3v4l.org

run code in 300+ PHP versions simultaneously
<?php $b = ""; for ($x = 0; $x < 256; ++$x) $b .= chr($x); $a = [ $b ]; var_dump(serialize($a)); var_dump(unserialize(serialize($a)));

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.5.30.0080.01019.34
8.5.20.0120.00619.59
8.5.10.0090.00918.31
8.5.00.0150.00620.04
8.4.180.0090.01220.61
8.4.170.0100.01123.72
8.4.160.0130.01023.86
8.4.150.0070.00616.89
8.4.140.0120.01017.60
8.4.130.0140.00717.50
8.4.120.0110.00820.51
8.4.110.0140.00722.39
8.4.100.0090.00517.52
8.4.90.0130.00318.55
8.4.80.0060.00217.56
8.4.70.0060.00517.57
8.4.60.0100.01018.79
8.4.50.0090.01019.48
8.4.40.0130.00719.36
8.4.30.0130.00618.31
8.4.20.0120.00920.93
8.4.10.0040.00419.46
8.3.300.0100.01119.22
8.3.290.0100.01220.82
8.3.280.0140.00718.13
8.3.270.0120.01116.34
8.3.260.0090.01016.47
8.3.250.0100.00818.71
8.3.240.0060.00216.43
8.3.230.0100.00916.48
8.3.220.0060.00317.04
8.3.210.0110.00816.38
8.3.200.0050.00416.64
8.3.190.0130.00516.99
8.3.180.0120.00616.63
8.3.170.0070.01117.00
8.3.160.0130.00718.40
8.3.150.0140.00420.62
8.3.140.0120.00318.22
8.3.130.0080.00016.69
8.3.120.0050.00220.59
8.3.110.0120.00320.94
8.3.100.0040.00724.06
8.3.90.0040.00426.77
8.3.80.0030.01016.75
8.3.70.0140.00016.58
8.3.60.0120.00318.07
8.3.50.0100.00817.39
8.3.40.0110.00718.84
8.3.30.0090.00618.67
8.3.20.0000.00721.81
8.3.10.0050.00221.90
8.3.00.0000.00723.61
8.2.300.0120.00722.10
8.2.290.0100.00920.21
8.2.280.0050.00318.19
8.2.270.0110.00718.97
8.2.260.0040.00418.54
8.2.250.0040.00416.62
8.2.240.0040.00419.05
8.2.230.0060.00322.58
8.2.220.0050.00337.54
8.2.210.0130.00726.77
8.2.200.0030.00616.38
8.2.190.0120.00616.58
8.2.180.0040.01125.92
8.2.170.0090.00922.96
8.2.160.0090.00620.57
8.2.150.0030.00624.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0070.00026.16
8.2.110.0110.00021.01
8.2.100.0090.00317.84
8.2.90.0030.00519.13
8.2.80.0040.00417.97
8.2.70.0040.00417.63
8.2.60.0050.00317.93
8.2.50.0040.00418.07
8.2.40.0050.00319.88
8.2.30.0030.00618.11
8.2.20.0000.00718.18
8.2.10.0000.00818.95
8.2.00.0050.00219.20
8.1.340.0160.00717.45
8.1.330.0120.00722.11
8.1.320.0100.01015.93
8.1.310.0070.01118.60
8.1.300.0070.00718.36
8.1.290.0100.00030.84
8.1.280.0120.00925.92
8.1.270.0030.00620.64
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0070.00422.72
8.1.230.0090.00317.95
8.1.220.0040.00417.76
8.1.210.0080.00018.77
8.1.200.0060.00317.23
8.1.190.0000.00917.35
8.1.180.0060.00318.10
8.1.170.0070.00018.64
8.1.160.0040.00418.80
8.1.150.0030.00519.01
8.1.140.0050.00318.88
8.1.130.0000.00720.13
8.1.120.0000.00717.44
8.1.110.0000.00817.44
8.1.100.0060.00317.48
8.1.90.0000.00717.48
8.1.80.0080.00017.35
8.1.70.0040.00417.44
8.1.60.0000.00817.64
8.1.50.0000.00817.57
8.1.40.0000.00917.52
8.1.30.0000.00817.67
8.1.20.0040.00417.64
8.1.10.0050.00217.51
8.1.00.0050.00217.30
8.0.300.0030.00618.77
8.0.290.0070.00016.75
8.0.280.0030.00618.45
8.0.270.0000.00817.17
8.0.260.0030.00318.30
8.0.250.0000.00717.03
8.0.240.0070.00017.01
8.0.230.0030.00317.00
8.0.220.0000.00716.98
8.0.210.0000.00716.97
8.0.200.0030.00316.92
8.0.190.0070.00016.91
8.0.180.0030.00316.94
8.0.170.0000.00916.95
8.0.160.0000.00816.99
8.0.150.0040.00416.88
8.0.140.0040.00416.80
8.0.130.0080.00013.44
8.0.120.0040.00416.81
8.0.110.0040.00416.87
8.0.100.0000.00716.84
8.0.90.0090.00016.91
8.0.80.0060.00916.90
8.0.70.0050.00316.78
8.0.60.0000.00716.85
8.0.50.0040.00417.07
8.0.30.0160.00317.22
8.0.20.0140.00517.16
8.0.10.0000.00716.90
8.0.00.0100.00816.92
7.4.330.0050.00015.55
7.4.320.0030.00316.46
7.4.300.0060.00316.36
7.4.290.0040.00416.52
7.4.280.0040.00416.54
7.4.270.0100.00016.58
7.4.260.0000.00716.39
7.4.250.0070.00016.52
7.4.240.0020.00516.52
7.4.230.0030.00316.69
7.4.220.0070.00016.67
7.4.210.0070.00716.61
7.4.200.0000.00716.63
7.4.160.0120.00816.46
7.4.140.0100.00717.86
7.4.130.0100.00716.43
7.4.120.0110.00516.42
7.4.110.0100.00716.51
7.4.100.0030.01416.41
7.4.90.0080.01116.55
7.4.80.0070.01019.39
7.4.70.0110.00616.50
7.4.60.0050.01116.53
7.4.50.0030.01016.54
7.4.40.0090.01316.47
7.4.00.0050.00514.71
7.3.330.0020.00213.27
7.3.320.0000.00613.11
7.3.310.0000.00716.12
7.3.300.0030.00316.32
7.3.290.0030.00316.28
7.3.280.0120.00716.26
7.3.260.0120.00816.45
7.3.240.0090.01016.43
7.3.230.0110.00616.54
7.3.210.0000.01616.39
7.3.200.0150.00616.38
7.3.190.0130.00916.48
7.3.180.0090.00616.46
7.3.170.0140.00316.45
7.3.160.0110.00716.45
7.3.60.0030.01014.92
7.3.50.0060.00514.96
7.3.40.0170.00714.68
7.3.30.0100.01014.77
7.3.20.0120.00414.72
7.3.10.0120.00614.75
7.3.00.0070.00715.03
7.2.330.0080.01216.31
7.2.320.0160.00716.73
7.2.310.0100.01016.55
7.2.300.0140.00916.80
7.2.290.0100.01016.36
7.2.190.0110.00415.11
7.2.180.0180.00615.04
7.2.170.0030.01214.73
7.2.160.0090.00614.94
7.2.150.0070.00714.90
7.2.140.0060.00915.17
7.2.130.0100.00715.10
7.2.120.0090.00615.00
7.2.110.0080.00814.89
7.2.100.0100.00615.02
7.2.90.0090.00614.94
7.2.80.0160.00015.14
7.2.70.0110.00514.99
7.2.60.0160.00515.15
7.2.50.0050.01314.96
7.2.40.0220.00315.01
7.2.30.0040.01215.18
7.2.20.0060.01014.90
7.2.10.0030.01314.93
7.2.00.0060.01015.13
7.1.300.0070.01113.91
7.1.290.0110.00614.04
7.1.280.0140.00313.89
7.1.270.0080.00513.88
7.1.260.0070.01114.13
7.1.250.0060.00913.75

preferences:
84.77 ms | 1559 KiB | 5 Q