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<?php function ref(&$array) { foreach ($array as $item) { $tem; } } $start = microtime(true); $array = range(0, 1000); ref($array); echo 'time: '.(microtime(true) - $start).' сек.';
Output for 7.2.6
time: 2.8848648071289E-5 сек.
Output for 7.0.6, 7.2.0
time: 3.8862228393555E-5 сек.
Output for 7.1.10
time: 2.6941299438477E-5 сек.
Output for 7.0.2, 7.0.5, 7.0.9, 7.0.20, 7.1.7
time: 4.1007995605469E-5 сек.
Output for 7.1.6
time: 0.0013718605041504 сек.
Output for 7.0.17, 7.1.3, 7.1.5
time: 4.1961669921875E-5 сек.
Output for 7.1.4
time: 0.00013518333435059 сек.
Output for 7.1.2
time: 3.6954879760742E-5 сек.
Output for 7.1.1
time: 3.4093856811523E-5 сек.
Output for 7.1.0
time: 4.4822692871094E-5 сек.
Output for 7.0.19
time: 4.7922134399414E-5 сек.
Output for 7.0.18
time: 4.6014785766602E-5 сек.
Output for 7.0.7, 7.0.16
time: 3.0994415283203E-5 сек.
Output for 7.0.15
time: 3.7908554077148E-5 сек.
Output for 7.0.4, 7.0.11, 7.0.14
time: 4.0054321289062E-5 сек.
Output for 7.0.13
time: 4.2200088500977E-5 сек.
Output for 7.0.12
time: 5.4121017456055E-5 сек.
Output for 7.0.10
time: 3.1948089599609E-5 сек.
Output for 7.0.8
time: 3.9815902709961E-5 сек.
Output for 7.0.3
time: 3.0040740966797E-5 сек.
Output for 7.0.1
time: 3.9100646972656E-5 сек.
Output for 7.0.0
time: 3.6001205444336E-5 сек.

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