stripcslashes does not simply skip the C-style escape sequences \a, \b, \f, \n, \r, \t and \v, but converts them to their actual meaning. 
So
<?php
stripcslashes('\n') == "\n"; //true;
$str = "we are escaping \r\n"; //we are escaping
?>(PHP 4, PHP 5, PHP 7, PHP 8)
stripcslashes — Remove o escape de strings escapadas com addcslashes()
   Retorna uma string com as barras invertidas retiradas. Reconhece
   represenações no estilo C \n, \r ..., octais
   e hexadecimais.
  
stringA string para remover os escapes.
Retorna a string com escapes retirados.
Exemplo #1 Exemplo de stripcslashes()
<?php
var_dump(stripcslashes('I\'d have a coffee.\nNot a problem.') === "I'd have a coffee.
Not a problem."); // verdadeiro
?>stripcslashes does not simply skip the C-style escape sequences \a, \b, \f, \n, \r, \t and \v, but converts them to their actual meaning. 
So
<?php
stripcslashes('\n') == "\n"; //true;
$str = "we are escaping \r\n"; //we are escaping
?>