3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=[]; $a[1]="foo"; $a[1.5]="bar"; var_dump($a);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Deprecated: Implicit conversion from float 1.5 to int loses precision in /in/319M1 on line 5 array(1) { [1]=> string(3) "bar" }
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 Deprecated: Implicit conversion from float 1.5 to int loses precision in /in/319M1 on line 5 array(1) { [1]=> string(3) "bar" }
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
array(1) { [1]=> string(3) "bar" }

preferences:
186.9 ms | 402 KiB | 189 Q