Let’s say the following is our string with new line
$sentence = " My name is John Smith My Favorite subject is PHP. ";
We need to remove the new line above and replace with a whitespace i.e. the output should be −
My name is John Smith My Favourite subject is PHP.
For this, use trim() and withing that preg_replace() to replace.
Example
The PHP code is as follows
<!DOCTYPE html>
<html>
<body>
<?php
$sentence = "
My name is John Smith
My Favorite subject is PHP.
";
$sentence = trim(preg_replace('/\s\s+/', ' ', $sentence));
echo $sentence;
?>
</body>
</html>Output
This will produce the following output
My name is John Smith My Favorite subject is PHP.