needs to have a $ in front of it. If it's a string it should be between quotes.
CreateMyTable(FORUM_NAME,1000,"red");
I'm trying to get some PHP example code to work on PHP version 5.3.4, Apache 2.2.17 on Windows.
The example says I need PHP 4.0 and above with CURL and contains:
<?
$function = $_GET['function-if-exist'];
$test = "Test";
?>
<? =$test ?>
I don't understand why I'm getting the following errors:
My PHP doesn't understand <? and wants <?PHP instead.
My PHP doesn't like <? =$test ?> and wants something like
<?PHP echo $test ?>
$function = $_GET['function-if-exist']; causes the error "Undefined index" but presumably works for the folks that developed it.
Can anyone help me understand why their code is not working for me?
1) <? is the "short tag". Most servers are configured to not allow short tags. This can be changed in php.ini.
2) Again, short tags. Also I think you can't have a space before the =, but the main problem is the short tags setting.
3) $_GET accesses the query string, so when loading your script you need myscript.php?function-if-exist=something
It is more ideal to check if the parameter is set before continuing to prevent errors being thrown, e.g.
if(isset($_GET['function-if-exist']))
{
$functionexists = $_GET['function-if-exist'];
}
the short tag notation is disabled in your php.ini
you need to remove the space before your equal sign
your _get array contains not the expected index, what url do you enter to access the page?
I don't understand why I'm getting the following errors:
My PHP doesn't understand
To be able to use short tags you will have to enable them via config ... http://www.tomjepson.co.uk/tutorials/35/enabling-short-tags-in-php.html
My PHP doesn't like and wants something like
Once you switch on the short tags you will be able to echo using ... important the equals signs must be touching the ? not variable.
$function = $_GET['function-if-exist']; causes the error "Undefined index" but presumably works for the folks that developed it.
The $_GET is populated according to what is in the url. To get a value in $_GET['function-if-exist'] the url accessing the script should be something like mydemo.php?function-if-exist=hello
Hope this helps you
Quick answers to 1 and 2 are enable the short_open_tag option into the php.ini file, for the last one is set the error_reporting to a less strict mode.
The reasons of not to adopt such measures are:
the short tag clashes with the xml declaration and is disabled on different host, if you need to manipulate xml or if you need to write portable code is better to resort to the long tag syntax. You lose the ability to echoing data with = but it is a small annoyance to me.
Warning and notices, as php forgive a lot the programmer for missing variables declaration are a blessing for debug. Keep then raised and you will address a lot of mispellings.
Are you sure that function-if-exist is a correct index for your hash? I would check the index first the access them. If the index don't exists is a probable hint that something is going wrong with your code and you should check the reason of the missing.
Better to stop now, as anyone can write a book on this topic, and several ones already done ;)
I've got PHP and HTML code stored in a database table. When I get this data, I need to echo the HTML and process the PHP. I thought I could use eval() for this, which works, if I do this eval("echo 'dlsj'; ?> EVALED "); I get "dlsjEVALED" printed out.
The problem is, I get a fatal error when I run longer scripts. Things like:
Parse error: syntax error, unexpected '<' in /home/content.php(18) : eval()'d code on line 1
Best advice - never store php and html code in your database. And avoid eval() like the plague.
I can't really tell what's wrong with your code, as you haven't provided enough information. But even if I did have some advice, I don't think I could give it in good conscience.
You should redesign your whole application so that it doesn't require storing such things in the database. I can't imagine why it would be necessary.
just right der...........
eval('?>' . $content .'<?php');
You need to re-open php mode after the EVALED. Apparently you have to do this with <? rather than the full <?php.
As a rule eval is to be avoided. But rules are made to be broken. There's a thread at When is eval evil in php? that gives some less dogmatic advice.
Depending on what you want to do, it might be suitable to use a template file that you source, with text that will vary stored in a local variable prior to sourcing the template.
As for storing code to be executed in the DB... this does happen in some frameworks like Drupal to provide convenient extensibility, but then Drupal is pretty thoroughly scoured for security weaknesses.
Also if you're writing self-modifying code then you need to use eval(). Not sure if anyone has done that in php but it would certainly be interesting.
I would guess that you're trying to eval() something that contains an opening <?php tag. And that leads to the error at hand.
$contents = htmlentities($contents);
echo html_entity_decode(eval($contents));