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  1. <?php
  2.  
  3. $str = '\\\\a';
  4. echo $str . PHP_EOL;
  5. $r   = preg_replace('~\\\\~s', '*', $str);
  6. echo $r;
Success #stdin #stdout 0.02s 52432KB
comments (?)
stdin 
Standard input is empty
stdout 
\\a
**a
https://ideone.com/UYRBoE
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
secret

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