3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x[] = 'foo'; $k = null; $x[$k] = 'bar'; 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)
8.3.70.0120.00616.50
8.3.60.0100.01016.75
8.3.50.0120.01021.89
8.3.40.0120.00318.70
8.3.30.0070.00719.07
8.3.20.0040.00420.15
8.3.10.0000.00722.08
8.3.00.0080.00020.84
8.2.190.0130.00716.58
8.2.180.0060.01218.42
8.2.170.0110.00422.96
8.2.160.0100.00322.12
8.2.150.0030.00524.18
8.2.140.0050.00324.66
8.2.130.0050.00226.16
8.2.120.0030.00519.66
8.2.110.0100.00020.57
8.2.100.0060.00617.91
8.2.90.0000.00818.22
8.2.80.0050.00317.97
8.2.70.0040.00417.60
8.2.60.0040.00417.93
8.2.50.0100.00018.07
8.2.40.0080.00019.95
8.2.30.0040.00418.02
8.2.20.0040.00417.68
8.2.10.0000.00718.17
8.2.00.0000.00717.71
8.1.280.0100.01025.92
8.1.270.0050.00320.72
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0050.00322.14
8.1.230.0070.00420.90
8.1.220.0040.00417.74
8.1.210.0000.00818.95
8.1.200.0030.00617.23
8.1.190.0060.00317.35
8.1.180.0040.00418.10
8.1.170.0040.00418.59
8.1.160.0040.00421.86
8.1.150.0040.00418.82
8.1.140.0080.00019.04
8.1.130.0000.00817.87
8.1.120.0070.00017.31
8.1.110.0000.00817.44
8.1.100.0000.00717.43
8.1.90.0000.00717.31
8.1.80.0070.00017.36
8.1.70.0040.00417.42
8.1.60.0060.00317.52
8.1.50.0030.00717.43
8.1.40.0050.00317.37
8.1.30.0000.00817.58
8.1.20.0000.00817.53
8.1.10.0070.00317.44
8.1.00.0040.00417.49
8.0.300.0000.00819.96
8.0.290.0060.00316.75
8.0.280.0000.00718.45
8.0.270.0040.00417.09
8.0.260.0000.00717.26
8.0.250.0040.00416.80
8.0.240.0030.00316.90
8.0.230.0030.00316.83
8.0.220.0000.00616.79
8.0.210.0000.00716.89
8.0.200.0030.00316.94
8.0.190.0000.00716.78
8.0.180.0000.00716.89
8.0.170.0030.00516.79
8.0.160.0030.00316.75
8.0.150.0030.00316.66
8.0.140.0000.00716.80
8.0.130.0030.00313.25
8.0.120.0000.00916.85
8.0.110.0000.00816.88
8.0.100.0030.00516.73
8.0.90.0040.00416.89
8.0.80.0140.00716.77
8.0.70.0050.00316.94
8.0.60.0040.00416.82
8.0.50.0000.00816.89
8.0.30.0080.01216.90
8.0.20.0130.00717.40
8.0.10.0000.00716.77
8.0.00.0130.00816.77
7.4.330.0000.00615.03
7.4.320.0030.00316.44
7.4.300.0000.00616.37
7.4.290.0030.00316.45
7.4.280.0070.00016.41
7.4.270.0070.00016.36
7.4.260.0030.00316.49
7.4.250.0000.00716.43
7.4.240.0040.00316.40
7.4.230.0030.00316.38
7.4.220.0120.00616.49
7.4.210.0090.00616.45
7.4.200.0070.00016.25
7.4.160.0110.00616.45
7.4.150.0100.01617.40
7.4.140.0120.01017.86
7.4.130.0130.00416.48
7.4.120.0100.00616.40
7.4.110.0060.01516.38
7.4.100.0130.01016.52
7.4.90.0030.01316.50
7.4.80.0060.01316.49
7.4.70.0070.01116.42
7.4.60.0090.00916.51
7.4.50.0000.00716.47
7.4.40.0080.00816.51
7.4.30.0150.00316.38
7.4.00.0100.00414.99
7.3.330.0070.00013.07
7.3.320.0100.00313.16
7.3.310.0040.00416.44
7.3.300.0000.00716.28
7.3.290.0000.00616.24
7.3.280.0100.00616.34
7.3.270.0130.00617.40
7.3.260.0180.00616.38
7.3.250.0050.01716.33
7.3.240.0170.00016.49
7.3.230.0070.01116.47
7.3.210.0140.00316.48
7.3.200.0070.01419.39
7.3.190.0030.01316.35
7.3.180.0160.00016.70
7.3.170.0090.01216.40
7.3.160.0120.00616.49
7.3.120.0110.00714.95
7.3.110.0140.00314.82
7.3.100.0030.01214.48
7.3.90.0110.00014.85
7.3.80.0090.00614.74
7.3.70.0030.00515.00
7.3.60.0060.00914.78
7.3.50.0030.01414.55
7.3.40.0090.00014.82
7.3.30.0070.00714.47
7.3.20.0000.01516.62
7.3.10.0070.00716.75
7.3.00.0120.00316.55
7.2.330.0120.00616.29
7.2.320.0130.00716.74
7.2.310.0080.00816.51
7.2.300.0130.00416.57
7.2.290.0110.01116.63
7.2.250.0040.01414.80
7.2.240.0040.01515.07
7.2.230.0070.01115.05
7.2.220.0030.01014.97
7.2.210.0000.00914.98
7.2.200.0040.01114.84
7.2.190.0090.00614.89
7.2.180.0100.00715.02
7.2.170.0040.00814.90
7.2.60.0060.00916.84
7.2.00.0030.00618.95
7.1.330.0030.01015.65
7.1.320.0070.00315.94
7.1.310.0080.00315.94
7.1.300.0070.00715.50
7.1.290.0050.00315.53
7.1.280.0000.01015.88
7.1.270.0120.00015.78
7.1.260.0060.00615.73
7.1.200.0040.00815.88
7.1.100.0040.00718.00
7.1.70.0030.00617.28
7.1.60.0100.01419.46
7.1.50.0070.01716.59
7.1.00.0130.06722.42
7.0.200.0130.00314.52
7.0.140.0070.06321.95
7.0.60.0100.07719.96
7.0.50.0030.06317.78
7.0.40.0070.04320.23
7.0.30.0270.06320.26
7.0.20.0300.04020.11
7.0.10.0070.04320.16
7.0.00.0070.09020.32
5.6.280.0130.06321.02
5.6.210.0100.07020.66
5.6.200.0130.07318.13
5.6.190.0130.04320.35
5.6.180.0430.07720.61
5.6.170.0370.04320.51
5.6.160.0000.09320.62
5.6.150.0100.07018.21
5.6.140.0100.08018.14
5.6.130.0070.07318.20
5.6.120.0030.04321.09
5.6.110.0100.04021.12
5.6.100.0070.04020.98
5.6.90.0000.05020.87
5.6.80.0070.04020.38
5.5.350.0230.03020.46
5.5.340.0070.05018.02
5.5.330.0070.03720.06
5.5.320.0000.05320.17
5.5.310.0230.03720.21
5.5.300.0100.03317.97
5.5.290.0070.03717.88
5.5.280.0070.04020.88
5.5.270.0200.07320.88
5.5.260.0070.07020.83
5.5.250.0070.07720.68
5.5.240.0170.06320.04
5.4.450.0700.04719.22
5.4.440.0670.06319.38
5.4.430.0630.06719.60
5.4.420.0900.06719.54
5.4.410.1030.05719.14
5.4.400.0930.06319.16
5.4.390.0900.05018.46
5.4.380.0770.06318.72
5.4.370.0930.04718.70
5.4.360.0930.05018.59
5.4.350.0970.05018.62
5.4.340.0930.05718.68
5.4.320.0830.05318.59
5.4.310.0830.05318.67
5.4.300.0900.05718.65
5.4.290.1030.05318.72
5.4.280.0970.05718.50
5.4.270.1000.05018.45
5.4.260.1000.05018.49
5.4.250.1030.05018.74
5.4.240.1000.05718.61
5.4.230.0930.05318.49
5.4.220.0930.05718.47
5.4.210.0930.05718.61
5.4.200.0970.04716.52
5.4.190.1030.04318.52
5.4.180.1200.06018.70
5.4.170.0900.05718.55
5.4.160.1100.04318.70
5.4.150.0970.05318.60
5.4.140.0970.05016.22
5.4.130.0970.05716.26
5.4.120.0930.05716.27
5.4.110.0930.05716.21
5.4.100.1030.04016.16
5.4.90.0930.05316.28
5.4.80.1000.05016.15
5.4.70.0970.05016.06
5.4.60.0970.05016.32
5.4.50.0930.05316.01
5.4.40.1000.05016.05
5.4.30.1070.04316.22
5.4.20.0900.05316.33
5.4.10.1130.04316.18
5.4.00.0970.05015.72
5.3.290.0930.06314.64
5.3.280.1030.04714.54
5.3.270.1070.06714.70
5.3.260.0970.05714.58
5.3.250.1100.06014.57
5.3.240.1130.05014.57
5.3.230.1000.05314.50
5.3.220.1070.04314.61
5.3.210.1000.05714.65
5.3.200.0830.05014.57
5.3.190.0970.06014.52
5.3.180.0900.05014.63
5.3.170.0770.05714.54
5.3.160.0770.05714.49
5.3.150.0970.05014.52
5.3.140.0970.05014.52
5.3.130.0930.05714.44
5.3.120.0900.06314.52
5.3.110.0870.06714.57
5.3.100.0970.05314.01
5.3.90.0930.04714.12
5.3.80.0670.06014.00
5.3.70.0870.05014.11
5.3.60.0900.06014.00
5.3.50.0970.06313.92
5.3.40.0870.05713.89
5.3.30.0770.05313.93
5.3.20.0900.05013.72
5.3.10.0470.05013.56
5.3.00.1170.07013.62
5.2.170.0900.05311.20
5.2.160.0600.05311.09
5.2.150.0570.05711.28
5.2.140.0530.06011.13
5.2.130.0470.05311.16
5.2.120.0770.03311.16
5.2.110.0500.03711.03
5.2.100.0530.04311.01
5.2.90.0470.04711.17
5.2.80.0800.03711.15
5.2.70.0670.03711.02
5.2.60.0600.04011.10
5.2.50.0770.03711.05
5.2.40.0600.05010.99
5.2.30.0500.05311.02
5.2.20.0500.04710.99
5.2.10.0500.04310.92
5.2.00.0700.04010.68
5.1.60.0630.04010.02
5.1.50.0670.0379.93
5.1.40.0800.03310.09
5.1.30.0370.04710.45
5.1.20.0670.04710.46
5.1.10.0530.04710.13
5.1.00.0500.05310.18
5.0.50.0430.0338.52
5.0.40.0200.0378.40
5.0.30.0430.0578.24
5.0.20.0270.0338.21
5.0.10.0330.0408.35
5.0.00.0300.0478.23
4.4.90.0270.0205.91
4.4.80.0330.0205.87
4.4.70.0200.0335.90
4.4.60.0330.0335.86
4.4.50.0400.0235.93
4.4.40.0300.0405.91
4.4.30.0200.0205.88
4.4.20.0300.0305.91
4.4.10.0230.0235.94
4.4.00.0400.0405.96
4.3.110.0330.0175.86
4.3.100.0400.0275.81
4.3.90.0330.0235.81
4.3.80.0300.0405.90
4.3.70.0270.0235.80
4.3.60.0200.0235.91
4.3.50.0330.0235.78
4.3.40.0300.0335.74
4.3.30.0170.0275.05
4.3.20.0330.0235.05
4.3.10.0200.0275.05
4.3.00.0230.01314.57

preferences:
50.55 ms | 401 KiB | 5 Q