How Can I Remove Newlines from a String in PHP While Avoiding Double Spaces?

Eliminating Newlines from Strings with a Space

To remove all newlines from a string, we can utilize a combination of regular expressions and PHP functions.

Given the input:

$string = "<br>put returns between paragraphs</p>
<p>for linebreak add 2 spaces at end</p>
<p>";<br>

We aim to output:

$string = "put returns between paragraphs for linebreak add 2 spaces at end ";<br>

We can achieve this by harnessing the following regex:

/rn|r|n/<br>

However, we must consider the possibility of double line breaks leading to double spaces. To avoid this, we utilize a more efficient regex:

$string = trim(preg_replace('/ss /', ' ', $string));<br>

This regex eliminates multiple spaces and newlines, replacing them with a single space. While it works well for our specific example, it may encounter issues when handling single newlines between words.

As an alternative, we can opt for this solution:

$string = trim(preg_replace('/s /', ' ', $string));<br>

This variation addresses the aforementioned issue by matching any number of spaces and replacing them with a single space.

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