3v4l.org

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<?php $value = 5; $false = false; $empty = ''; $null = null; echo $null ?? $value; echo $notSet ?? null ?? $value; echo $null ?? $zero ?? $value; var_dump($false ?? $value); var_dump($empty ?? $value);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 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
555bool(false) 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 555bool(false) string(0) ""
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.21
Parse error: syntax error, unexpected '?' in /in/vCi9L on line 8
Process exited with code 255.
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131.77 ms | 402 KiB | 180 Q