[lang-ref] ( trim_trailing_newline_characters ) ( php )

<?php
public function testTrimTrailingNewlineCharacters(): void
{
	// rtrim($s, "\r\n")
	$lineLf       = "abc  def   \n";
	$lineCrlf     = "abc  def   \r\n";
	$lineCr       = "abc  def   \r";
	$lineExpected = 'abc  def   ';

	$this->assertSame($lineExpected, rtrim($lineLf, "\r\n"));
	$this->assertSame($lineExpected, rtrim($lineCrlf, "\r\n"));
	$this->assertSame($lineExpected, rtrim($lineCr, "\r\n"));
}