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  1. <?php
  2.  
  3. $input = 'z-edu-l1-^threat -emergency mk pl.jpg';
  4. echo strtolower(preg_replace('/[^\w.-]/', '_', trim($input)));
Success #stdin #stdout 0.01s 82624KB
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z-edu-l1-_threat_-emergency_mk_pl.jpg
https://ideone.com/5QtiD6
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
secret

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