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run code in 300+ PHP versions simultaneously
<?php $str = 'original'; $refArray = [&$str]; $filtered = array_filter($refArray, fn () => true); $filtered[0] = 'MODIFIED'; echo $str; // array_filter preserves the reference!
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.26, 8.4.1 - 8.4.13
MODIFIED
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 MODIFIED
Output for 7.3.0 - 7.3.33
Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW), expecting ')' in /in/oR8c6 on line 5
Process exited with code 255.
preferences:
112.81 ms | 408 KiB | 5 Q