3v4l.org

run code in 300+ PHP versions simultaneously
<?php Class A {} $a = new A; $b = $a; // Passed by identifier $a = null; var_dump($b); $a2 = new A; $b2 = &$a2; // Passed by reference $a2 = null; var_dump($b2);

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)
8.5.10.0130.00516.54
8.5.00.0130.00719.93
8.4.160.0120.01323.95
8.4.150.0020.00114.05
8.4.140.0110.01117.70
8.4.130.0050.00417.51
8.4.120.0120.00720.42
8.4.110.0150.00422.80
8.4.100.0060.00217.51
8.4.90.0140.00718.73
8.4.80.0080.01319.40
8.4.70.0330.01118.06
8.4.60.0320.01018.40
8.4.50.0250.01018.62
8.4.40.0320.00717.99
8.4.30.0330.00718.92
8.4.20.0310.00918.29
8.4.10.0310.00518.62
8.3.280.0130.00618.28
8.3.270.0140.00616.58
8.3.260.0140.00516.47
8.3.250.0050.00618.76
8.3.240.0120.00616.48
8.3.230.0090.00616.66
8.3.220.0090.00617.08
8.3.210.0330.00817.62
8.3.200.0300.00617.58
8.3.190.0290.00817.73
8.3.180.0210.00717.58
8.3.170.0270.00418.46
8.3.160.0250.00518.20
8.3.150.0270.00818.97
8.3.140.0310.00817.77
8.3.130.0230.00417.62
8.3.120.0240.00818.44
8.3.110.0280.00819.10
8.3.100.0310.00720.14
8.3.90.0290.00921.04
8.3.80.0250.00817.58
8.3.70.0310.00917.65
8.3.60.0340.00618.26
8.3.50.0280.00918.09
8.3.40.0260.00718.30
8.3.30.0180.00818.31
8.3.20.0250.00820.18
8.3.10.0210.00820.34
8.3.00.0290.00720.84
8.2.290.0140.00420.34
8.2.280.0240.00918.80
8.2.270.0230.00717.90
8.2.260.0220.00618.43
8.2.250.0260.00817.67
8.2.240.0210.00618.20
8.2.230.0200.00619.65
8.2.220.0230.00824.63
8.2.210.0210.00521.04
8.2.200.0170.00617.58
8.2.190.0250.00617.66
8.2.180.0250.00720.76
8.2.170.0290.00618.33
8.2.160.0250.00919.77
8.2.150.0290.00320.67
8.2.140.0250.00720.34
8.2.130.0260.00520.84
8.2.120.0260.00818.69
8.2.110.0270.00918.93
8.2.100.0230.00618.00
8.2.90.0220.00717.99
8.2.80.0260.00618.38
8.2.70.0230.00518.09
8.2.60.0240.00718.13
8.2.50.0210.00618.15
8.2.40.0240.00719.09
8.2.30.0240.00918.52
8.2.20.0260.00718.15
8.2.10.0240.00619.09
8.2.00.0240.00818.53
8.1.330.0140.00422.10
8.1.320.0280.00917.56
8.1.310.0250.00817.71
8.1.300.0210.00618.12
8.1.290.0250.00622.40
8.1.280.0190.00820.76
8.1.270.0230.00319.47
8.1.260.0170.00520.90
8.1.250.0230.00421.48
8.1.240.0220.00719.52
8.1.230.0180.00619.48
8.1.220.0200.00718.03
8.1.210.0210.00818.38
8.1.200.0230.00617.82
8.1.190.0240.00617.79
8.1.180.0210.00418.15
8.1.170.0180.00418.27
8.1.160.0160.00618.37
8.1.150.0220.00618.37
8.1.140.0220.00618.37
8.1.130.0130.00318.81
8.1.120.0160.00617.92
8.1.110.0150.00717.77
8.1.100.0140.00917.79
8.1.90.0190.00617.78
8.1.80.0210.00517.74
8.1.70.0140.00817.78
8.1.60.0170.00717.82
8.1.50.0190.00517.78
8.1.40.0210.00817.80
8.1.30.0190.00717.90
8.1.20.0220.00417.89
8.1.10.0180.00817.81
8.1.00.0170.00817.77
8.0.300.0200.00818.38
8.0.290.0230.00617.70
8.0.280.0210.00618.22
8.0.270.0210.00317.66
8.0.260.0250.00818.24
8.0.250.0190.00917.75
8.0.240.0180.00617.51
8.0.230.0170.00817.49
8.0.220.0200.00517.46
8.0.210.0200.00417.51
8.0.200.0160.00417.47
8.0.190.0120.00317.51
8.0.180.0160.00417.48
8.0.170.0130.00417.47
8.0.160.0140.00517.45
8.0.150.0180.00517.49
8.0.140.0180.00717.48
8.0.130.0190.00816.60
8.0.120.0220.00417.45
8.0.110.0210.00317.47
8.0.100.0130.00717.51
8.0.90.0140.00617.47
8.0.80.0150.00717.25
8.0.70.0140.00717.47
8.0.60.0180.00417.44
8.0.50.0210.00417.46
8.0.30.0150.00617.32
8.0.20.0180.00917.38
8.0.10.0160.00917.37
8.0.00.0190.00617.43
7.4.330.0170.00717.30
7.4.320.0170.00517.28
7.4.300.0160.00317.34
7.4.290.0150.00517.33
7.4.280.0150.00717.35
7.4.270.0170.00617.32
7.4.260.0150.00716.47
7.4.250.0160.00717.33
7.4.240.0170.00417.26
7.4.230.0140.00617.28
7.4.220.0110.00417.11
7.4.210.0140.00616.95
7.4.200.0130.00617.37
7.4.190.0170.00617.64
7.4.180.0190.00417.61
7.4.160.0110.00817.16
7.4.150.0150.00717.20
7.4.140.0150.01017.05
7.4.130.0170.00717.08
7.4.120.0120.00917.10
7.4.110.0140.00717.11
7.4.100.0160.00617.09
7.4.90.0110.00917.08
7.4.80.0130.00717.07
7.4.70.0140.00617.09
7.4.60.0120.01017.04
7.4.50.0130.00717.01
7.4.40.0190.00516.99
7.4.30.0150.00517.11
7.4.20.0110.00817.05
7.4.10.0140.00917.10
7.4.00.0140.00717.11
7.3.330.0150.00617.19
7.3.320.0130.00716.42
7.3.310.0130.00417.02
7.3.300.0140.00317.24
7.3.290.0120.00616.88
7.3.280.0190.00317.54
7.3.270.0140.00616.95
7.3.260.0130.00816.99
7.3.250.0170.00417.04
7.3.240.0140.00617.00
7.3.230.0110.00717.01
7.3.220.0160.00516.98
7.3.210.0120.00616.96
7.3.200.0130.00516.96
7.3.190.0150.00816.97
7.3.180.0140.00616.97
7.3.170.0140.00716.98
7.3.160.0140.00916.96
7.3.150.0150.00816.98
7.3.140.0140.00716.96
7.3.130.0140.00816.96
7.3.120.0140.00716.97
7.3.110.0130.01016.94
7.3.100.0140.00816.94
7.3.90.0150.00617.11
7.3.80.0160.00616.97
7.3.70.0170.00617.03
7.3.60.0140.00817.04
7.3.50.0160.00717.02
7.3.40.0190.00417.08
7.3.30.0180.00317.05
7.3.20.0170.00717.07
7.3.10.0180.00717.02
7.3.00.0140.00617.02

preferences:
36.85 ms | 403 KiB | 5 Q