3v4l.org

run code in 300+ PHP versions simultaneously
<?php class HistoryBlob {} class ConcatenatedGzipHistoryBlob extends HistoryBlob { var $mVersion = 0, $mCompressed = false, $mItems = array(), $mDefaultHash = ''; } $blob = new ConcatenatedGzipHistoryBlob(); $blob->mItems[] = 'foo'; print serialize($blob);

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)
8.4.120.0110.00723.80
8.4.110.0040.00718.85
8.4.100.0140.00618.95
8.4.90.0080.00220.57
8.4.80.0040.00418.74
8.4.70.0030.00617.84
8.4.60.0040.00518.86
8.4.50.0050.00318.64
8.4.40.0080.01217.59
8.4.30.0040.01419.03
8.4.20.0100.01019.54
8.4.10.0030.00619.44
8.3.250.0090.00818.79
8.3.240.0100.00516.98
8.3.230.0100.00616.60
8.3.220.0060.00118.96
8.3.210.0070.01118.10
8.3.200.0050.00416.79
8.3.190.0120.00617.28
8.3.180.0120.00617.20
8.3.170.0060.00319.04
8.3.160.0090.00016.39
8.3.150.0120.00617.07
8.3.140.0110.00720.59
8.3.130.0060.00318.50
8.3.120.0120.00320.89
8.3.110.0080.00020.94
8.3.100.0060.00316.62
8.3.90.0000.00716.24
8.3.80.0280.00630.84
8.3.70.0210.00930.84
8.3.60.0280.00030.84
8.3.50.0100.00930.84
8.3.40.0200.00230.84
8.3.30.0220.00230.84
8.3.20.0180.00830.84
8.3.10.0220.00530.84
8.3.00.0220.00330.84
8.2.290.0120.00620.50
8.2.280.0060.00218.30
8.2.270.0030.01016.97
8.2.260.0150.00318.31
8.2.250.0040.00416.49
8.2.240.0110.01117.37
8.2.230.0060.00322.58
8.2.220.0030.01224.06
8.2.210.0040.00426.77
8.2.200.0170.00730.84
8.2.190.0180.00630.84
8.2.180.0150.00930.84
8.2.170.0190.00730.84
8.2.160.0240.00530.84
8.2.150.0220.00730.84
8.2.140.0210.01030.84
8.2.130.0240.00630.84
8.2.120.0270.00630.84
8.2.110.0210.00530.84
8.2.100.0180.00530.84
8.2.90.0150.01030.84
8.2.80.0280.00830.84
8.2.70.0340.00430.84
8.2.60.0230.00430.84
8.2.50.0210.00630.84
8.2.40.0250.00430.84
8.2.30.0220.00530.84
8.2.20.0230.00830.84
8.2.10.0210.01130.84
8.2.00.0270.00430.84
8.1.330.0090.00921.89
8.1.320.0100.01018.59
8.1.310.0140.00416.76
8.1.300.0000.00918.02
8.1.290.0260.00930.84
8.1.280.0210.01130.84
8.1.270.0280.00830.84
8.1.260.0230.00730.84
8.1.250.0230.00530.84
8.1.240.0140.00830.84
8.1.230.0200.00430.84
8.1.220.0170.00430.84
8.1.210.0180.00530.84
8.1.200.0170.00730.84
8.1.190.0180.00530.84
8.1.180.0210.00430.84
8.1.170.0190.00530.84
8.1.160.0200.00830.84
8.1.150.0170.01030.84
8.1.140.0250.00730.84
8.1.130.0250.00330.84
8.1.120.0190.00730.84
8.1.110.0220.00830.84
8.1.100.0210.01030.84
8.1.90.0210.00630.84
8.1.80.0200.00130.84
8.1.70.0170.00430.84
8.1.60.0150.00830.84
8.1.50.0230.00130.84
8.1.40.0150.00830.84
8.1.30.0170.00730.84
8.1.20.0210.00630.84
8.1.10.0370.00230.84
8.1.00.0250.00530.84
8.0.300.0210.00030.84
8.0.290.0210.00230.84
8.0.280.0190.00430.84
8.0.270.0230.00330.84
8.0.260.0180.00330.84
8.0.250.0180.00330.84
8.0.240.0160.00630.84
8.0.230.0270.00330.84
8.0.220.0310.00630.84
8.0.210.0290.00630.84
8.0.200.0270.00730.84
8.0.190.0250.01030.84
8.0.180.0210.01230.84
8.0.170.0200.01230.84
8.0.160.0230.00530.84
8.0.150.0210.00630.84
8.0.140.0200.00630.84
8.0.130.0240.00130.84
8.0.120.0220.00530.84
8.0.110.0260.00230.84
8.0.100.0250.00330.84
8.0.90.0230.00330.84
8.0.80.0210.00430.84
8.0.70.0180.00530.84
8.0.60.0220.00330.84
8.0.50.0170.01030.84
8.0.30.0220.00930.84
8.0.20.0220.00930.84
8.0.10.0290.00430.84
8.0.00.0260.00530.84
7.4.330.0290.00130.84
7.4.320.0280.00230.84
7.4.300.0260.00630.84
7.4.290.0200.00730.84
7.4.280.0190.00830.84
7.4.270.0240.00230.84
7.4.260.0180.00830.84
7.4.250.0230.00430.84
7.4.240.0200.00530.84
7.4.230.0210.00530.84
7.4.220.0230.00130.84
7.4.210.0200.00130.84
7.4.200.0210.00230.84
7.4.190.0200.00630.84
7.4.180.0200.00330.84
7.4.160.0180.00330.84
7.4.150.0220.00230.84
7.4.140.0230.00430.84
7.4.130.0200.00530.84
7.4.120.0150.00730.84
7.4.110.0180.00730.84
7.4.100.0190.00530.84
7.4.90.0160.00730.84
7.4.80.0200.00630.84
7.4.70.0260.00530.84
7.4.60.0200.01230.84
7.4.50.0190.00330.84
7.4.40.0210.00630.84
7.4.30.0210.00530.84
7.4.20.0190.00330.84
7.4.10.0180.00630.84
7.4.00.0190.00430.84
7.3.330.0210.00830.84
7.3.320.0240.00230.84
7.3.310.0160.00630.84
7.3.300.0180.00430.84
7.3.290.0140.00430.84
7.3.280.0210.00630.84
7.3.270.0180.00330.84
7.3.260.0130.00830.84
7.3.250.0190.00330.84
7.3.240.0140.00530.84
7.3.230.0140.00630.84
7.3.220.0210.00130.84
7.3.210.0140.00730.84
7.3.200.0130.00830.84
7.3.190.0180.00230.84
7.3.180.0200.00230.84
7.3.170.0140.00630.84
7.3.160.0160.00530.84
7.3.150.0190.00330.84
7.3.140.0220.00030.84
7.3.130.0210.00430.84
7.3.120.0170.00530.84
7.3.110.0130.00730.84
7.3.100.0170.00430.84
7.3.90.0190.00030.84
7.3.80.0160.00530.84
7.3.70.0180.00330.84
7.3.60.0170.00530.84
7.3.50.0200.00530.84
7.3.40.0180.00230.84
7.3.30.0150.00430.84
7.3.20.0160.00630.84
7.3.10.0170.00330.84
7.3.00.0180.00430.84
7.2.340.0170.00130.84
7.2.330.0190.00430.84
7.2.320.0150.00630.84
7.2.310.0160.00430.84
7.2.300.0150.00530.84
7.2.290.0120.00830.84
7.2.280.0180.00330.84
7.2.270.0200.00030.84
7.2.260.0170.00530.84
7.2.250.0130.01030.84
7.2.240.0100.01030.84
7.2.230.0210.00030.84
7.2.220.0190.00330.84
7.2.210.0190.00430.84
7.2.200.0200.00230.84
7.2.190.0140.00730.84
7.2.180.0190.00230.84
7.2.170.0170.00530.84
7.2.160.0150.00730.84
7.2.150.0180.00530.84
7.2.140.0170.00630.84
7.2.130.0180.00330.84
7.2.120.0110.00930.84
7.2.110.0230.00030.84
7.2.100.0170.00530.84
7.2.90.0180.00230.84
7.2.80.0160.00530.84
7.2.70.0190.00430.84
7.2.60.0170.00530.84
7.2.50.0210.00130.84
7.2.40.0170.00330.84
7.2.30.0210.00230.84
7.2.20.0180.00530.84
7.2.10.0190.00230.84
7.2.00.0190.00330.84
7.1.330.0190.00030.84
7.1.320.0170.00330.84
7.1.310.0140.00630.84
7.1.300.0140.00530.84
7.1.290.0170.00430.84
7.1.280.0140.00430.84
7.1.270.0200.00230.84
7.1.260.0150.00630.84
7.1.250.0130.00830.84
7.1.240.0130.00630.84
7.1.230.0090.01030.84
7.1.220.0200.00330.84
7.1.210.0220.00030.84
7.1.200.0190.00330.84
7.1.190.0160.00430.84
7.1.180.0140.00630.84
7.1.170.0110.00930.84
7.1.160.0130.00630.84
7.1.150.0120.00630.84
7.1.140.0180.00330.84
7.1.130.0180.00230.84
7.1.120.0140.00430.84
7.1.110.0170.00330.84
7.1.100.0120.00730.84
7.1.90.0150.00530.84
7.1.80.0170.00230.84
7.1.70.0180.00230.84
7.1.60.0150.00430.84
7.1.50.0150.00430.84
7.1.40.0190.00030.84
7.1.30.0160.00430.84
7.1.20.0170.00430.84
7.1.10.0090.01030.84
7.1.00.0160.00630.84
7.0.330.0140.00430.84
7.0.320.0170.00230.84
7.0.310.0140.00630.84
7.0.300.0160.00730.84
7.0.290.0200.00230.84
7.0.280.0170.00330.84
7.0.270.0140.00730.84
7.0.260.0170.00330.84
7.0.250.0120.00730.84
7.0.240.0100.00930.84
7.0.230.0140.00430.84
7.0.220.0110.00930.84
7.0.210.0150.00330.84
7.0.200.0150.00430.84
7.0.190.0130.00530.84
7.0.180.0170.00230.84
7.0.170.0160.00330.84
7.0.160.0160.00330.84
7.0.150.0150.00330.84
7.0.140.0090.00830.84
7.0.130.0180.00330.84
7.0.120.0150.00330.84
7.0.110.0150.00230.84
7.0.100.0120.00730.84
7.0.90.0160.00130.84
7.0.80.0150.00330.84
7.0.70.0170.00430.84
7.0.60.0100.00930.84
7.0.50.0080.00930.84
7.0.40.0130.00430.84
7.0.30.0140.00430.84
7.0.20.0160.00230.84
7.0.10.0160.00430.84
7.0.00.0200.00030.84
5.6.400.0080.01130.84
5.6.390.0180.00130.84
5.6.380.0150.00530.84
5.6.370.0130.00930.84
5.6.360.0160.00330.84
5.6.350.0160.00230.84
5.6.340.0110.00730.84
5.6.330.0150.00330.84
5.6.320.0150.00230.84
5.6.310.0130.00330.84
5.6.300.0130.00430.84
5.6.290.0130.00330.84
5.6.280.0110.00630.84
5.6.270.0180.00330.84
5.6.260.0140.00530.84
5.6.250.0130.00630.84
5.6.240.0150.00330.84
5.6.230.0140.00330.84
5.6.220.0120.00630.84
5.6.210.0150.00330.84
5.6.200.0120.00530.84
5.6.190.0170.00330.84
5.6.180.0150.00530.84
5.6.170.0140.00430.84
5.6.160.0110.00630.84
5.6.150.0070.00930.84
5.6.140.0180.00030.84
5.6.130.0150.00230.84
5.6.120.0120.00630.84
5.6.110.0230.00030.84
5.6.100.0140.00530.84
5.6.90.0200.00030.84
5.6.80.0130.00430.84
5.6.70.0130.00530.84
5.6.60.0130.00330.84
5.6.50.0110.00630.84
5.6.40.0130.00530.84
5.6.30.0140.00330.84
5.6.20.0150.00330.84
5.6.10.0170.00230.84
5.6.00.0190.00230.84
5.5.380.0150.00430.84
5.5.370.0150.00230.84
5.5.360.0110.00630.84
5.5.350.0120.00430.84
5.5.340.0080.00830.84
5.5.330.0130.00430.84
5.5.320.0180.00230.84
5.5.310.0130.00530.84
5.5.300.0160.00130.84
5.5.290.0150.00530.84
5.5.280.0170.00630.84
5.5.270.0180.00830.84
5.5.260.0180.00530.84
5.5.250.0170.00530.84
5.5.240.0210.00430.84
5.5.230.0240.00030.84
5.5.220.0190.00430.84
5.5.210.0180.00630.84
5.5.200.0130.01030.84
5.5.190.0180.00630.84
5.5.180.0210.00330.84
5.5.170.0150.00430.84
5.5.160.0120.01030.84
5.5.150.0150.00530.84
5.5.140.0130.00830.84
5.5.130.0250.00030.84
5.5.120.0190.00430.84
5.5.110.0210.00430.84
5.5.100.0160.00730.84
5.5.90.0190.00530.84
5.5.80.0200.00630.84
5.5.70.0170.00730.84
5.5.60.0260.00230.84
5.5.50.0180.00430.84
5.5.40.0140.00630.84
5.5.30.0120.00530.84
5.5.20.0140.00430.84
5.5.10.0130.00430.84
5.5.00.0140.00330.84
5.4.450.0120.00330.84
5.4.440.0130.00230.84
5.4.430.0150.00030.84
5.4.420.0100.00530.84
5.4.410.0120.00230.84
5.4.400.0110.00330.84
5.4.390.0080.00630.84
5.4.380.0140.00030.84
5.4.370.0120.00130.84
5.4.360.0060.00830.84
5.4.350.0130.00030.84
5.4.340.0120.00030.84
5.4.330.0100.00230.84
5.4.320.0130.00030.84
5.4.310.0110.00430.84
5.4.300.0100.00330.84
5.4.290.0150.00030.84
5.4.280.0110.00230.84
5.4.270.0110.00230.84
5.4.260.0110.00330.84
5.4.250.0100.00430.84
5.4.240.0120.00330.84
5.4.230.0130.00030.84
5.4.220.0120.00330.84
5.4.210.0100.00730.84
5.4.200.0090.00530.84
5.4.190.0100.00330.84
5.4.180.0090.00430.84
5.4.170.0080.00630.84
5.4.160.0140.00030.84
5.4.150.0110.00330.84
5.4.140.0080.00530.84
5.4.130.0110.00130.84
5.4.120.0110.00230.84
5.4.110.0100.00330.84
5.4.100.0080.00530.84
5.4.90.0090.00530.84
5.4.80.0130.00030.84
5.4.70.0150.00230.84
5.4.60.0110.00130.84
5.4.50.0120.00230.84
5.4.40.0110.00230.84
5.4.30.0080.00530.84
5.4.20.0090.00430.84
5.4.10.0120.00330.84
5.4.00.0070.00530.84
5.3.290.0110.00330.84
5.3.280.0130.00230.84
5.3.270.0090.00530.84
5.3.260.0080.00530.84
5.3.250.0090.00330.84
5.3.240.0090.00630.84
5.3.230.0100.00430.84
5.3.220.0090.00630.84
5.3.210.0070.00630.84
5.3.200.0050.00830.84
5.3.190.0090.00330.84
5.3.180.0110.00230.84
5.3.170.0100.00330.84
5.3.160.0130.00030.84
5.3.150.0100.00230.84
5.3.140.0080.00530.84
5.3.130.0090.00330.84
5.3.120.0100.00430.84
5.3.110.0100.00330.84
5.3.100.0080.00730.84
5.3.90.0110.00330.84
5.3.80.0130.00230.84
5.3.70.0040.00930.84
5.3.60.0100.00530.84
5.3.50.0110.00330.84
5.3.40.0110.00230.84
5.3.30.0070.00530.84
5.3.20.0130.00030.84
5.3.10.0100.00130.84
5.3.00.0090.00330.84
5.2.170.0080.00330.84
5.2.160.0090.00230.84
5.2.150.0080.00330.84
5.2.140.0080.00230.84
5.2.130.0090.00130.84
5.2.120.0090.00130.84
5.2.110.0100.00030.84
5.2.100.0100.00030.84
5.2.90.0060.00430.84
5.2.80.0000.01030.84
5.2.70.0070.00330.84
5.2.60.0080.00230.84
5.2.50.0070.00330.84
5.2.40.0070.00530.84
5.2.30.0070.00430.84
5.2.20.0080.00230.84
5.2.10.0020.00730.84
5.2.00.0090.00030.84
5.1.60.0070.00130.84
5.1.50.0090.00030.84
5.1.40.0090.00030.84
5.1.30.0050.00530.84
5.1.20.0070.00230.84
5.1.10.0050.00430.84
5.1.00.0050.00430.84
5.0.50.0080.00130.84
5.0.40.0050.00230.84
5.0.30.0080.00030.84
5.0.20.0070.00030.84
5.0.10.0060.00130.84
5.0.00.0060.00130.84
4.4.90.0020.00230.84
4.4.80.0020.00230.84
4.4.70.0040.00030.84
4.4.60.0040.00130.84
4.4.50.0010.00330.84
4.4.40.0040.00030.84
4.4.30.0020.00230.84
4.4.20.0020.00230.84
4.4.10.0050.00030.84
4.4.00.0010.00330.84
4.3.110.0040.00030.84
4.3.100.0050.00030.84
4.3.90.0020.00230.84
4.3.80.0040.00030.84
4.3.70.0020.00230.84
4.3.60.0050.00030.84
4.3.50.0040.00030.84
4.3.40.0030.00230.84
4.3.30.0040.00030.84
4.3.20.0040.00030.84
4.3.10.0030.00030.84
4.3.00.0040.00030.84

preferences:
30.52 ms | 403 KiB | 5 Q