3v4l.org

run code in 300+ PHP versions simultaneously
<?php function fdopen($id, $mode) { return fopen("/proc/self/fd/".(int)$id, $mode); } $stdin = fopen('php://stdin', 'r'); echo $stdin; for ($i = 1; $i <= 10; $i++) { echo $i; } echo fgets(STDIN);
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 - 7.3.33, 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 - 8.3.7
Resource id #512345678910
preferences:
177.14 ms | 404 KiB | 289 Q