How can the presence of both \n and \r characters in textareas affect the manipulation of strings in PHP?

The presence of both \n and \r characters in textareas can affect the manipulation of strings in PHP, especially when dealing with line breaks. To solve this issue, you can use the PHP function `str_replace` to replace both \n and \r characters with a single line break character (\n). This will ensure consistent handling of line breaks in the text. 

$text = $_POST['textarea']; // Assuming the textarea input is submitted via POST
$text = str_replace(array("\r\n", "\r", "\n"), "\n", $text);
echo $text; // Output the text with consistent line breaks

Keywords

PHP strings manipulation \n \r

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