3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array( 'a' => array( 'a' => 1, ), ); var_dump(isset($a['a']['a'])); var_dump(isset($a['a']['b'])); var_dump(isset($a['b']['a'])); var_dump(isset($a['b']['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)
8.3.60.0140.00718.29
8.3.50.0100.00721.14
8.3.40.0110.00718.67
8.3.30.0110.00718.94
8.3.20.0050.00220.20
8.3.10.0000.00821.84
8.3.00.0070.00022.37
8.2.180.0110.00418.13
8.2.170.0040.01122.96
8.2.160.0100.00320.37
8.2.150.0120.00624.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0060.00319.77
8.2.110.0050.00522.25
8.2.100.0070.00317.78
8.2.90.0040.00417.75
8.2.80.0050.00317.97
8.2.70.0040.00418.03
8.2.60.0080.00018.05
8.2.50.0040.00418.10
8.2.40.0040.00420.42
8.2.30.0040.00418.11
8.2.20.0040.00417.65
8.2.10.0030.00517.55
8.2.00.0000.00717.72
8.1.280.0170.00325.92
8.1.270.0050.00320.39
8.1.260.0040.00426.35
8.1.250.0040.01128.09
8.1.240.0100.00023.76
8.1.230.0000.01122.05
8.1.220.0080.00017.74
8.1.210.0000.00818.77
8.1.200.0030.00617.23
8.1.190.0080.00017.23
8.1.180.0000.00818.10
8.1.170.0060.00318.64
8.1.160.0050.00222.10
8.1.150.0040.00418.44
8.1.140.0050.00217.28
8.1.130.0030.00317.86
8.1.120.0000.00717.42
8.1.110.0040.00417.42
8.1.100.0040.00417.29
8.1.90.0040.00417.38
8.1.80.0080.00017.38
8.1.70.0050.00317.39
8.1.60.0030.00617.54
8.1.50.0000.00817.38
8.1.40.0000.00717.30
8.1.30.0000.00817.46
8.1.20.0050.00317.50
8.1.10.0000.01017.54
8.1.00.0050.00517.49
8.0.300.0000.00819.68
8.0.290.0060.00316.63
8.0.280.0030.00318.43
8.0.270.0050.00217.18
8.0.260.0030.00316.71
8.0.250.0000.00616.86
8.0.240.0050.00316.86
8.0.230.0030.00316.76
8.0.220.0000.00716.81
8.0.210.0000.00816.81
8.0.200.0030.00316.88
8.0.190.0070.00316.82
8.0.180.0000.00716.86
8.0.170.0070.00016.88
8.0.160.0030.00316.84
8.0.150.0070.00016.79
8.0.140.0050.00216.85
8.0.130.0050.00013.26
8.0.120.0020.00516.77
8.0.110.0020.00516.78
8.0.100.0030.00516.92
8.0.90.0070.00016.87
8.0.80.0150.00016.75
8.0.70.0000.00816.67
8.0.60.0040.00416.72
8.0.50.0040.00416.75
8.0.30.0110.01017.02
8.0.20.0030.01517.40
8.0.10.0000.00716.93
8.0.00.0100.01216.65
7.4.330.0020.00215.00
7.4.320.0000.00716.42
7.4.300.0040.00416.54
7.4.290.0030.00316.35
7.4.280.0070.00016.47
7.4.270.0030.00316.52
7.4.260.0000.00716.51
7.4.250.0000.00716.52
7.4.240.0030.00316.53
7.4.230.0000.00716.64
7.4.220.0120.00616.50
7.4.210.0070.00816.50
7.4.200.0030.00316.55
7.4.190.0070.00016.39
7.4.160.0040.01216.12
7.4.150.0090.00917.40
7.4.140.0090.01117.86
7.4.130.0080.00816.45
7.4.120.0130.00516.44
7.4.110.0100.00716.53
7.4.100.0120.00616.50
7.4.90.0080.01016.34
7.4.80.0080.00819.39
7.4.70.0110.01116.32
7.4.60.0070.01016.41
7.4.50.0030.00516.48
7.4.40.0060.01022.77
7.4.30.0060.00916.59
7.4.00.0040.01114.70
7.3.330.0000.00613.18
7.3.320.0000.00513.18
7.3.310.0020.00516.31
7.3.300.0030.00316.30
7.3.290.0000.01816.21
7.3.280.0090.00816.27
7.3.270.0070.01017.40
7.3.260.0110.00716.14
7.3.250.0130.00416.23
7.3.240.0160.00616.15
7.3.230.0130.00616.39
7.3.210.0090.01016.50
7.3.200.0130.00319.39
7.3.190.0120.00916.54
7.3.180.0070.01016.33
7.3.170.0120.00416.30
7.3.160.0100.01016.14
7.3.120.0040.01214.60
7.2.330.0170.00316.56
7.2.320.0170.00016.52
7.2.310.0130.01016.46
7.2.300.0070.01516.54
7.2.290.0090.00816.64
7.2.60.0000.01316.71
7.2.00.0030.01019.40
7.1.200.0220.00015.88
7.1.100.0060.00617.96
7.1.70.0030.00716.82
7.1.60.0120.01219.82
7.1.50.0070.01516.71
7.1.00.0070.03022.30
7.0.200.0000.00716.77
7.0.140.0000.08021.95
7.0.100.0100.08019.88
7.0.90.0170.07319.93
7.0.80.0070.06719.80
7.0.70.0070.04719.82
7.0.60.0070.04019.88
7.0.50.0100.07320.36
7.0.40.0070.07720.04
7.0.30.0070.04020.18
7.0.20.0030.04320.08
7.0.10.0100.08020.08
7.0.00.0130.08020.05
5.6.280.0000.07721.04
5.6.250.0070.05320.55
5.6.240.0030.04320.45
5.6.230.0000.08720.48
5.6.220.0030.04320.51
5.6.210.0130.07320.49
5.6.200.0070.08321.02
5.6.190.0130.07021.09
5.6.180.0030.08320.94
5.6.170.0070.04321.03
5.6.160.0030.04721.10
5.6.150.0070.07020.93
5.6.140.0000.05020.88
5.6.130.0000.05020.97
5.6.120.0130.07320.95
5.6.110.0070.08720.99
5.6.100.0030.09320.91
5.6.90.0030.08721.03
5.6.80.0070.06720.38
5.6.70.0230.06020.30
5.6.60.0070.04720.43
5.6.50.0200.06720.45
5.6.40.0030.08020.42
5.6.30.0100.04020.52
5.6.20.0130.08020.43
5.6.10.0070.08020.43
5.6.00.0130.07020.29
5.5.380.0070.04320.42
5.5.370.0030.07020.29
5.5.360.0070.04020.27
5.5.350.0070.07320.27
5.5.340.0030.05720.71
5.5.330.0100.06720.82
5.5.320.0070.03720.79
5.5.310.0070.07320.88
5.5.300.0070.07720.71
5.5.290.0100.06720.79
5.5.280.0000.05020.89
5.5.270.0030.08720.82
5.5.260.0030.08720.91
5.5.250.0030.07020.73
5.5.240.0130.05320.29
5.5.230.0070.06320.16
5.5.220.0070.08320.08
5.5.210.0070.05020.25
5.5.200.0030.05020.23
5.5.190.0070.04019.98
5.5.180.0130.07020.26
5.5.160.0070.07320.13
5.5.150.0100.07020.22
5.5.140.0200.05020.26
5.5.130.0070.04020.24
5.5.120.0070.04320.27
5.5.110.0100.07320.24
5.5.100.0170.06720.07
5.5.90.0100.07319.94
5.5.80.0030.07320.04
5.5.70.0070.06320.13
5.5.60.0170.06320.11
5.5.50.0100.07720.05
5.5.40.0130.07020.04
5.5.30.0170.07720.10
5.5.20.0100.06320.04
5.5.10.0070.04720.04
5.5.00.0030.04320.02
5.4.450.0030.04319.23
5.4.440.0030.07719.38
5.4.430.0100.06319.44
5.4.420.0230.06319.34
5.4.410.0130.05019.24
5.4.400.0130.07318.82
5.4.390.0130.06019.07
5.4.380.0100.07019.03
5.4.370.0100.04719.24
5.4.360.0070.05318.81
5.4.350.0100.05719.12
5.4.340.0100.07018.96
5.4.320.0100.07718.96
5.4.310.0100.06718.88
5.4.300.0000.06719.00
5.4.290.0100.04718.96
5.4.280.0130.05319.02
5.4.270.0070.07319.04
5.4.260.0070.07719.24
5.4.250.0070.05319.04
5.4.240.0030.08019.07
5.4.230.0070.05718.93
5.4.220.0130.07318.97
5.4.210.0030.07018.97
5.4.200.0070.08019.01
5.4.190.0070.07318.92
5.4.180.0070.04719.08
5.4.170.0070.07319.02
5.4.160.0070.06018.88
5.4.150.0100.04719.00
5.4.140.0070.07016.38
5.4.130.0070.07716.37
5.4.120.0030.03716.36
5.4.110.0000.04016.45
5.4.100.0030.03716.20
5.4.90.0000.04016.49
5.4.80.0000.04716.41
5.4.70.0030.03716.36
5.4.60.0030.04316.43
5.4.50.0070.03316.30
5.4.40.0030.03716.24
5.4.30.0070.03316.23
5.4.20.0030.03316.32
5.4.10.0070.04716.23
5.4.00.0100.05715.70
5.3.290.0100.07714.52
5.3.280.0100.06714.57
5.3.270.0100.07314.44
5.3.260.0070.07314.59
5.3.250.0030.07714.44
5.3.240.0030.04014.60
5.3.230.0030.07314.56
5.3.220.0070.02714.51
5.3.210.0000.04714.56
5.3.200.0000.06314.56
5.3.190.0030.04314.38
5.3.180.0000.04014.55
5.3.170.0030.04014.51
5.3.160.0000.04014.55
5.3.150.0100.04714.52
5.3.140.0100.03014.54
5.3.130.0000.04314.55
5.3.120.0000.04014.52
5.3.110.0030.04014.52
5.3.100.0070.04013.84
5.3.90.0030.06713.99
5.3.80.0130.06313.77
5.3.70.0000.03313.92
5.3.60.0100.07013.99
5.3.50.0030.07713.80
5.3.40.0100.03013.80
5.3.30.0070.03013.76
5.3.20.0000.04313.65
5.3.10.0070.04713.63
5.3.00.0030.06013.60
5.2.170.0030.06312.34
5.2.160.0030.02712.34
5.2.150.0070.02312.34
5.2.140.0030.03012.34
5.2.130.0070.02312.34
5.2.120.0000.03012.34
5.2.110.0070.02312.34
5.2.100.0030.03012.34
5.2.90.0000.03712.34
5.2.80.0070.03712.34
5.2.70.0000.02712.34
5.2.60.0000.03012.34
5.2.50.0070.03312.34
5.2.40.0030.02312.34
5.2.30.0070.02312.34
5.2.20.0000.03312.34
5.2.10.0030.02712.34
5.2.00.0070.02312.34
5.1.60.0000.02712.34
5.1.50.0000.02712.34
5.1.40.0000.02712.34
5.1.30.0000.03012.34
5.1.20.0000.04312.34
5.1.10.0000.02712.34
5.1.00.0030.02312.34
5.0.50.0030.01712.34
5.0.40.0000.02312.34
5.0.30.0000.02712.34
5.0.20.0000.02712.34
5.0.10.0000.02012.34
5.0.00.0000.03012.34
4.4.90.0030.01312.34
4.4.80.0030.02312.34
4.4.70.0000.01712.34
4.4.60.0000.01712.34
4.4.50.0000.01712.34
4.4.40.0030.02312.34
4.4.30.0000.01312.34
4.4.20.0030.01012.34
4.4.10.0100.00712.34
4.4.00.0000.02312.34
4.3.110.0030.01312.34
4.3.100.0000.01312.34
4.3.90.0000.01712.34
4.3.80.0030.02312.34
4.3.70.0000.01712.34
4.3.60.0000.01312.34
4.3.50.0000.01712.34
4.3.40.0030.02712.34
4.3.30.0030.01012.34
4.3.20.0070.01012.34
4.3.10.0000.01712.34
4.3.00.0000.01312.34

preferences:
39.19 ms | 400 KiB | 5 Q