3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(base_convert(-781595183,10,36));
Output for 7.4.0 - 7.4.25, 7.4.27 - 7.4.30, 8.0.0 - 8.0.20, 8.1.0 - 8.1.7
Deprecated: Invalid characters passed for attempted conversion, these have been ignored in /in/5jdrP on line 3 string(6) "cxcapb"
Output for 7.3.0 - 7.3.33, 7.4.26
string(6) "cxcapb"

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