3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = array('hello'); $x[] = & $x; $y = unserialize(serialize($x)); $y[0] = 'world'; $x[0] = 'world'; var_dump($x); var_dump($y);

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)
8.3.40.0140.00718.75
8.3.30.0070.01018.67
8.3.20.0080.00018.62
8.3.10.0030.01220.92
8.3.00.0000.00823.52
8.2.170.0110.00422.96
8.2.160.0100.00320.53
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0050.00319.66
8.2.110.0030.00622.26
8.2.100.0030.00917.91
8.2.90.0090.00019.21
8.2.80.0040.00419.39
8.2.70.0090.00017.63
8.2.60.0000.00817.93
8.2.50.0030.00618.07
8.2.40.0090.00018.28
8.2.30.0080.00319.50
8.2.20.0030.00617.61
8.2.10.0040.00417.79
8.2.00.0020.00917.56
8.1.270.0080.00023.99
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0090.00023.96
8.1.230.0040.00719.01
8.1.220.0000.00917.74
8.1.210.0030.00518.77
8.1.200.0100.00017.23
8.1.190.0040.00417.40
8.1.180.0040.00419.01
8.1.170.0080.00018.52
8.1.160.0030.00518.68
8.1.150.0000.00818.45
8.1.140.0040.00417.34
8.1.130.0030.00517.82
8.1.120.0030.00717.40
8.1.110.0070.00017.39
8.1.100.0000.00817.28
8.1.90.0040.00417.25
8.1.80.0040.00417.38
8.1.70.0000.00717.41
8.1.60.0000.00817.55
8.1.50.0040.00417.39
8.1.40.0000.00817.39
8.1.30.0000.00817.44
8.1.20.0030.00517.55
8.1.10.0040.00417.41
8.1.00.0040.00417.41
8.0.300.0030.00518.77
8.0.290.0040.00417.05
8.0.280.0040.00418.39
8.0.270.0000.00717.20
8.0.260.0030.00316.72
8.0.250.0000.00716.92
8.0.240.0000.00816.98
8.0.230.0000.00716.95
8.0.220.0070.00016.74
8.0.210.0030.00316.84
8.0.200.0050.00216.95
8.0.190.0070.00016.86
8.0.180.0040.00416.89
8.0.170.0040.00416.93
8.0.160.0050.00316.83
8.0.150.0050.00316.73
8.0.140.0060.00616.75
8.0.130.0060.00013.23
8.0.120.0000.00816.80
8.0.110.0040.00416.94
8.0.100.0040.00416.71
8.0.90.0030.00416.78
8.0.80.0070.00716.86
8.0.70.0050.00316.68
8.0.60.0000.00816.76
8.0.50.0030.00516.76
8.0.30.0100.01116.99
8.0.20.0140.00817.40
8.0.10.0000.00716.86
8.0.00.0070.01116.68
7.4.330.0060.00014.66
7.4.320.0000.00716.50
7.4.300.0030.00316.48
7.4.290.0030.00316.57
7.4.280.0040.00416.46
7.4.270.0030.00316.43
7.4.260.0000.00613.14
7.4.250.0080.00016.49
7.4.240.0030.00316.58
7.4.230.0070.00016.57
7.4.220.0030.01516.55
7.4.210.0070.00816.56
7.4.200.0000.00716.52
7.4.190.0000.00816.32
7.4.160.0070.01316.50
7.4.150.0180.00017.40
7.4.140.0120.00517.86
7.4.130.0100.00716.58
7.4.120.0180.00316.41
7.4.110.0060.01216.65
7.4.100.0150.00616.53
7.4.90.0030.01316.26
7.4.80.0130.00319.39
7.4.70.0060.01816.42
7.4.60.0160.00016.43
7.4.50.0000.00816.29
7.4.40.0060.00922.52
7.4.30.0060.01316.43
7.4.00.0080.00614.61
7.3.330.0050.00012.96
7.3.320.0000.00513.05
7.3.310.0030.00316.15
7.3.300.0000.00716.12
7.3.290.0080.00616.20
7.3.280.0110.00616.23
7.3.270.0060.01217.40
7.3.260.0090.01118.24
7.3.250.0100.00816.43
7.3.240.0040.01216.25
7.3.230.0110.00616.39
7.3.210.0130.00616.43
7.3.200.0110.01019.39
7.3.190.0060.01616.23
7.3.180.0040.01116.21
7.3.170.0180.00016.34
7.3.160.0090.00616.32
7.3.120.0090.00615.04
7.2.330.0110.00716.47
7.2.320.0100.01016.70
7.2.310.0090.00916.53
7.2.300.0060.01016.64
7.2.290.0110.00716.63
7.2.00.0070.00419.17
7.1.100.0030.00718.20
7.1.70.0000.00717.13
7.1.60.0060.01819.40
7.1.50.0130.01017.03
7.1.00.0030.04322.45
7.0.200.0070.00316.71
7.0.140.0030.07322.12
7.0.70.0070.07321.73
7.0.60.0070.07321.59
7.0.50.0070.09022.16
7.0.40.0130.07020.04
7.0.30.0070.04020.08
7.0.20.0070.08319.95
7.0.10.0070.08320.13
7.0.00.0070.08320.03
5.6.280.0070.07021.08
5.6.220.0030.05720.72
5.6.210.0030.08020.73
5.6.200.0030.08320.94
5.6.190.0070.08321.02
5.6.180.0030.08320.96
5.6.170.0030.08321.16
5.6.160.0070.08320.94
5.6.150.0030.06720.99
5.6.140.0100.06721.08
5.6.130.0130.08020.94
5.6.120.0000.05721.04
5.6.110.0130.07320.92
5.6.100.0100.07321.04
5.6.90.0030.06021.08
5.6.80.0100.06720.49
5.6.70.0100.07320.41
5.6.60.0000.06720.47
5.6.50.0030.07720.40
5.6.40.0030.08320.34
5.6.30.0100.04320.38
5.6.20.0000.07020.43
5.6.10.0000.07020.39
5.6.00.0030.08320.42
5.5.360.0030.06720.37
5.5.350.0030.05320.41
5.5.340.0030.08020.70
5.5.330.0030.08720.87
5.5.320.0100.07320.89
5.5.310.0070.08320.59
5.5.300.0030.08020.79
5.5.290.0100.08020.79
5.5.280.0070.05720.59
5.5.270.0000.06020.85
5.5.260.0000.07020.86
5.5.250.0070.08020.71
5.5.240.0000.08320.29
5.5.230.0000.08320.15
5.5.220.0100.07020.23
5.5.210.0070.07320.18
5.5.200.0030.08320.10
5.5.190.0000.06720.25
5.5.180.0000.06720.23
5.5.160.0000.07020.26
5.5.150.0070.06320.07
5.5.140.0030.08320.21
5.5.130.0030.05320.27
5.5.120.0030.07320.06
5.5.110.0100.07320.13
5.5.100.0100.07720.11
5.5.90.0070.07720.12
5.5.80.0070.07320.05
5.5.70.0070.07720.15
5.5.60.0000.08320.13
5.5.50.0030.08019.97
5.5.40.0100.07720.14
5.5.30.0030.07720.06
5.5.20.0030.07320.04
5.5.10.0030.08019.97
5.5.00.0000.06720.08
5.4.450.0000.06019.46
5.4.440.0000.06019.36
5.4.430.0030.09019.29
5.4.420.0030.08019.39
5.4.410.0130.07019.29
5.4.400.0030.05718.97
5.4.390.0100.04318.95
5.4.380.0130.07019.07
5.4.370.0070.07318.91
5.4.360.0000.08319.05
5.4.350.0100.06319.10
5.4.340.0070.03719.07
5.4.320.0030.07719.08
5.4.310.0030.07719.16
5.4.300.0130.06019.12
5.4.290.0030.06318.78
5.4.280.0030.07719.02
5.4.270.0070.07318.97
5.4.260.0030.07719.04
5.4.250.0000.08019.24
5.4.240.0070.06319.02
5.4.230.0000.07319.11
5.4.220.0030.05719.02
5.4.210.0030.07318.91
5.4.200.0030.08019.11
5.4.190.0100.06719.22
5.4.180.0070.08018.77
5.4.170.0070.05719.06
5.4.160.0000.08318.96
5.4.150.0030.08019.07
5.4.140.0030.06716.36
5.4.130.0000.04716.25
5.4.120.0030.07716.32
5.4.110.0070.07316.22
5.4.100.0000.06716.20
5.4.90.0000.05016.33
5.4.80.0030.07016.19
5.4.70.0000.06316.39
5.4.60.0070.07016.42
5.4.50.0000.08016.19
5.4.40.0030.07316.35
5.4.30.0000.07016.23
5.4.20.0030.05016.37
5.4.10.0070.05016.27
5.4.00.0030.04715.77
5.3.290.0070.07714.66
5.3.280.0100.07014.57
5.3.270.0030.06314.62
5.3.260.0000.07014.60
5.3.250.0070.06014.46
5.3.240.0100.04714.42
5.3.230.0070.03714.45
5.3.220.0070.06014.55
5.3.210.0000.06014.57
5.3.200.0000.07714.41
5.3.190.0030.06714.55
5.3.180.0030.06014.55
5.3.170.0030.07714.43
5.3.160.0070.06714.43
5.3.150.0070.07014.50
5.3.140.0000.08314.48
5.3.130.0100.07014.53
5.3.120.0030.05714.52
5.3.110.0100.07714.41
5.3.100.0000.07013.98
5.3.90.0000.04013.87
5.3.80.0000.03714.01
5.3.70.0000.07313.92
5.3.60.0030.06713.96
5.3.50.0030.07313.80
5.3.40.0030.05713.87
5.3.30.0000.07313.88
5.3.20.0030.04713.65
5.3.10.0030.06013.52
5.3.00.0000.08013.49
5.2.170.0030.04312.18
5.2.160.0030.06312.18
5.2.150.0070.05712.18
5.2.140.0000.06712.18
5.2.130.0030.06012.18
5.2.120.0070.05312.18
5.2.110.0100.05712.18
5.2.100.0100.05012.18
5.2.90.0000.03712.18
5.2.80.0070.02712.18
5.2.70.0000.05012.18
5.2.60.0070.05712.18
5.2.50.0070.05712.18
5.2.40.0000.04712.18
5.2.30.0000.05712.18
5.2.20.0070.06012.18
5.2.10.0000.06012.18
5.2.00.0030.04312.18
5.1.60.0030.04312.18
5.1.50.0070.05312.18
5.1.40.0070.05012.18
5.1.30.0000.04312.18
5.1.20.0000.05312.18
5.1.10.0030.04012.18
5.1.00.0030.04012.18
5.0.50.0000.03712.18
5.0.40.0000.04012.18
5.0.30.0000.04712.18
5.0.20.0000.03312.18
5.0.10.0000.04312.18
5.0.00.0070.05012.18
4.4.90.0030.02012.18
4.4.80.0000.02712.18
4.4.70.0000.02012.18
4.4.60.0000.03712.18
4.4.50.0030.03312.18
4.4.40.0030.05012.18
4.4.30.0030.03312.18
4.4.20.0030.03312.18
4.4.10.0000.03312.18
4.4.00.0030.04712.18
4.3.110.0000.03712.18
4.3.100.0000.03012.18
4.3.90.0030.02712.18
4.3.80.0000.05712.18
4.3.70.0000.03712.18
4.3.60.0030.02312.18
4.3.50.0000.03012.18
4.3.40.0100.03712.18
4.3.30.0030.03312.18
4.3.20.0000.02712.18
4.3.10.0000.03712.18
4.3.00.0070.03012.18

preferences:
41.98 ms | 400 KiB | 5 Q