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run code in 300+ PHP versions simultaneously
<?php function foo( &$arg1, &$arg2 ) { var_dump( $arg1, $arg2 ); } $a = 1; $b = 2; call_user_func_array( 'foo', array( &$a, &$b ) );
based on JDcqk
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.24, 7.4.0 - 7.4.12, 8.0.0
int(1) int(2)