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run code in 300+ PHP versions simultaneously
<?php $variable = range(1, 1000); echo memory_get_peak_usage(true), PHP_EOL; function foo(&$var) { return bar($var); } function bar($var) { return is_array($var); } foo($variable); echo memory_get_peak_usage(true);
Output for git.master, git.master_jit, rfc.property-hooks
2097152 2097152

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