Replace \n with '' by using str_replace() in PHP

Question

I have the following code

$s = '\n [email protected] \n ';
$s = str_replace('\n', '', $s);

echo $s;

I want to replace the '\n' char with '' but it's not working with the above code. I have found that as \n is the new line char with ascii value 10 by echo ord(substr($s, 0, 1)); it is not working. It's not clear to me what is the exact reason behind not working the above code. please help.

Check out php.net/manual/en/language.types.string.php - it explains the different ways strings can be specified in PHP. Also trim() might be the function you're after instead of str_replace(). — Steve
– Steve, Commented Nov 8, 2016 at 12:49

Manthan Dave · Accepted Answer · 2016-11-08 12:55:49Z

34

You need to place the \n in double quotes. Inside single quotes it is treated as 2 characters '\' followed by 'n'

Try below code:

$s = "\n [email protected] \n";
$s = str_replace("\n", '', $s);

echo $s;

edited Nov 8, 2016 at 12:55

answered Nov 8, 2016 at 12:43

Manthan Dave

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2 Comments

Steve Over a year ago

First line should also use double quotes - current code won't change the string at all.

Manthan Dave Over a year ago

yes there is typo , updated the answer thanks @steve

Christoph Hösler · Accepted Answer · 2016-11-08 12:53:21Z

5

You have to use double quotes. \n is not interpreted as newline with single quotes.

answered Nov 8, 2016 at 12:53

Christoph Hösler

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