3v4l.org

run code in 300+ PHP versions simultaneously
<?php $obj = new stdClass; $obj->a = &$obj->b; $obj->b = 1; var_dump($obj);

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)
8.3.60.0070.00716.38
8.3.50.0130.00722.84
8.3.40.0130.00318.85
8.3.30.0100.00319.01
8.3.20.0000.00720.29
8.3.10.0040.00421.95
8.3.00.0050.00319.13
8.2.180.0150.00618.25
8.2.170.0120.00622.96
8.2.160.0070.00720.60
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0000.00926.16
8.2.120.0080.00020.96
8.2.110.0080.00022.07
8.2.100.0040.00817.66
8.2.90.0060.00319.01
8.2.80.0050.00317.97
8.2.70.0030.00617.50
8.2.60.0040.00417.80
8.2.50.0040.00418.07
8.2.40.0040.00418.21
8.2.30.0000.00718.02
8.2.20.0000.00817.62
8.2.10.0070.00017.88
8.2.00.0000.00817.66
8.1.280.0170.00325.92
8.1.270.0100.00623.80
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0090.00023.76
8.1.230.0040.00719.03
8.1.220.0030.00617.74
8.1.210.0040.00418.77
8.1.200.0100.00017.25
8.1.190.0040.00417.40
8.1.180.0030.00518.10
8.1.170.0050.00318.66
8.1.160.0040.00421.92
8.1.150.0000.00818.74
8.1.140.0060.00317.35
8.1.130.0040.00417.73
8.1.120.0000.00717.41
8.1.110.0040.00417.40
8.1.100.0000.00717.36
8.1.90.0030.00317.43
8.1.80.0000.00717.34
8.1.70.0000.00817.32
8.1.60.0080.00017.51
8.1.50.0030.00617.43
8.1.40.0030.00617.43
8.1.30.0050.00317.54
8.1.20.0000.00717.59
8.1.10.0040.00417.45
8.1.00.0060.00317.39
8.0.300.0040.00418.77
8.0.290.0040.00416.93
8.0.280.0070.00018.39
8.0.270.0070.00017.10
8.0.260.0000.00717.05
8.0.250.0040.00416.79
8.0.240.0070.00016.75
8.0.230.0000.00716.84
8.0.220.0040.00416.72
8.0.210.0070.00016.83
8.0.200.0060.00016.77
8.0.190.0070.00016.77
8.0.180.0000.00816.73
8.0.170.0000.00716.74
8.0.160.0030.00316.93
8.0.150.0000.00716.79
8.0.140.0030.00716.74
8.0.130.0030.00313.14
8.0.120.0040.00416.70
8.0.110.0040.00416.84
8.0.100.0040.00416.82
8.0.90.0040.00416.88
8.0.80.0070.01416.87
8.0.70.0000.00716.65
8.0.60.0050.00216.86
8.0.50.0000.00716.77
8.0.30.0100.00817.08
8.0.20.0090.01217.40
8.0.10.0040.00416.92
8.0.00.0080.01416.60
7.4.330.0020.00215.00
7.4.320.0030.00316.48
7.4.300.0000.00616.38
7.4.290.0070.00016.50
7.4.280.0080.00316.43
7.4.270.0030.00316.44
7.4.260.0040.00716.46
7.4.250.0040.00416.40
7.4.240.0010.00616.46
7.4.230.0020.00516.31
7.4.220.0100.00616.57
7.4.210.0000.01416.54
7.4.200.0040.00316.53
7.4.160.0080.00816.36
7.4.150.0040.01517.40
7.4.140.0110.00917.86
7.4.130.0120.00916.27
7.4.120.0080.00816.45
7.4.110.0100.00716.48
7.4.100.0000.02116.39
7.4.90.0100.00716.41
7.4.80.0120.00919.39
7.4.70.0110.00816.36
7.4.60.0130.00316.45
7.4.50.0070.00016.27
7.4.40.0030.01316.21
7.4.30.0090.00616.40
7.4.00.0090.00614.93
7.3.330.0030.00313.13
7.3.320.0060.00013.04
7.3.310.0000.00716.16
7.3.300.0000.00816.18
7.3.290.0070.00716.16
7.3.280.0050.01216.14
7.3.270.0100.00717.40
7.3.260.0150.00916.20
7.3.250.0080.01216.49
7.3.240.0030.01316.22
7.3.230.0090.00916.41
7.3.210.0230.02116.32
7.3.200.0110.00919.39
7.3.190.0100.00716.61
7.3.180.0110.00416.37
7.3.170.0060.01016.32
7.3.160.0060.01016.36
7.2.330.0060.01216.38
7.2.320.0060.01216.44
7.2.310.0060.01216.57
7.2.300.0130.00316.73
7.2.290.0170.00016.62
7.2.60.0090.00616.72
7.2.00.0070.00719.48
7.1.200.0120.00915.86
7.1.100.0030.01218.14
7.1.70.0000.00716.96
7.1.60.0070.01719.40
7.1.50.0090.00916.91
7.1.00.0030.07722.44
7.0.200.0000.00816.35
7.0.140.0070.06721.93
7.0.100.0030.07320.01
7.0.90.0070.08019.88
7.0.80.0270.08719.87
7.0.70.0100.04719.90
7.0.60.0070.04719.93
7.0.50.0100.03720.25
7.0.40.0100.08020.03
7.0.30.0000.04720.00
7.0.20.0100.08019.91
7.0.10.0170.07720.05
7.0.00.0100.07020.02
5.6.280.0070.07020.92
5.6.250.0000.08720.50
5.6.240.0070.06720.57
5.6.230.0100.08020.57
5.6.220.0100.07720.56
5.6.210.0000.09320.53
5.6.200.0170.07721.12
5.6.190.0070.05720.97
5.6.180.0100.04321.02
5.6.170.0030.08020.96
5.6.160.0100.08320.97
5.6.150.0070.08020.99
5.6.140.0130.07721.08
5.6.130.0000.05720.98
5.6.120.0070.05320.89
5.6.110.0030.06721.04
5.6.100.0030.04320.89
5.6.90.0100.08020.88
5.6.80.0200.05720.35
5.6.70.0130.06320.27
5.6.60.0100.04320.27
5.6.50.0170.06320.44
5.6.40.0130.05020.31
5.6.30.0100.07320.32
5.6.20.0070.08320.38
5.6.10.0130.07020.41
5.6.00.0100.04320.36
5.5.380.0130.06020.30
5.5.370.0100.06020.36
5.5.360.0030.07720.47
5.5.350.0170.07020.40
5.5.340.0030.07720.77
5.5.330.0130.07720.69
5.5.320.0170.06720.59
5.5.310.0030.08320.73
5.5.300.0130.07320.80
5.5.290.0000.08320.71
5.5.280.0100.08020.77
5.5.270.0200.06720.84
5.5.260.0030.08720.84
5.5.250.0070.08320.64
5.5.240.0100.04320.16
5.5.230.0070.04720.18
5.5.220.0030.05720.24
5.5.210.0170.07020.13
5.5.200.0030.08320.16
5.5.190.0100.08320.21
5.5.180.0100.07720.12
5.5.160.0070.07720.02
5.5.150.0100.06720.15
5.5.140.0100.09320.21
5.5.130.0030.06720.12
5.5.120.0130.07020.16
5.5.110.0030.04720.20
5.5.100.0000.08020.11
5.5.90.0070.07720.04
5.5.80.0130.06720.01
5.5.70.0130.07320.08
5.5.60.0070.05020.02
5.5.50.0030.08020.01
5.5.40.0130.06020.00
5.5.30.0100.07320.01
5.5.20.0170.07020.03
5.5.10.0100.07320.00
5.5.00.0130.06019.99
5.4.450.0030.06319.38
5.4.440.0030.08319.40
5.4.430.0170.07319.30
5.4.420.0030.04719.24
5.4.410.0030.08319.24
5.4.400.0200.04319.06
5.4.390.0130.06319.15
5.4.380.0200.07319.06
5.4.370.0100.07318.94
5.4.360.0100.08018.80
5.4.350.0100.06718.96
5.4.340.0100.07318.90
5.4.320.0030.08019.12
5.4.310.0130.06718.94
5.4.300.0100.07318.97
5.4.290.0070.07719.02
5.4.280.0030.04319.07
5.4.270.0100.06719.09
5.4.260.0000.08019.09
5.4.250.0100.04019.14
5.4.240.0070.07718.80
5.4.230.0070.04319.11
5.4.220.0200.06718.78
5.4.210.0030.08319.05
5.4.200.0100.07019.02
5.4.190.0130.04718.97
5.4.180.0070.08018.95
5.4.170.0100.04019.04
5.4.160.0030.07019.12
5.4.150.0070.06318.92
5.4.140.0030.07016.30
5.4.130.0000.06316.29
5.4.120.0070.05016.31
5.4.110.0070.07316.45
5.4.100.0070.04016.34
5.4.90.0100.06716.37
5.4.80.0070.06716.25
5.4.70.0000.06016.19
5.4.60.0070.03316.30
5.4.50.0030.04316.31
5.4.40.0030.04016.43
5.4.30.0070.03316.29
5.4.20.0070.03316.29
5.4.10.0030.03716.25
5.4.00.0070.04015.45
5.3.290.0070.07714.63
5.3.280.0070.07014.54
5.3.270.0070.08014.61
5.3.260.0030.07014.59
5.3.250.0170.07314.58
5.3.240.0070.07714.56
5.3.230.0030.06714.46
5.3.220.0000.07014.55
5.3.210.0070.05314.42
5.3.200.0130.07014.55
5.3.190.0030.07714.41
5.3.180.0030.07714.54
5.3.170.0030.03714.42
5.3.160.0000.05314.42
5.3.150.0070.05714.38
5.3.140.0000.04014.50
5.3.130.0000.04714.48
5.3.120.0030.04014.53
5.3.110.0100.03314.53
5.3.100.0070.03314.02
5.3.90.0000.03713.88
5.3.80.0000.04013.99
5.3.70.0070.03313.98
5.3.60.0070.03313.91
5.3.50.0000.04013.73
5.3.40.0030.03713.91
5.3.30.0000.06713.76
5.3.20.0100.06013.68
5.3.10.0100.06013.59
5.3.00.0030.07013.58
5.2.170.0070.02310.96
5.2.160.0000.02711.21
5.2.150.0070.07310.98
5.2.140.0070.04711.06
5.2.130.0030.05310.95
5.2.120.0070.02310.91
5.2.110.0030.03310.91
5.2.100.0030.06311.17
5.2.90.0030.04310.93
5.2.80.0030.05710.93
5.2.70.0030.04011.07
5.2.60.0030.02711.10
5.2.50.0070.02311.09
5.2.40.0000.03010.98
5.2.30.0000.05310.82
5.2.20.0000.04010.84
5.2.10.0070.02310.86
5.2.00.0030.02710.72
5.1.60.0000.02310.05
5.1.50.0030.04710.05
5.1.40.0070.0209.96
5.1.30.0030.02710.25
5.1.20.0070.02010.25
5.1.10.0000.0279.94
5.1.00.0000.0239.90
5.0.50.0000.0208.59
5.0.40.0030.0178.43
5.0.30.0000.0308.21
5.0.20.0030.0178.18
5.0.10.0000.0208.22
5.0.00.0030.0308.21
4.4.90.0000.0137.48
4.4.80.0000.0177.48
4.4.70.0000.0177.48
4.4.60.0030.0277.48
4.4.50.0030.0137.48
4.4.40.0030.0377.48
4.4.30.0000.0277.48
4.4.20.0000.0137.48
4.4.10.0030.0137.48
4.4.00.0000.0277.48
4.3.110.0000.0177.48
4.3.100.0000.0177.48
4.3.90.0070.0107.48
4.3.80.0000.0237.48
4.3.70.0030.0107.48
4.3.60.0000.0137.48
4.3.50.0030.0207.48
4.3.40.0000.0277.48
4.3.30.0030.0137.48
4.3.20.0030.0137.48
4.3.10.0000.0177.48
4.3.00.0000.0177.48

preferences:
41.89 ms | 401 KiB | 5 Q