3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test_1($arg_1, $arg_2) { return $arg_1 + $arg_2; } $a = 1; $b = 2; $result = test_1($a, $b); echo $result; $test_array = [1,3,5,7]; foreach($test_array as &$var){ $result_1 = $var; $result_2 = &$result_1; $result_2 = $var + 1; echo 'result_1 = '.$result_1.' var = '.$var."\n\n"; }
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
3result_1 = 2 var = 1 result_1 = 4 var = 3 result_1 = 6 var = 5 result_1 = 8 var = 7
preferences:
137.97 ms | 404 KiB | 182 Q