Question

How to convert lines in a multiline string starting with some "#" to start and end with "_" in PHP

Answer 1

$str = "###Word1 Word2\nWord3\nWord4 Word5 Word6\n##Word7\n#Word8 Word9\n";

// Use preg_replace to replace the pattern with the desired format
$str = preg_replace('/#+(.*)\n/', '_$1_' . "\n", $str);

echo $str;


  
/*
run:
      
_Word1 Word2_
Word3
Word4 Word5 Word6
_Word7_
_Word8 Word9_

*/

 

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