3v4l.org

run code in 300+ PHP versions simultaneously
<?php function func( &$ref ) { echo "ok\n"; } $obj = (object)[]; $params = [ &$obj ]; echo "Before unset: "; call_user_func_array( 'func', $params ); unset( $obj ); echo "After unset: "; call_user_func_array( 'func', $params );
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.14, 8.4.1
Before unset: ok After unset: ok
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Before unset: ok After unset: Warning: Parameter 1 to func() expected to be a reference, value given in /in/dlubp on line 14
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/dlubp on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/dlubp on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/dlubp on line 5
Process exited with code 255.
preferences:
98.81 ms | 411 KiB | 5 Q