3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 65; $b = ~$a + 1; // get 2s complement echo $b,"\n"; printf("0x%x\n",$b); $c = base_convert($b,10,2); echo $c,"\n"; $i = intval($c,2); echo $i;
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
-65 0xffffffffffffffbf Deprecated: Invalid characters passed for attempted conversion, these have been ignored in /in/BUsfP on line 6 1000001 65
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 -65 0xffffffffffffffbf Deprecated: Invalid characters passed for attempted conversion, these have been ignored in /in/BUsfP on line 6 1000001 65
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33
-65 0xffffffffffffffbf 1000001 65
preferences:
207.56 ms | 402 KiB | 183 Q