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run code in 300+ PHP versions simultaneously
<?php $str = 'hey'; str_replace($str, 'e', 'ea'); var_dump($str);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
string(3) "hey"

preferences:
155.52 ms | 403 KiB | 159 Q