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run code in 300+ PHP versions simultaneously
<?php $words = array('me' => array('class'=> 'pronoun'), 'victor' => array('class'=> 'noun'), 'john' => array('class'=> 'noun')); print_r(array_flip($words));
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: array_flip(): Can only flip string and integer values, entry skipped in /in/uQqHa on line 4 Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/uQqHa on line 4 Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/uQqHa on line 4 Array ( )
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: array_flip(): Can only flip string and integer values, entry skipped in /in/uQqHa on line 4 Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/uQqHa on line 4 Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/uQqHa on line 4 Array ( )
Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/uQqHa on line 4 Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/uQqHa on line 4 Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/uQqHa on line 4 Array ( )

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154.25 ms | 403 KiB | 170 Q