3v4l.org

run code in 500+ PHP versions simultaneously
<?php function foo ($bar = "bar", $baz) { var_dump($bar, $baz); } foo(null, "BAZ");
Output for 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Deprecated: foo(): Optional parameter $bar declared before required parameter $baz is implicitly treated as a required parameter in /in/MGWIR on line 3 NULL string(3) "BAZ"
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.4, 8.3.6 - 8.3.30
Deprecated: Optional parameter $bar declared before required parameter $baz is implicitly treated as a required parameter in /in/MGWIR on line 3 NULL string(3) "BAZ"
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: Optional parameter $bar declared before required parameter $baz is implicitly treated as a required parameter in /in/MGWIR on line 3 NULL string(3) "BAZ"
Output for 8.0.0 - 8.0.30
Deprecated: Required parameter $baz follows optional parameter $bar in /in/MGWIR on line 3 NULL string(3) "BAZ"
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
NULL string(3) "BAZ"
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