Implode inside str replace

Not working

[Sub_Seven]

Hello people,

Anyone could be so kind to explain to me why this is not working

This line:

$search = "'{{" . implode("}}', '{{", $content_element_id_array) . "}}'";

Produces this string:

'{{1}}', '{{2}}'

This str_replace works fine:

str_replace(['{{1}}', '{{2}}'], ['THIS BE 1', 'THIS BE 2'], $cms_section_content_data->content);

But when I try to replace the search string for the variable $search, it doesn't work:

str_replace([$search], ['THIS BE 1', 'THIS BE 2'], $cms_section_content_data->content);

Can someone tell me where's the problem here?

Thanks so much!

[whitespace]

Because $search is a string and [$search] is a single element array containing your string. Whereas in your first str_replace() which works, ['{{1}}', '{{2}}'] is an array of 2 string elements: '{{1}}' and '{{2}}'. [$search] is equivalent to ["'{{1}}', '{{2}}'"].

$search should be an array, not a string. And then just pass $search as the first argument to str_replace(), not [$search].

[whitespace]

For example, you could do this with array_map() and an anonymous function, rather than implode():

$search = array_map(
  function($value) {
    return '{{'.$value.'}}';
  }, $content_element_id_array);

print_r($search);

Array ( 
  [0] => {{1}} 
  [1] => {{2}} 
) 

[Sub_Seven]

It works great :)

Thanks so much whitespace!