Why Doesn't '\r\n' Create a Newline in Single-Quoted PHP Strings?

Creating a Newline Character in PHP

In the pursuit of creating a newline character in PHP, a user encounters a surprising behavior: the sequence 'rn' is rendered as a literal string rather than the expected newline. This issue stems from the use of single-quoted strings.

Single-quoted strings in PHP only recognize two escape sequences: and '. Therefore, the newline escape sequences r and n are not interpreted within single quotes.

Solution:

To create a newline character using a single-quoted string, it must be concatenated with a newline generated elsewhere. This can be achieved using double-quoted strings (e.g., "rn") or the chr function (chr(0x0D).chr(0x0A)).

Alternatively, the newline can be manually typed into the code:

$s = 'some text before the line break
some text after';

Editor Settings:

It is important to check the line break settings of your text editor to ensure that it matches the desired output.

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