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run code in 300+ PHP versions simultaneously
<?php $a = null; $c = ''; print $a ?? 'b'; print "\n"; print $a ?: 'b'; print "\n"; print $c ?? 'a'; print "\n"; print $c ?: 'a'; print "\n"; $b = array('a' => null); print $b['a'] ?? 'd'; print "\n"; print $b['a'] ?: 'd'; print "\n"; print $b['c'] ?? 'e'; print "\n"; print $b['c'] ?: 'e'; print "\n";
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
b b a d d e Warning: Undefined array key "c" in /in/YAXZs on line 29 e
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 b b a d d e Warning: Undefined array key "c" in /in/YAXZs on line 29 e
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
b b a d d e Notice: Undefined index: c in /in/YAXZs on line 29 e
Output for 7.3.32 - 7.3.33
b b a d d e e
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/YAXZs on line 6
Process exited with code 255.
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