PHP - Replace new lines with single space in string

[PloMar]

Hello
How can I replace the new lines with a single space in a string in PHP?
For example I have this $str variable with a string content with multiple lines:

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$str = 'First line
Second row
Other line ...'; 

And I want to result this $str string:

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$str = 'First line Second row Other line ...'; 

You can use str_replace() with PHP_EOL.
Example:

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$str = 'First line
Second row
Other line ...';
$str = str_replace(PHP_EOL, ' ', $str);
echo $str; 

Or preg_replace() with RegExp.
Example (will replace also multiple white spaces with single space):

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$str = 'First line
Second row      
Other line ...';
$str = preg_replace('/\s+/', ' ', trim($str));;
echo $str;