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  1. <?php
  2. $regex = '~(?<=[a-zA-Z])(?=[A-Z])~';
  3. echo strtolower(preg_replace($regex,"-","HelloWorldThisIsATest"));
Success #stdin #stdout 0.01s 20568KB
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Standard input is empty
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hello-world-this-is-a-test
https://ideone.com/iy9eTc
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
secret

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