3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 1; var_dump((unset)$x); var_dump($x);

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)
8.4.20.0090.00617.72
8.4.10.0090.00017.64
8.3.140.0090.00918.46
8.3.130.0090.00016.60
8.3.120.0040.00418.70
8.3.110.0090.00920.94
8.3.100.0000.00824.06
8.3.90.0150.00026.77
8.3.80.0060.00317.97
8.3.70.0100.00716.50
8.3.60.0120.00318.68
8.3.50.0110.00521.06
8.3.40.0070.01118.49
8.3.30.0060.00918.54
8.3.20.0030.01020.21
8.3.10.0120.00323.41
8.3.00.0050.00323.66
8.2.260.0040.01518.14
8.2.250.0000.00916.36
8.2.240.0030.00618.91
8.2.230.0040.00422.58
8.2.220.0030.00737.54
8.2.210.0110.00426.77
8.2.200.0060.00316.50
8.2.190.0120.00318.43
8.2.180.0080.01516.38
8.2.170.0120.00322.96
8.2.160.0100.00722.08
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0100.00017.50
8.2.110.0060.00321.12
8.2.100.0030.00917.59
8.2.90.0060.00318.92
8.2.80.0040.00417.97
8.2.70.0000.00817.50
8.2.60.0080.00017.80
8.2.50.0000.00818.07
8.2.40.0000.00718.22
8.2.30.0030.00517.87
8.2.20.0040.00417.54
8.2.10.0000.00817.91
8.2.00.0040.00417.80
8.1.310.0070.01118.55
8.1.300.0110.00717.85
8.1.290.0030.00630.84
8.1.280.0090.00625.92
8.1.270.0000.00820.20
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0030.00722.07
8.1.230.0070.00420.89
8.1.220.0080.00017.74
8.1.210.0000.00918.77
8.1.200.0040.00417.10
8.1.190.0040.00416.88
8.1.180.0030.00518.10
8.1.170.0080.00018.57
8.1.160.0030.00618.59
8.1.150.0080.00018.78
8.1.140.0040.00417.21
8.1.130.0070.00017.59
8.1.120.0000.00717.32
8.1.110.0040.00417.35
8.1.100.0070.00017.38
8.1.90.0070.00017.32
8.1.80.0000.00717.28
8.1.70.0000.00717.33
8.1.60.0020.00517.47
8.1.50.0080.00017.41
8.1.40.0040.00417.23
8.1.30.0040.00417.34
8.1.20.0040.00417.47
8.1.10.0040.00417.23
8.1.00.0040.00417.36
8.0.300.0040.00419.89
8.0.290.0000.00716.63
8.0.280.0000.00818.23
8.0.270.0030.00317.08
8.0.260.0040.00417.10
8.0.250.0040.00416.78
8.0.240.0030.00316.95
8.0.230.0030.00616.86
8.0.220.0060.00316.82
8.0.210.0030.00316.72
8.0.200.0070.00016.79
8.0.190.0080.00016.85
8.0.180.0000.00716.85
8.0.170.0000.00816.85
8.0.160.0000.00716.80
8.0.150.0030.00516.76
8.0.140.0000.00816.68
8.0.130.0030.00313.17
8.0.120.0080.00016.76
8.0.110.0050.00316.71
8.0.100.0050.00316.60
8.0.90.0050.00316.75
8.0.80.0070.01416.81
8.0.70.0040.00416.59
8.0.60.0000.00816.67
8.0.50.0000.00816.88
8.0.30.0130.00416.92
8.0.20.0120.01217.40
8.0.10.0050.00216.84
8.0.00.0110.01016.58
7.4.330.0030.00315.08
7.4.320.0000.00616.52
7.4.300.0000.00716.43
7.4.290.0000.00716.43
7.4.280.0040.00416.44
7.4.270.0030.00316.43
7.4.260.0000.00716.48
7.4.250.0030.00516.45
7.4.240.0020.00516.58
7.4.230.0000.00716.48
7.4.220.0060.01216.55
7.4.210.0130.00316.56
7.4.200.0030.00316.71
7.4.160.0090.00616.55
7.4.150.0100.00717.40
7.4.140.0160.01017.86
7.4.130.0080.01016.49
7.4.120.0110.00716.52
7.4.110.0100.00616.16
7.4.100.0170.01016.57
7.4.90.0120.00616.41
7.4.80.0100.00619.39
7.4.70.0090.00616.75
7.4.60.0060.00916.45
7.4.50.0030.00316.39
7.4.40.0100.01016.27
7.4.30.0130.01016.32
7.4.00.0100.00315.23
7.3.330.0020.00213.18
7.3.320.0000.00513.20
7.3.310.0030.00316.12
7.3.300.0040.00416.10
7.3.290.0080.00716.26
7.3.280.0080.01116.27
7.3.270.0040.01317.40
7.3.260.0130.01016.42
7.3.250.0120.00516.33
7.3.240.0090.00916.31
7.3.230.0030.02016.46
7.3.210.0030.01316.30
7.3.200.0060.00916.51
7.3.190.0070.00716.48
7.3.180.0080.00816.22
7.3.170.0070.01416.50
7.3.160.0070.01016.46
7.2.330.0060.01216.38
7.2.320.0090.01116.45
7.2.310.0120.00616.23
7.2.300.0130.00416.38
7.2.290.0160.00616.59
7.2.60.0110.00716.63
7.2.00.0060.00619.21
7.1.200.0030.00815.67
7.1.100.0050.00518.03
7.1.70.0000.00817.02
7.1.60.0100.01419.12
7.1.50.0100.01016.71
7.1.00.0030.07722.32
7.0.200.0230.00016.79
7.0.60.0030.06321.66
7.0.50.0100.07717.83
7.0.40.0070.07320.09
7.0.30.0200.06320.00
7.0.20.0270.07020.18
7.0.10.0100.07720.17
7.0.00.0170.06720.08
5.6.280.0030.06321.04
5.6.210.0070.04020.68
5.6.200.0100.05018.18
5.6.190.0070.05720.53
5.6.180.0300.06320.41
5.6.170.0230.05720.54
5.6.160.0070.04020.52
5.6.150.0070.08018.18
5.6.140.0070.08018.15
5.6.130.0070.08718.11
5.6.120.0100.05021.14
5.6.110.0100.08320.97
5.6.100.0130.07021.02
5.6.90.0030.06020.96
5.6.80.0100.07720.40
5.5.350.0130.07320.51
5.5.340.0070.08317.95
5.5.330.0070.07320.12
5.5.320.0200.04020.27
5.5.310.0170.05320.13
5.5.300.0000.04318.02
5.5.290.0070.08017.91
5.5.280.0030.07020.86
5.5.270.0100.09020.83
5.5.260.0070.08320.75
5.5.250.0070.06720.60
5.5.240.0270.06320.22
5.4.450.0100.07719.15
5.4.440.0130.05319.50
5.4.430.0070.03719.11
5.4.420.0070.03719.40
5.4.410.0000.04019.37
5.4.400.0030.04019.16
5.4.390.0130.03019.10
5.4.380.0030.04318.80
5.4.370.0070.03319.15
5.4.360.0000.04019.00
5.4.350.0100.03718.79
5.4.340.0030.04319.12
5.4.320.0070.03719.12
5.4.310.0070.03319.14
5.4.300.0100.03319.08
5.4.290.0030.03719.15
5.4.280.0030.03719.08
5.4.270.0070.04019.07
5.4.260.0100.03019.14
5.4.250.0100.03718.91
5.4.240.0030.03719.14
5.4.230.0030.04718.99
5.4.220.0030.03719.02
5.4.210.0100.04018.99
5.4.200.0100.03018.78
5.4.190.0030.07319.13
5.4.180.0000.04019.11
5.4.170.0100.05019.13
5.4.160.0070.07319.14
5.4.150.0170.07019.13
5.4.140.0070.03316.37
5.4.130.0200.05716.26
5.4.120.0200.04016.43
5.4.110.0100.07016.23
5.4.100.0070.07716.28
5.4.90.0070.04716.38
5.4.80.0070.06016.21
5.4.70.0100.06716.25
5.4.60.0070.04716.21
5.4.50.0130.06016.34
5.4.40.0070.07716.35
5.4.30.0170.06316.34
5.4.20.0100.07016.29
5.4.10.0070.07316.58
5.4.00.0100.07015.93
5.3.290.0070.04014.56
5.3.280.0030.03714.38
5.3.270.0030.04014.57
5.3.260.0070.07714.54
5.3.250.0070.07314.53
5.3.240.0070.04314.57
5.3.230.0100.07314.54
5.3.220.0070.07014.65
5.3.210.0100.07314.52
5.3.200.0130.06714.58
5.3.190.0100.07014.53
5.3.180.0030.07714.52
5.3.170.0070.04314.51
5.3.160.0030.04714.66
5.3.150.0130.03714.49
5.3.140.0100.05314.49
5.3.130.0130.07314.44
5.3.120.0170.06714.44
5.3.110.0030.05014.47
5.3.100.0100.06713.98
5.3.90.0170.06313.96
5.3.80.0100.04013.96
5.3.70.0000.04013.98
5.3.60.0000.04314.02
5.3.50.0030.03713.92
5.3.40.0070.04013.88
5.3.30.0030.04313.70
5.3.20.0070.08013.62
5.3.10.0000.03713.74
5.3.00.0100.07313.45
5.2.170.0030.06711.08
5.2.160.0030.04311.13
5.2.150.0070.06011.13
5.2.140.0030.05011.21
5.2.130.0000.06711.18
5.2.120.0130.05011.25
5.2.110.0030.06710.95
5.2.100.0070.04711.08
5.2.90.0030.06311.18
5.2.80.0070.06011.08
5.2.70.0130.05710.91
5.2.60.0000.05311.03
5.2.50.0000.06311.00
5.2.40.0070.04310.92
5.2.30.0000.04310.91
5.2.20.0070.05010.90
5.2.10.0030.03010.86
5.2.00.0030.03010.75
5.1.60.0030.03010.00
5.1.50.0070.0539.98
5.1.40.0030.0479.95
5.1.30.0070.02310.37
5.1.20.0070.05010.37
5.1.10.0070.04010.06
5.1.00.0000.04710.04
5.0.50.0030.0408.52
5.0.40.0000.0438.42
5.0.30.0100.0508.05
5.0.20.0070.0338.12
5.0.10.0030.0408.11
5.0.00.0000.0508.13
4.4.90.0030.0337.31
4.4.80.0130.0137.31
4.4.70.0000.0377.31
4.4.60.0100.0207.31
4.4.50.0000.0337.31
4.4.40.0000.0607.31
4.4.30.0030.0377.31
4.4.20.0000.0177.31
4.4.10.0030.0277.31
4.4.00.0000.0577.31
4.3.110.0030.0407.31
4.3.100.0030.0237.31
4.3.90.0070.0337.31
4.3.80.0000.0277.31
4.3.70.0000.0207.31
4.3.60.0000.0377.31
4.3.50.0070.0277.31
4.3.40.0030.0507.31
4.3.30.0030.0307.31
4.3.20.0000.0337.31
4.3.10.0000.0277.31
4.3.00.0030.0337.31

preferences:
35.56 ms | 403 KiB | 5 Q