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run code in 150+ php & hhvm versions
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<?php class DbSwitcher { function __construct() { print "switch DB\n"; } function __destruct() { print "switch back\n"; } } function foo() { $switched = new DbSwitcher(); echo "do queries\n"; } foo();
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
switch DB do queries switch back
Output for 4.3.0 - 4.4.9
do queries