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run code in 300+ PHP versions simultaneously
<?php function foo($a) { $page = isset($a['page']) ? $a['page'] : 1; echo $page, "\n"; $page = $a['page'] ?? 1; echo $page, "\n"; } $a = array(); foo($a); $a = array('page' => Null); foo($a); $a = array('page' => 0); foo($a); $a = array('page' => 3); foo($a); ?>
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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
1 1 1 1 0 0 3 3
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 1 1 1 1 0 0 3 3
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Parse error: syntax error, unexpected '?' in /in/kL1KS on line 8
Process exited with code 255.

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