John Davidson

Message:

I'm trying to remove extra lines between the texts and here is what I tried:

<?php

echo preg_replace("/^\s+/", "\n", $_POST["description"]);

The input:

The output:

I tried the same regular expression on regex101 and here is the result:

As you can see nothing changed when I executed the regular expression using PHP, But it is working as what I want when using the regex101 website.

The current PHP version is 7.4.28.

Did I miss something?

---

My Answer:
It looks like you are using the wrong regular expression pattern in your preg_replace function. The pattern "/^\s+/" is used to match one or more whitespace characters at the beginning of a line, but it does not remove extra lines between the texts.

To remove extra lines between the texts, you can use the following regular expression pattern:

php
echo preg_replace("/\n{2,}/", "\n", $_POST["description"]);


This pattern matches two or more consecutive newline characters and replaces them with a single newline character, effectively removing the extra lines between the texts.

Try using this pattern in your preg_replace function and see if it gives you the desired output.