Solved

Passing simple php value in Wordpress single.php file

Posted on 2011-02-20
15
1,001 Views
Last Modified: 2012-05-11
These 2 lines:

$str = get_post_meta($post->ID, $key, true);
echo 'str is '.$str;

output this:
"str is http://www.site.com/-dan-baker.mp3 6787576 audio/mpeg"

That has been TESTED on my wordpress single.php file.

The original code is attached bellow, it returns the mp3 URL inside the string BUT it works fine ONLY if I provide $str value direct, like this: $str = "http://www.site.com/-dan-baker.mp3 6787576 audio/mpeg"

If I provide it like this: $str = get_post_meta($post->ID, $key, true); then $file will return empty.

Why? I am 100% sure get_post_meta($post->ID, $key, true) is returning the string.

I hope you understand.
Thank you.




<?php

// Code tested on wordpress file single.php

$key="enclosure";
$str = get_post_meta($post->ID, $key, true);
echo 'str is '.$str; //this output: str is http://www.site.com/-dan-baker.mp3 6787576 audio/mpeg

$split_at_space=explode(" ",$str);
$mimetype=array_pop($split_at_space);
$numbers=array_pop($split_at_space);
$file=join(" ",$split_at_space);
echo "\n";

echo 'File:'.$file;
?>

Open in new window

0
Comment
Question by:Fernanditos
  • 8
  • 6
15 Comments
 
LVL 27

Expert Comment

by:Lukasz Chmielewski
ID: 34937971
Are you sure there are no whitespaces characters ? Trim the $str.
$str = trim(get_post_meta($post->ID, $key, true));
0
 

Author Comment

by:Fernanditos
ID: 34938013
Yes there are white spaces:

$str = "http://www.site.com/-dan-baker.mp3 6787576 audio/mpeg"

the crazy thing is that it works perfect if I assign the value to $str manually, like above.

But if I assign it this way: $str = get_post_meta($post->ID, $key, true); then $file return empty.

and again: I have test get_post_meta($post->ID, $key, true); is returning the same string.

Any idea?
0
 

Author Comment

by:Fernanditos
ID: 34938042
Look, I will post here the real code here and I take screeshot code result, this will clear any doubt:

result of attached code
<?php
$key="enclosure";
$str = get_post_meta($post->ID, $key, true);
echo 'str: '.$str; 

$split_at_space=explode(" ",$str);
$mimetype=array_pop($split_at_space);
$numbers=array_pop($split_at_space);
$file=join(" ",$split_at_space);
echo "<br/>";

echo 'File:'.$file;
?>

Open in new window

0
 
LVL 27

Expert Comment

by:Lukasz Chmielewski
ID: 34938048
Maybe the get_post_meta($post->ID, $key, true); ECHOES the string instead of returning a string value ?
0
 
LVL 27

Expert Comment

by:Lukasz Chmielewski
ID: 34938056
try doing it this way:
$str = echo get_post_meta($post->ID, $key, true);
0
 
LVL 27

Expert Comment

by:Lukasz Chmielewski
ID: 34938085
I was thinking about the whitespaces at the both ends of the returned string. This would cause the splitting function return incorrect results.

One more thing, what does this do:

<?php
$key="enclosure";
$str = get_post_meta($post->ID, $key, true);
echo 'str: '.$str; 

$split_at_space=explode(" ",$str);
$mimetype=array_pop($split_at_space);
$numbers=array_pop($split_at_space);

print_r($split_at_space);

$file=join(" ",$split_at_space);
echo "<br/>";

echo 'File:'.$file;
?>

Open in new window

0
 

Author Comment

by:Fernanditos
ID: 34938254
@Roads
Maybe the get_post_meta($post->ID, $key, true); ECHOES the string instead of returning a string value ?

Yes this has sense, I tried: $str = echo get_post_meta($post->ID, $key, true);  but I get syntax error, unexpected T_ECHO.

The second last solution you posted not woring, return this:
 result last solution by Roads
0
Why You Should Analyze Threat Actor TTPs

After years of analyzing threat actor behavior, it’s become clear that at any given time there are specific tactics, techniques, and procedures (TTPs) that are particularly prevalent. By analyzing and understanding these TTPs, you can dramatically enhance your security program.

 
LVL 27

Expert Comment

by:Lukasz Chmielewski
ID: 34938404
Well, it does work. It points that the $split_at_space is an empty array after poping

$split_at_space=explode(" ",$str);
echo"after exploding: ";
print_r($split_at_space);
$mimetype=array_pop($split_at_space);
$numbers=array_pop($split_at_space);

echo"$mime_type, $numbers";

Open in new window


What does this show ?
0
 
LVL 27

Accepted Solution

by:
Lukasz Chmielewski earned 500 total points
ID: 34938416
If this shows Array () again, try like this

$str = echo "".get_post_meta($post->ID, $key, true);

but it seems very strange - assigning should work like this
$str = get_post_meta($post->ID, $key, true);
if this shows us that the $str is empty - then the function get_post_meta($post->ID, $key, true); returns nothing.
0
 

Author Comment

by:Fernanditos
ID: 34938478
I think you missunderstood something:

"you said: if this shows us that the $str is empty - then the function get_post_meta($post->ID, $key, true); returns nothing."

URL result that you see printed is the returned value of get_post_meta($post->ID, $key, true); SO this is not returning empty. See my code.

Notice that in my screenshot, I have 2 outputs: $str and $file

my problem is with $file that is returning EMPTY.

this is the most strange thing I have ever seen.
0
 

Author Comment

by:Fernanditos
ID: 34938513
I just can NOT capture the value returned by get_post_meta($post->ID, $key, true); into a variable.

I can just print it like: echo get_post_meta($post->ID, $key, true);

does this makes sense for you?
0
 

Author Comment

by:Fernanditos
ID: 34938534
I think this issue is relate to the nature of get_post_meta of wordpress: http://codex.wordpress.org/Using_Custom_Fields

no idea.
0
 
LVL 27

Expert Comment

by:Lukasz Chmielewski
ID: 34938594
You would have to find the file where the function is stored to see what it returns.
0
 
LVL 27

Expert Comment

by:Lukasz Chmielewski
ID: 34938647
Change true to false
get_post_meta($post->ID, $key, false);
0
 
LVL 108

Expert Comment

by:Ray Paseur
ID: 34938841
Please do this for us:

$str = get_post_meta($post->ID, $key, true);
var_dump($str);

And show us the var_dump() output.  It will tell the data type as well as the contents.  Use "view source" and copy the relevant lines, then post them here in the code snippet.  Thanks, ~Ray
0

Featured Post

Threat Intelligence Starter Resources

Integrating threat intelligence can be challenging, and not all companies are ready. These resources can help you build awareness and prepare for defense.

Join & Write a Comment

Envision that you are chipping away at another e-business site with a team of pundit developers and designers. Everything seems, by all accounts, to be going easily.
This article discusses four methods for overlaying images in a container on a web page
The viewer will learn how to look for a specific file type in a local or remote server directory using PHP.
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…

706 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now