3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(''[0]); var_dump(''[1]);
Output for 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
Warning: Uninitialized string offset 0 in /in/f2L5X on line 3 string(0) "" Warning: Uninitialized string offset 1 in /in/f2L5X on line 4 string(0) ""
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 Warning: Uninitialized string offset 0 in /in/f2L5X on line 3 string(0) "" Warning: Uninitialized string offset 1 in /in/f2L5X on line 4 string(0) ""
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Uninitialized string offset: 0 in /in/f2L5X on line 3 string(0) "" Notice: Uninitialized string offset: 1 in /in/f2L5X on line 4 string(0) ""
Output for 7.3.32 - 7.3.33, 7.4.26
string(0) "" string(0) ""

preferences:
156.38 ms | 401 KiB | 218 Q