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<?php function func1( &$ref ) { function ref( &$ref ) { var_dump( $ref ); } $func = 'ref'; ref( $ref ); $func( $ref ); call_user_func_array( $func, array( &$ref ) ); call_user_func( $func, $ref ); } $var = array(); func1( $var );
based on fESuN
Output for 8.0.0 - 8.0.3
array(0) { } array(0) { } array(0) { } Warning: ref(): Argument #1 ($ref) must be passed by reference, value given in /in/p9E7N on line 13 array(0) { }
Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.27, 7.4.0 - 7.4.16
array(0) { } array(0) { } array(0) { } Warning: Parameter 1 to ref() expected to be a reference, value given in /in/p9E7N on line 13 array(0) { }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.24, 7.0.0 - 7.0.8, 7.0.20
array(0) { } array(0) { } array(0) { } array(0) { }
Output for 7.0.9
array(0) { } array(0) { } array(0) { } Warning: Parameter 1 to ref() expected to be a reference, value given in /in/p9E7N on line 13