3v4l.org

run code in 300+ PHP versions simultaneously
<?php $input = <<<DATA {"foo": 1, "bar": "hello"} {"foo": 2, "bar": "cruel"} {"foo": 3, "bar": "world"} [1,2,3,4] DATA; $output = '[' . preg_replace('/([\]}])\s*([{[])/', '$1,$2', $input) . ']'; echo $output;
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, 5.5.24 - 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, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.21, 8.3.0 - 8.3.9
[{"foo": 1, "bar": "hello"},{"foo": 2, "bar": "cruel"},{"foo": 3, "bar": "world"},[1,2,3,4]]

preferences:
254.36 ms | 406 KiB | 321 Q