3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types=1); $file = new SplTempFileObject(); // write to file for ($i = 0; $i < 5; $i++) { $file->fwrite("line {$i}" . PHP_EOL); } $file->rewind(); $file->next(); echo $file->key(), ': ', $file->current();
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
1: line 0
preferences:
126.15 ms | 407 KiB | 5 Q