3v4l.org

run code in 300+ PHP versions simultaneously
<?php class a { public function overWrite() { $tmp = &$this; $tmp = new b; } } class b { } $a = new a; $a->overWrite(); var_dump($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)
8.3.60.0150.00416.50
8.3.50.0080.00717.28
8.3.40.0040.01118.63
8.3.30.0070.00718.43
8.3.20.0040.00418.61
8.3.10.0030.00620.59
8.3.00.0000.00719.26
8.2.180.0100.01016.38
8.2.170.0120.00322.96
8.2.160.0000.01420.46
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0070.00026.16
8.2.120.0040.00419.26
8.2.110.0060.00320.73
8.2.100.0090.00317.91
8.2.90.0070.00319.20
8.2.80.0000.00719.25
8.2.70.0000.00817.50
8.2.60.0080.00017.91
8.2.50.0050.00318.07
8.2.40.0040.00418.16
8.2.30.0040.00417.98
8.2.20.0060.00319.23
8.2.10.0000.00717.56
8.2.00.0040.00417.66
8.1.280.0070.00725.92
8.1.270.0070.00024.66
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0070.00423.99
8.1.230.0090.00321.03
8.1.220.0080.00017.74
8.1.210.0080.00018.91
8.1.200.0030.00617.21
8.1.190.0040.00417.28
8.1.180.0050.00318.10
8.1.170.0050.00318.83
8.1.160.0040.00418.86
8.1.150.0060.00318.57
8.1.140.0080.00017.43
8.1.130.0000.00717.69
8.1.120.0000.00717.29
8.1.110.0040.00417.28
8.1.100.0050.00317.27
8.1.90.0040.00417.34
8.1.80.0030.00317.37
8.1.70.0000.00617.37
8.1.60.0060.00317.48
8.1.50.0050.00317.50
8.1.40.0000.00817.35
8.1.30.0030.00617.57
8.1.20.0040.00417.70
8.1.10.0000.00817.46
8.1.00.0000.00917.30
8.0.300.0020.00519.88
8.0.290.0050.00216.63
8.0.280.0070.00018.25
8.0.270.0000.00717.24
8.0.260.0040.00416.75
8.0.250.0000.00716.80
8.0.240.0000.00816.90
8.0.230.0000.00716.93
8.0.220.0000.00716.82
8.0.210.0000.00716.82
8.0.200.0030.00316.84
8.0.190.0000.00816.79
8.0.180.0000.00716.78
8.0.170.0060.00316.76
8.0.160.0030.00316.89
8.0.150.0040.00416.79
8.0.140.0050.00316.84
8.0.130.0060.00013.25
8.0.120.0000.00716.77
8.0.110.0030.00516.86
8.0.100.0040.00416.71
8.0.90.0050.00316.72
8.0.80.0190.00316.81
8.0.70.0080.00016.71
8.0.60.0000.00816.68
8.0.50.0030.00516.69
8.0.30.0140.00417.08
8.0.20.0070.01216.98
8.0.10.0030.00516.76
8.0.00.0080.01216.71
7.4.330.0020.00212.99
7.4.320.0000.00616.50
7.4.300.0050.00216.41
7.4.290.0000.00716.44
7.4.280.0030.00516.52
7.4.270.0000.00716.63
7.4.260.0030.00313.33
7.4.250.0030.00516.59
7.4.240.0030.00416.54
7.4.230.0000.00716.40
7.4.220.0060.01216.56
7.4.210.0080.00816.62
7.4.200.0040.00416.48
7.4.190.0070.00016.65
7.4.160.0080.00816.55
7.4.150.0060.01216.31
7.4.140.0160.00216.52
7.4.130.0090.00916.59
7.4.120.0080.00816.55
7.4.110.0040.01516.38
7.4.100.0030.01316.39
7.4.90.0040.01216.40
7.4.80.0150.00319.39
7.4.70.0060.01216.36
7.4.60.0130.00316.64
7.4.50.0050.00916.22
7.4.40.0000.01216.34
7.4.30.0160.00616.55
7.4.00.0070.00814.93
7.3.330.0000.00613.24
7.3.320.0030.00313.23
7.3.310.0030.00316.27
7.3.300.0060.00016.18
7.3.290.0210.00016.23
7.3.280.0110.00716.19
7.3.270.0100.00716.46
7.3.260.0080.00816.53
7.3.250.0160.01616.44
7.3.240.0140.00816.37
7.3.230.0070.01416.38
7.3.210.0060.01016.26
7.3.200.0120.00416.23
7.3.190.0030.01316.31
7.3.180.0080.00816.32
7.3.170.0150.00316.31
7.3.160.0160.00316.09
7.3.120.0060.00914.79
7.3.110.0090.00914.90
7.3.100.0030.01314.92
7.3.90.0090.00614.89
7.3.80.0070.00714.64
7.3.70.0050.00514.80
7.3.60.0030.00914.35
7.3.50.0040.01114.49
7.3.40.0030.00714.68
7.3.30.0090.00914.69
7.3.20.0000.01216.64
7.3.10.0030.00616.68
7.3.00.0070.01116.69
7.2.330.0150.00316.75
7.2.320.0160.00316.32
7.2.310.0110.00716.58
7.2.300.0060.00916.27
7.2.290.0100.00716.61
7.2.250.0000.01814.70
7.2.240.0130.00615.12
7.2.230.0060.00915.00
7.2.220.0100.00314.89
7.2.210.0060.00915.15
7.2.200.0050.00515.01
7.2.190.0070.01014.95
7.2.180.0080.00314.95
7.2.170.0070.00314.70
7.2.60.0030.01216.77
7.2.00.0030.01019.25
7.1.330.0090.00615.62
7.1.320.0040.00815.72
7.1.310.0130.00315.60
7.1.300.0040.00415.54
7.1.290.0060.00615.78
7.1.280.0100.00315.88
7.1.270.0030.01215.75
7.1.260.0100.00315.91
7.1.200.0060.00315.50
7.1.100.0030.00917.74
7.1.70.0040.01117.02
7.1.60.0040.01919.40
7.1.50.0030.01416.72
7.1.00.0070.06722.35
7.0.200.0000.01016.45
7.0.140.0030.07022.07
7.0.120.0000.07322.16
7.0.60.0030.07719.83
7.0.50.0070.04717.89
7.0.40.0070.09020.11
7.0.30.0270.03720.26
7.0.20.0300.08020.32
7.0.10.0200.04720.19
7.0.00.0070.09020.14
5.6.280.0000.07720.79
5.6.210.0130.07720.71
5.6.200.0030.04318.16
5.6.190.0070.04020.33
5.6.180.0330.06720.55
5.6.170.0130.05320.62
5.6.160.0070.08320.70
5.6.150.0030.05718.18
5.6.140.0070.07718.18
5.6.130.0030.05318.17
5.6.120.0100.06720.99
5.6.110.0030.08320.99
5.6.100.0200.05721.02
5.6.90.0070.08321.00
5.6.80.0170.07020.44
5.6.70.4070.03020.37
5.5.350.0300.07720.38
5.5.340.0030.04717.98
5.5.330.0030.05720.45
5.5.320.0130.04020.13
5.5.310.0270.04020.35
5.5.300.0130.07317.98
5.5.290.0070.07317.98
5.5.280.0070.04020.80
5.5.270.0030.08720.97
5.5.260.0070.07020.82
5.5.250.0070.07320.71
5.5.240.0030.07320.16
5.4.450.0170.07719.18
5.4.440.0070.04719.57
5.4.430.0070.03719.56
5.4.420.0030.08019.20
5.4.410.0030.05719.07
5.4.400.0130.07019.21
5.4.390.0030.08019.25
5.4.380.0100.04019.24
5.4.370.0100.03318.87
5.4.360.0100.03319.15
5.4.350.0100.03719.21
5.4.340.0130.07319.00
5.4.320.0070.08319.14
5.4.310.0030.07719.14
5.4.300.0130.04319.20
5.4.290.0030.05019.24
5.4.280.0130.06718.85
5.4.270.0030.04019.11
5.4.260.0100.07019.14
5.4.250.0130.06018.85
5.4.240.0100.03718.84
5.4.230.0130.06018.86
5.4.220.0070.07319.14
5.4.210.0100.06319.15
5.4.200.0130.06318.97
5.4.190.0100.07319.14
5.4.180.0070.03719.13
5.4.170.0170.06719.23
5.4.160.0070.08019.13
5.4.150.0030.08319.23
5.4.140.0100.07316.43
5.4.130.0030.05016.43
5.4.120.0000.06716.43
5.4.110.0000.05016.72
5.4.100.0070.04316.48
5.4.90.0070.07316.61
5.4.80.0030.07716.49
5.4.70.0030.04016.37
5.4.60.0100.03016.31
5.4.50.0100.05016.45
5.4.40.0070.07316.25
5.4.30.0100.04016.38
5.4.20.0130.06316.39
5.4.10.0070.06716.27
5.4.00.0070.04315.99
5.3.290.0070.06714.67
5.3.280.0070.03714.62
5.3.270.0100.06714.61
5.3.260.0100.06014.64
5.3.250.0200.07314.65
5.3.240.0070.07314.76
5.3.230.0100.07714.74
5.3.220.0000.08714.62
5.3.210.0100.07314.62
5.3.200.0030.04314.73
5.3.190.0130.07014.55
5.3.180.0070.04314.57
5.3.170.0130.07314.64
5.3.160.0070.06314.56
5.3.150.0030.06014.56
5.3.140.0030.07314.61
5.3.130.0030.04014.62
5.3.120.0130.03014.60
5.3.110.0130.07014.70
5.3.100.0070.07714.18
5.3.90.0030.04314.06
5.3.80.0030.03713.91
5.3.70.0070.04013.96
5.3.60.0100.06713.99
5.3.50.0130.05714.10
5.3.40.0030.04714.02
5.3.30.0070.06314.07
5.3.20.0130.03013.74
5.3.10.0070.07013.80
5.3.00.0030.06713.71
5.2.170.0030.05311.10
5.2.160.0000.04011.18
5.2.150.0030.06311.11
5.2.140.0070.03711.10
5.2.130.0030.05011.17
5.2.120.0100.03311.00
5.2.110.0170.05011.09
5.2.100.0100.04011.26
5.2.90.0030.06711.13
5.2.80.0100.05711.14
5.2.70.0100.06010.98
5.2.60.0070.06710.99
5.2.50.0000.05711.02
5.2.40.0070.03311.07
5.2.30.0030.03011.00
5.2.20.0100.04710.88
5.2.10.0000.04710.89
5.2.00.0030.06010.71
5.1.60.0030.02310.05
5.1.50.0070.0309.90
5.1.40.0070.05010.12
5.1.30.0070.05010.34
5.1.20.0070.03710.31
5.1.10.0070.03010.04
5.1.00.0000.02710.22
5.0.50.0030.0278.61
5.0.40.0000.0338.38
5.0.30.0070.0478.24
5.0.20.0000.0408.29
5.0.10.0000.0238.24
5.0.00.0070.0678.21
4.4.90.0000.0238.07
4.4.80.0030.0238.07
4.4.70.0100.0238.07
4.4.60.0000.0378.07
4.4.50.0000.0378.07
4.4.40.0070.0508.07
4.4.30.0070.0308.07
4.4.20.0030.0378.07
4.4.10.0000.0178.07
4.4.00.0070.0508.07
4.3.110.0030.0138.07
4.3.100.0070.0208.07
4.3.90.0070.0238.07
4.3.80.0000.0538.07
4.3.70.0000.0338.07
4.3.60.0030.0338.07
4.3.50.0030.0208.07
4.3.40.0030.0508.07
4.3.30.0000.0208.07
4.3.20.0030.0178.07
4.3.10.0000.0378.07
4.3.00.0000.0278.07

preferences:
50.66 ms | 401 KiB | 5 Q