3v4l.org

run code in 300+ PHP versions simultaneously
<?php function swapOffsets(array $array, $offset1, $offset2) { $keys = array_keys($array); $key1 = $keys[$offset1]; $key2 = $keys[$offset2]; $value1 = $array[$key1]; $value2 = $array[$key2]; array_splice($array, $offset1, 1, array($key2 => $value2)); array_splice($array, $offset2, 1, array($key1 => $value1)); return $array; } var_dump(swapOffsets(['a' => 1, 'b' => 2, 'c' => 3], 0, 2));
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 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 - 7.3.33, 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
array(3) { [0]=> int(3) ["b"]=> int(2) [1]=> int(1) }
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/Nj47T on line 16
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/Nj47T on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/Nj47T on line 3
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
Parse error: parse error, unexpected T_ARRAY, expecting ')' in /in/Nj47T on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/Nj47T on line 3
Process exited with code 255.

preferences:
306.8 ms | 401 KiB | 460 Q