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<?php
$string = "
put returns between paragraphs
 
for linebreak add 2 spaces at end
 
";
 
echo "Before\n-------------\n" . $string;
$string = preg_replace('~[\r\n]~', '', $string);
echo "After\n-------------\n" . $string;
 
?>

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• # 5:   hide show   clone   input   9 days 14 hours ago    Success

  result: Success     time: 0.01s    memory: 20520 kB     returned value: 0

  input:

  teststring
  bla

  output:

  Before
  -------------
  
  put returns between paragraphs
  
  for linebreak add 2 spaces at end
  
  After
  -------------
  put returns between paragraphsfor linebreak add 2 spaces at end
• # 4:   hide show   clone   input   43 days 9 hours ago    Success

  result: Success     time: 0.01s    memory: 20568 kB     returned value: 0

  input:

  $string = str_replace(array("\n", "\r"), '', $string);

  output:

  Before
  -------------
  
  put returns between paragraphs
  
  for linebreak add 2 spaces at end
  
  After
  -------------
  put returns between paragraphsfor linebreak add 2 spaces at end
• # 3:   hide show   clone   input   72 days 12 hours ago    Success

  result: Success     time: 0.01s    memory: 20568 kB     returned value: 0

  input:

  hi
  lfmv
  
  
  ;lkmrfl
  
  
  sdorfp

  output:

  Before
  -------------
  
  put returns between paragraphs
  
  for linebreak add 2 spaces at end
  
  After
  -------------
  put returns between paragraphsfor linebreak add 2 spaces at end
• # 2:   hide show   clone   input   72 days 12 hours ago    Success

  result: Success     time: 0.01s    memory: 20568 kB     returned value: 0

  input:

  fgb fgfbg drgfg

  output:

  Before
  -------------
  
  put returns between paragraphs
  
  for linebreak add 2 spaces at end
  
  After
  -------------
  put returns between paragraphsfor linebreak add 2 spaces at end
• # 1:   hide show   clone   input   974 days 12 hours ago    Success

  result: Success     time: 0s    memory: 13112 kB     returned value: 0

  input: no
  output:

  Before
  -------------
  
  put returns between paragraphs
  
  for linebreak add 2 spaces at end
  
  After
  -------------
  put returns between paragraphsfor linebreak add 2 spaces at end