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  1. <?php
  2.  
  3. $str = 'www.domain.com?adult=2&airport=40-48?destination=recko';        
  4. echo preg_replace('/^[^?]*\?(*SKIP)(*F)|[?]/', '&', $str );
Success #stdin #stdout 0.03s 52480KB
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www.domain.com?adult=2&airport=40-48&destination=recko
https://ideone.com/Pks2aN
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
secret

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