3v4l.org

run code in 300+ PHP versions simultaneously
<?php $t = microtime(true); $n = 100000; $max = 10; $m = memory_get_usage(true); echo 'Serialize' . PHP_EOL; for($i = 0; $i < $max; $i++) { $a = array(); for($i = 0; $i < $n; $i++) { $a[$i] = (int)$i; } } echo 'Peak: ' . memory_get_peak_usage(true) . PHP_EOL; echo 'Usage: ' . (memory_get_usage(true) - $m) . PHP_EOL . PHP_EOL; $content = serialize($a); $a = null; $t = microtime(true); $m = memory_get_usage(true); echo 'Unserialize' . PHP_EOL; for($i = 0; $i < $max; $i++) { $a = unserialize($content); } echo 'Peak: ' . memory_get_peak_usage(true) . PHP_EOL; echo 'Usage: ' . (memory_get_usage(true) - $m) . PHP_EOL; echo 'Time: ' . (microtime(true) - $t) . PHP_EOL;
Output for 7.2.0
Serialize Peak: 6295552 Usage: 4198400 Unserialize Peak: 15728640 Usage: 6815744 Time: 0.14959812164307
Output for 7.1.7
Serialize Peak: 6295552 Usage: 4198400 Unserialize Peak: 15728640 Usage: 4718592 Time: 0.067089796066284
Output for 7.1.6
Serialize Peak: 6295552 Usage: 4198400 Unserialize Peak: 15728640 Usage: 4718592 Time: 0.057650089263916
Output for 7.1.5
Serialize Peak: 6295552 Usage: 4198400 Unserialize Peak: 15728640 Usage: 4718592 Time: 0.075391054153442
Output for 7.1.0
Serialize Peak: 6295552 Usage: 4198400 Unserialize Peak: 15728640 Usage: 4718592 Time: 0.07439398765564
Output for 7.0.20
Serialize Peak: 6295552 Usage: 4198400 Unserialize Peak: 15728640 Usage: 4718592 Time: 0.052412986755371
Output for 7.0.7
Serialize Peak: 6295552 Usage: 4198400 Unserialize Peak: 15728640 Usage: 4718592 Time: 0.062530994415283
Output for 7.0.6
Serialize Peak: 6295552 Usage: 4198400 Unserialize Peak: 15728640 Usage: 4718592 Time: 0.060312986373901
Output for 7.0.5
Serialize Peak: 6295552 Usage: 4198400 Unserialize Peak: 15728640 Usage: 4718592 Time: 0.060838937759399
Output for 7.0.4
Serialize Peak: 6295552 Usage: 4198400 Unserialize Peak: 15728640 Usage: 4718592 Time: 0.060858011245728
Output for 7.0.3
Serialize Peak: 6295552 Usage: 4198400 Unserialize Peak: 15728640 Usage: 4718592 Time: 0.062307119369507
Output for 7.0.2
Serialize Peak: 6295552 Usage: 4198400 Unserialize Peak: 15728640 Usage: 4718592 Time: 0.059879064559937
Output for 7.0.1
Serialize Peak: 6295552 Usage: 4198400 Unserialize Peak: 15728640 Usage: 4718592 Time: 0.060481071472168
Output for 7.0.0
Serialize Peak: 6295552 Usage: 4198400 Unserialize Peak: 15728640 Usage: 4718592 Time: 0.061532020568848
Output for 5.6.28
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.3713710308075
Output for 5.6.22
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.39728784561157
Output for 5.6.21
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.39606785774231
Output for 5.6.20
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.39026403427124
Output for 5.6.19
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.39019298553467
Output for 5.6.18
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.38585996627808
Output for 5.6.17
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.39269304275513
Output for 5.6.16
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.384605884552
Output for 5.6.15
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.38589000701904
Output for 5.6.14
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.38685822486877
Output for 5.6.13
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.38432002067566
Output for 5.6.12
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33816576 Usage: 29884416 Time: 0.18985915184021
Output for 5.6.11
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33816576 Usage: 29884416 Time: 0.18753004074097
Output for 5.6.10
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33816576 Usage: 29884416 Time: 0.1934380531311
Output for 5.6.9
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33816576 Usage: 29884416 Time: 0.1913800239563
Output for 5.6.8
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33816576 Usage: 29884416 Time: 0.19313716888428
Output for 5.6.7
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33816576 Usage: 29884416 Time: 0.19276595115662
Output for 5.6.6
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.18433308601379
Output for 5.6.5
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.18520498275757
Output for 5.6.4
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.18719291687012
Output for 5.6.3
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17451214790344
Output for 5.6.2
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.18745088577271
Output for 5.6.1
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17843198776245
Output for 5.6.0
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17623805999756
Output for 5.5.36
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.38286113739014
Output for 5.5.35
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.39138293266296
Output for 5.5.34
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.39087414741516
Output for 5.5.33
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.40909886360168
Output for 5.5.32
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.39314794540405
Output for 5.5.31
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.39139795303345
Output for 5.5.30
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.39393615722656
Output for 5.5.29
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 40632320 Usage: 36700160 Time: 0.3926842212677
Output for 5.5.28
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33816576 Usage: 29884416 Time: 0.1943199634552
Output for 5.5.27
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33816576 Usage: 29884416 Time: 0.192058801651
Output for 5.5.26
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33816576 Usage: 29884416 Time: 0.1878879070282
Output for 5.5.25
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33816576 Usage: 29884416 Time: 0.19079303741455
Output for 5.5.24
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33816576 Usage: 29884416 Time: 0.19323205947876
Output for 5.5.23
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33816576 Usage: 29884416 Time: 0.19466495513916
Output for 5.5.22
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17353582382202
Output for 5.5.21
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.18518400192261
Output for 5.5.20
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17252802848816
Output for 5.5.19
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.19254517555237
Output for 5.5.18
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.18943095207214
Output for 5.5.16
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17712903022766
Output for 5.5.15
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.18317890167236
Output for 5.5.14
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17834496498108
Output for 5.5.13
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17834305763245
Output for 5.5.12
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17192006111145
Output for 5.5.11
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.1755428314209
Output for 5.5.10
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17289900779724
Output for 5.5.9
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17843294143677
Output for 5.5.8
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.18426990509033
Output for 5.5.7
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.18030309677124
Output for 5.5.6
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17481207847595
Output for 5.5.5
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17735004425049
Output for 5.5.4
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.18861103057861
Output for 5.5.3
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.1782648563385
Output for 5.5.2
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17280697822571
Output for 5.5.1
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17652201652527
Output for 5.5.0
Serialize Peak: 15204352 Usage: 14942208 Unserialize Peak: 33030144 Usage: 29097984 Time: 0.17895007133484
preferences:
88.14 ms | 401 KiB | 79 Q