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run code in 300+ PHP versions simultaneously
<?php class MyStream { public function stream_open() { return true; } public function stream_read() { throw new Exception('boo!'); return 42; } public function stream_eof() { return true; } } try { stream_wrapper_register("my", "MyStream"); $fp = fopen('my://foobar', 'r+'); fread($fp, 512); } catch (Exception $e) { echo 'e'; }

preferences:
34.33 ms | 402 KiB | 5 Q