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run code in 300+ PHP versions simultaneously
<?php $out = []; $in = [5]; $out[] = $in; $in = [6]; $out[] = $in; $in = [7]; var_export($out); var_export($in);
Output for 7.0.0 - 7.0.24, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 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
array ( 0 => array ( 0 => 5, ), 1 => array ( 0 => 6, ), )array ( 0 => 7, )
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 array ( 0 => array ( 0 => 5, ), 1 => array ( 0 => 6, ), )array ( 0 => 7, )

preferences:
165.75 ms | 402 KiB | 194 Q