3v4l.org

run code in 300+ PHP versions simultaneously
<?php $config = []; var_dump(isset($config['a']['b']));

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)
8.3.60.0110.00418.31
8.3.50.0190.00722.05
8.3.40.0170.00418.84
8.3.30.0110.00418.79
8.3.20.0080.00020.09
8.3.10.0000.00723.66
8.3.00.0140.00420.52
8.2.180.0030.01316.61
8.2.170.0090.00622.96
8.2.160.0070.00722.27
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0060.00326.16
8.2.120.0080.00017.63
8.2.110.0060.00322.17
8.2.100.0000.01317.78
8.2.90.0040.00419.21
8.2.80.0040.00417.97
8.2.70.0030.00517.50
8.2.60.0080.00018.02
8.2.50.0060.00318.07
8.2.40.0060.00318.16
8.2.30.0070.00017.98
8.2.20.0050.00217.56
8.2.10.0040.00419.30
8.2.00.0040.00417.72
8.1.280.0100.00325.92
8.1.270.0040.00423.71
8.1.260.0050.00326.35
8.1.250.0000.00828.09
8.1.240.0050.00523.98
8.1.230.0070.00419.16
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0090.00017.25
8.1.190.0030.00517.29
8.1.180.0000.00918.10
8.1.170.0080.00018.59
8.1.160.0040.00421.87
8.1.150.0060.00618.62
8.1.140.0030.00517.48
8.1.130.0030.00317.80
8.1.120.0000.00717.28
8.1.110.0040.00417.33
8.1.100.0070.00017.32
8.1.90.0050.00217.32
8.1.80.0070.00017.37
8.1.70.0030.00317.31
8.1.60.0060.00317.54
8.1.50.0030.00517.34
8.1.40.0040.00417.43
8.1.30.0070.00017.52
8.1.20.0000.00817.60
8.1.10.0000.00717.55
8.1.00.0040.00417.36
8.0.300.0030.00318.77
8.0.290.0060.00317.05
8.0.280.0070.00018.36
8.0.270.0070.00017.18
8.0.260.0000.00716.75
8.0.250.0000.00716.82
8.0.240.0060.00316.93
8.0.230.0040.00416.88
8.0.220.0070.00316.81
8.0.210.0000.00716.77
8.0.200.0000.00716.89
8.0.190.0030.00516.90
8.0.180.0050.00216.80
8.0.170.0050.00316.86
8.0.160.0030.00616.79
8.0.150.0000.00716.80
8.0.140.0000.00716.67
8.0.130.0000.00513.25
8.0.120.0040.00416.67
8.0.110.0000.00816.76
8.0.100.0000.00916.82
8.0.90.0030.00316.66
8.0.80.0120.00816.74
8.0.70.0000.00716.91
8.0.60.0000.00716.83
8.0.50.0030.00516.81
8.0.30.0130.00916.97
8.0.20.0120.00717.40
8.0.10.0000.00816.98
8.0.00.0140.00416.63
7.4.330.0000.00515.08
7.4.320.0060.00016.53
7.4.300.0070.00016.48
7.4.290.0000.00716.57
7.4.280.0070.00016.51
7.4.270.0030.00316.50
7.4.260.0000.00816.52
7.4.250.0000.00716.41
7.4.240.0050.00216.40
7.4.230.0030.00316.42
7.4.220.0190.00316.55
7.4.210.0090.00616.44
7.4.200.0070.00016.53
7.4.190.0030.00316.57
7.4.160.0060.00916.43
7.4.150.0070.01017.40
7.4.140.0110.00517.86
7.4.130.0050.01216.49
7.4.120.0080.00816.45
7.4.110.0100.00716.56
7.4.100.0100.00716.46
7.4.90.0030.01516.39
7.4.80.0200.00316.13
7.4.70.0130.00316.35
7.4.60.0100.01316.42
7.4.50.0050.00316.12
7.4.40.0060.00622.77
7.4.30.0100.00716.29
7.4.00.0070.01014.82
7.3.330.0000.00713.23
7.3.320.0050.00013.09
7.3.310.0030.00316.18
7.3.300.0060.00016.20
7.3.290.0070.00716.31
7.3.280.0070.01116.28
7.3.270.0060.01017.40
7.3.260.0100.00716.19
7.3.250.0080.00916.34
7.3.240.0090.00916.18
7.3.230.0080.00816.39
7.3.210.0070.01116.21
7.3.200.0040.01619.39
7.3.190.0100.00716.32
7.3.180.0030.01216.30
7.3.170.0040.01216.37
7.3.160.0060.01016.41
7.3.120.0070.00714.94
7.3.10.0040.01016.53
7.3.00.0090.00516.67
7.2.330.0090.01216.72
7.2.320.0030.01816.30
7.2.310.0030.01216.55
7.2.300.0110.00616.24
7.2.290.0090.00916.57
7.2.130.0050.00616.72
7.2.120.0090.00516.80
7.2.110.0060.00916.61
7.2.100.0060.00516.48
7.2.90.0080.00816.82
7.2.80.0110.00516.84
7.2.70.0020.01116.54
7.2.60.0040.00816.68
7.2.50.0060.00916.64
7.2.40.0060.00516.90
7.2.30.0000.01516.87
7.2.20.0020.01216.92
7.2.10.0000.01316.66
7.2.00.0080.00916.76
7.1.250.0080.00315.64
7.1.200.0070.00315.81
7.1.100.0000.01118.08
7.1.70.0040.00716.93
7.1.60.0100.01319.32
7.1.50.0030.01716.57
7.1.00.0070.07322.57
7.0.200.0120.00016.67
7.0.140.0070.06722.12
7.0.60.0030.04019.82
7.0.50.0100.05017.80
7.0.40.0100.03720.40
7.0.30.0300.06020.22
7.0.20.0370.07320.17
7.0.10.0130.08020.21
7.0.00.0030.08719.99
5.6.280.0100.06720.89
5.6.210.0100.07720.46
5.6.200.0070.04018.18
5.6.190.0030.04320.43
5.6.180.0300.04020.59
5.6.170.0430.04020.51
5.6.160.0100.05720.59
5.6.150.0100.08018.21
5.6.140.0030.06318.21
5.6.130.0000.06318.11
5.6.120.0030.04021.14
5.6.110.0030.06020.98
5.6.100.0200.07021.00
5.6.90.0130.05720.87
5.6.80.0070.07320.52
5.5.350.4270.04320.31
5.5.340.0070.08317.88
5.5.330.0100.05320.56
5.5.320.0600.06320.17
5.5.310.0400.07720.29
5.5.300.0000.07317.91
5.5.290.0070.05317.98
5.5.280.0130.06720.84
5.5.270.0170.07720.79
5.5.260.0170.07720.75
5.5.250.0100.08320.55
5.5.240.0070.08720.03
5.4.450.3230.03719.49
5.4.440.4430.04019.38
5.4.430.1100.04719.49
5.4.420.3400.04319.32
5.4.410.3670.04019.36
5.4.400.4070.03719.20
5.4.390.4100.03018.87
5.4.380.3870.03319.17
5.4.370.3700.04719.04
5.4.360.4030.03318.87
5.4.350.4270.04318.92
5.4.340.3700.03719.20
5.4.320.4130.03719.16
5.4.310.3770.04318.92
5.4.300.4270.03719.17
5.4.290.4030.03019.08
5.4.280.4430.03319.20
5.4.270.4000.04019.06
5.4.260.4000.03319.15
5.4.250.4400.04018.96
5.4.240.3930.03719.15
5.4.230.3330.03719.08
5.4.220.3700.03719.10
5.4.210.4170.03719.15
5.4.200.3930.03719.12
5.4.190.3900.03319.25
5.4.180.3830.03319.05
5.4.170.4570.03019.12
5.4.160.4070.03719.14
5.4.150.3800.03718.98
5.4.140.4470.05016.21
5.4.130.4170.03016.40
5.4.120.4130.03716.41
5.4.110.3570.03316.32
5.4.100.3970.03716.13
5.4.90.4030.04016.43
5.4.80.4100.03016.24
5.4.70.4230.03716.14
5.4.60.3570.03016.34
5.4.50.3730.04016.44
5.4.40.5030.03316.41
5.4.30.4000.03716.46
5.4.20.3970.03316.13
5.4.10.4200.03316.09
5.4.00.3900.03015.66
5.3.290.3800.04014.59
5.3.280.4100.03314.49
5.3.270.4330.03014.50
5.3.260.4530.04314.50
5.3.250.3830.04014.39
5.3.240.3770.03714.63
5.3.230.4200.03314.69
5.3.220.3930.03014.45
5.3.210.4000.03314.52
5.3.200.4130.03714.46
5.3.190.3830.03714.51
5.3.180.4400.03714.54
5.3.170.4370.04314.38
5.3.160.3900.04014.50
5.3.150.4130.03714.51
5.3.140.5100.03314.38
5.3.130.4130.03714.48
5.3.120.4630.03714.58
5.3.110.3870.04714.52
5.3.100.3970.03314.04
5.3.90.4070.04313.81
5.3.80.4000.03313.99
5.3.70.4330.03313.95
5.3.60.4070.03313.94
5.3.50.3830.03713.96
5.3.40.3130.03713.89
5.3.30.3870.03713.73
5.3.20.0000.04013.50
5.3.10.1470.03013.49
5.3.00.3330.04013.57
5.2.170.2930.03311.00
5.2.160.3570.02711.07
5.2.150.3200.03010.97
5.2.140.0500.03311.07
5.2.130.0030.03011.08
5.2.120.0000.03311.09
5.2.110.2800.03311.04
5.2.100.2100.02711.07
5.2.90.2930.02711.00
5.2.80.3030.02711.02
5.2.70.2800.03010.91
5.2.60.3000.03011.02
5.2.50.2870.03311.00
5.2.40.1900.03311.14
5.2.30.1930.03310.85
5.2.20.2130.02010.88
5.2.10.1930.02710.86
5.2.00.1870.02310.73
5.1.60.1470.0209.98
5.1.50.2270.02710.00
5.1.40.2100.0239.96
5.1.30.1630.02710.39
5.1.20.1830.02710.43
5.1.10.2670.02310.09
5.1.00.2570.02310.05
5.0.50.1370.0238.59
5.0.40.1500.0238.45
5.0.30.1500.0338.13
5.0.20.0030.0438.25
5.0.10.0000.0438.23
5.0.00.0030.0638.16
4.4.90.0970.0175.83
4.4.80.1330.0135.79
4.4.70.0700.0135.89
4.4.60.1000.0175.82
4.4.50.1300.0135.80
4.4.40.0970.0235.82
4.4.30.0970.0175.84
4.4.20.0400.0105.87
4.4.10.1430.0205.88
4.4.00.1470.0275.80
4.3.110.1630.0135.82
4.3.100.0700.0205.71
4.3.90.0070.0135.75
4.3.80.0030.0575.74
4.3.70.0070.0135.83
4.3.60.0030.0275.84
4.3.50.0000.0235.79
4.3.40.0000.0535.63
4.3.30.0000.0374.84
4.3.20.0000.0374.84
4.3.10.1070.0174.84
4.3.00.0930.0174.84

preferences:
46.98 ms | 401 KiB | 5 Q