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run code in 300+ PHP versions simultaneously
<?php ob_start('callbackfunc'); echo 'test test test test test test test test test '; function callbackfunc($buffer) { $DB = new SQLite3('db'); $DB->exec('CREATE TABLE test (one int, two text);'); $DB->exec('INSERT INTO test VALUES (10, \'some text\')'); return $buffer; }
Output for 4.3.3 - 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, 5.4.7 - 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

Process exited with code 255.
Output for 4.3.0 - 4.3.2, 5.4.0 - 5.4.6
preferences:
325.88 ms | 402 KiB | 460 Q