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phpfunctionechostr-replace
Walrus
Walrus

Reputation: 20444

PHP Str_replace for echo function

The following function is part of code written into the core of a plugin I am reverse engineering. The problem with it is that I need to do an str_replace on it and I cannot because it is already set to echo.

The function is.

function similar_posts($args = '') {
    echo SimilarPosts::execute($args);
}

I call it in my pages using similar_posts(), but what I really need to do in my theme is call $related = similar_posts(), however that function is set to echo. How do I change that.

I tried this.

 function get_similar_posts($args = '') {
        SimilarPosts::execute($args);
    }

But that did not produce any results.

Upvotes: 1

Views: 457

Answers (6)

Filip Roséen
Filip Roséen

Reputation: 63797

If you want to use the value SimilarPosts::execute ($args) returns, you'll need to use the keyword 'return' inside your get_similar_posts.

function get_similar_posts ($args = '') {
  return SimilarPosts::execute($args);
}

If you are unable to change the definition of get_similar_posts there are ways to snatch the content printed by similar_posts even though it's "set to echo".

This can be accompished by using the Output Control Functions available in PHP.

function echo_hello_world () {
  echo "hello world";
}

$printed_data = ""; 

ob_start (); 
{
  echo_hello_world (); 

  $printed_data = ob_get_contents (); 
}
ob_end_clean (); 

echo "echo_hello_world () printed '$printed_data'\n";

output

echo_hello_world () printed 'hello world'

Upvotes: 2

GordonM
GordonM

Reputation: 31730

function get_similar_posts($args = '') {
    return (SimilarPosts::execute($args));
}

Upvotes: 2

Michael Berkowski
Michael Berkowski

Reputation: 270607

return from the function:

function get_similar_posts($args = '') {
     return  SimilarPosts::execute($args);
}

Upvotes: 1

user529649
user529649

Reputation:

Use return instead of echo.

So that you have:

 return SimilarPosts::execute($args);

instead of:

 echo SimilarPosts::execute($args);

Upvotes: 1

Walrus
Walrus

Reputation: 20444

Done it..

function get_similar_posts($args = '') {
    return SimilarPosts::execute($args);
}

and on the page get_similar_posts();

Should have thought of that.

Upvotes: 1

JRL
JRL

Reputation: 77995

Wrap the function inside another in which you use output buffering.

Upvotes: 1

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