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run code in 300+ PHP versions simultaneously
<?php $array = ["a" => "one", "b" => "two", "c" => "three"]; if (!function_exists("array_key_last")) { echo "Please upgrade to php 7.3"; } else { echo "First Key: " , key($array) , "\n"; echo "Last Key: " , array_key_last($array) , "\n"; next($array); echo "Second Key: " , key($array) , "\n"; echo "Last Key: " , array_key_last($array); }
Output for 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 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
First Key: a Last Key: c Second Key: b Last Key: c
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 First Key: a Last Key: c Second Key: b Last Key: c
Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33
Please upgrade to php 7.3
preferences:
172.87 ms | 402 KiB | 177 Q