3v4l.org

run code in 300+ PHP versions simultaneously
<?php function tester( array &$error ) { $error = [ 'text' => 'nothing found' ]; return true; } $e = null; $error = []; $error[] =& $e; call_user_func( 'tester', $error ); var_dump( $error );
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Warning: tester(): Argument #1 ($error) must be passed by reference, value given in /in/84v2o on line 12 array(1) { [0]=> &NULL }
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: tester(): Argument #1 ($error) must be passed by reference, value given in /in/84v2o on line 12 array(1) { [0]=> &NULL }
Output for 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Parameter 1 to tester() expected to be a reference, value given in /in/84v2o on line 12 array(1) { [0]=> &NULL }

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