What are the potential pitfalls of using "\r" versus "\n" when replacing line breaks in PHP?

Using "\r" instead of "\n" when replacing line breaks in PHP can lead to compatibility issues on different operating systems. "\r" represents a carriage return character, which is typically used in older Mac OS systems, while "\n" represents a line feed character used in Unix-based systems. To ensure cross-platform compatibility, it's best to use PHP's PHP_EOL constant, which automatically detects the correct line break character for the current operating system. 

// Replace line breaks with PHP_EOL for cross-platform compatibility
$text = "Hello\rWorld";
$text = str_replace(["\r", "\n"], '', $text);
echo $text;

Keywords

PHP line breaks \r \n pitfalls

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