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  1. <?php
  2.  
  3. $str = "    Toronto (YTZ)\n     to\n     Montreal (YUL)";
  4. $str = preg_replace('/\n+(?=.)/', " ", preg_replace('/^\s*/m', "", $str));
  5. print "'$str'";
  6.  
  7. ?>
Success #stdin #stdout 0.02s 13064KB
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'Toronto (YTZ) to Montreal (YUL)'
https://ideone.com/BbVJE
language:
PHP (php 7.3.5)
created:
13 years ago
visibility:
public

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