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  1. <?php
  2.     $str = 'Henry J Doe';
  3.     $repl = preg_replace('/([A-Z])(?=\s|$)/', '\1.', $str);
  4.     echo $repl . "\n";
  5. ?>
Success #stdin #stdout 0.01s 20568KB
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stdin 
Standard input is empty
stdout 
Henry J. Doe
https://ideone.com/gqVKIG
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

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