3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a ['a'] = null; $tmp = $a['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)
8.3.40.0070.00718.80
8.3.30.0120.00919.10
8.3.20.0040.00420.26
8.3.10.0040.00420.48
8.3.00.0030.00519.16
8.2.170.0200.00022.96
8.2.160.0070.00720.35
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0030.00526.16
8.2.120.0070.00020.92
8.2.110.0060.00322.02
8.2.100.0040.00717.84
8.2.90.0030.00519.08
8.2.80.0060.00317.97
8.2.70.0030.00517.38
8.2.60.0060.00317.80
8.2.50.0000.00918.07
8.2.40.0030.00518.16
8.2.30.0040.00419.34
8.2.20.0030.00517.74
8.2.10.0040.00418.04
8.2.00.0000.00817.57
8.1.270.0170.00323.85
8.1.260.0140.00326.35
8.1.250.0100.00728.09
8.1.240.0090.00023.96
8.1.230.0140.00019.15
8.1.220.0000.00717.76
8.1.210.0040.00418.77
8.1.200.0040.00417.22
8.1.190.0000.00817.23
8.1.180.0040.00418.10
8.1.170.0050.00318.50
8.1.160.0040.00421.93
8.1.150.0000.00718.84
8.1.140.0040.00417.37
8.1.130.0000.00717.80
8.1.120.0050.00317.40
8.1.110.0050.00517.36
8.1.100.0030.00417.27
8.1.90.0040.00417.29
8.1.80.0070.00017.35
8.1.70.0000.00717.37
8.1.60.0040.00817.49
8.1.50.0040.00417.38
8.1.40.0030.00517.44
8.1.30.0040.00417.45
8.1.20.0070.00017.61
8.1.10.0050.00317.46
8.1.00.0080.00017.38
8.0.300.0040.00420.78
8.0.290.0040.00416.75
8.0.280.0070.00018.31
8.0.270.0000.00717.19
8.0.260.0060.00017.20
8.0.250.0000.00816.83
8.0.240.0030.00516.81
8.0.230.0030.00316.89
8.0.220.0030.00316.84
8.0.210.0000.00816.79
8.0.200.0000.00616.81
8.0.190.0000.00716.85
8.0.180.0030.00316.96
8.0.170.0080.00016.80
8.0.160.0000.00816.78
8.0.150.0000.00716.71
8.0.140.0000.00716.72
8.0.130.0030.00313.27
8.0.120.0080.00016.77
8.0.110.0000.00716.80
8.0.100.0000.00716.75
8.0.90.0050.00316.99
8.0.80.0100.01016.94
8.0.70.0040.00416.88
8.0.60.0070.00016.78
8.0.50.0000.00716.75
8.0.30.0120.01017.13
8.0.20.0160.00317.40
8.0.10.0040.00416.99
8.0.00.0150.00816.91
7.4.330.0000.00515.00
7.4.320.0080.00016.52
7.4.300.0000.00616.41
7.4.290.0070.00016.44
7.4.280.0040.00416.34
7.4.270.0000.00716.48
7.4.260.0050.00216.43
7.4.250.0000.00716.35
7.4.240.0040.00316.42
7.4.230.0030.00316.48
7.4.220.0120.00616.47
7.4.210.0160.00016.63
7.4.200.0030.00316.23
7.4.160.0140.00716.59
7.4.150.0060.01317.40
7.4.140.0080.00917.86
7.4.130.0160.00016.48
7.4.120.0090.00716.55
7.4.110.0100.00716.63
7.4.100.0060.01216.47
7.4.90.0070.01016.52
7.4.80.0070.01119.39
7.4.70.0030.01216.57
7.4.60.0110.00616.53
7.4.50.0030.00516.25
7.4.40.0150.00016.41
7.4.30.0090.00616.52
7.4.00.0050.01214.67
7.3.330.0020.00313.06
7.3.320.0030.00312.93
7.3.310.0000.00716.01
7.3.300.0000.00716.18
7.3.290.0200.00016.31
7.3.280.0110.00616.31
7.3.270.0100.00717.40
7.3.260.0100.01316.14
7.3.250.0050.01216.16
7.3.240.0080.01216.58
7.3.230.0150.00316.39
7.3.210.0030.01616.31
7.3.200.0070.01319.39
7.3.190.0120.00416.22
7.3.180.0030.01216.55
7.3.170.0060.00916.54
7.3.160.0060.01216.59
7.3.120.0080.00814.57
7.3.110.0130.00514.50
7.3.100.0070.00814.53
7.3.90.0040.00914.67
7.3.80.0050.01014.97
7.3.70.0030.00814.75
7.3.60.0020.01514.43
7.3.50.0050.00514.74
7.3.40.0020.01414.60
7.3.30.0080.00314.74
7.3.20.0030.00916.65
7.3.10.0040.00616.66
7.3.00.0050.00816.50
7.2.330.0040.01816.78
7.2.320.0140.00316.46
7.2.310.0090.00916.29
7.2.300.0060.01116.77
7.2.290.0030.01316.40
7.2.250.0120.00814.96
7.2.240.0080.00714.69
7.2.230.0100.00415.17
7.2.220.0070.00515.00
7.2.210.0030.01114.93
7.2.200.0040.01014.93
7.2.190.0030.00714.98
7.2.180.0060.00815.03
7.2.170.0090.00614.81
7.1.330.0040.00915.65
7.1.320.0020.01015.62
7.1.310.0050.00815.63
7.1.300.0030.01015.57
7.1.290.0100.00315.60
7.1.280.0060.01015.69
7.1.270.0060.00415.63
7.1.260.0100.00315.76
7.1.200.0070.00715.79
7.1.100.0060.00918.07
7.1.70.0000.01217.14
7.1.60.0090.01319.61
7.1.50.0030.02016.85
7.1.00.0000.08022.44
7.0.200.0200.00414.42
7.0.140.0030.07322.12
7.0.100.0100.03720.16
7.0.90.0070.06719.96
7.0.80.0000.04719.99
7.0.70.0100.06319.93
7.0.60.0100.07019.85
7.0.50.0070.04320.30
7.0.40.0070.03320.09
7.0.30.0100.04320.13
7.0.20.0030.05720.17
7.0.10.0070.07320.02
7.0.00.0170.07020.08
5.6.280.0100.06721.03
5.6.250.0000.04320.59
5.6.240.0070.05720.50
5.6.230.0000.05020.48
5.6.220.0000.05720.61
5.6.210.0070.03720.66
5.6.200.0070.04720.98
5.6.190.0000.04721.13
5.6.180.0030.04320.93
5.6.170.0070.05020.95
5.6.160.0030.04021.16
5.6.150.0070.04321.00
5.6.140.0130.08021.09
5.6.130.0100.04321.02
5.6.120.0130.05721.07
5.6.110.0000.05321.16
5.6.100.0130.08020.93
5.6.90.0070.07021.03
5.6.80.0130.06320.52
5.6.70.0030.07720.47
5.6.60.0100.07720.30
5.6.50.0100.07320.45
5.6.40.0070.08020.48
5.6.30.0100.06720.52
5.6.20.0070.08020.36
5.6.10.0030.06720.36
5.6.00.0130.07720.38
5.5.380.0030.04020.38
5.5.370.0030.04020.46
5.5.360.0100.04320.52
5.5.350.0030.04020.46
5.5.340.0100.04320.88
5.5.330.0030.04320.82
5.5.320.0030.08320.86
5.5.310.0100.08320.86
5.5.300.0070.06720.86
5.5.290.0100.06720.88
5.5.280.0100.03720.78
5.5.270.0030.07320.87
5.5.260.0070.04020.89
5.5.250.0030.04020.44
5.5.240.0070.03320.30
5.5.230.0130.06720.26
5.5.220.0170.06719.97
5.5.210.0070.07320.17
5.5.200.0100.06720.27
5.5.190.0070.04320.27
5.5.180.0030.08020.14
5.5.160.0100.03720.11
5.5.150.0130.04020.09
5.5.140.0070.04720.17
5.5.130.0000.07720.23
5.5.120.0070.05320.21
5.5.110.0070.07320.07
5.5.100.0130.06020.09
5.5.90.0030.06020.14
5.5.80.0100.05720.05
5.5.70.0030.07019.93
5.5.60.0200.06019.95
5.5.50.0130.07320.16
5.5.40.0200.05320.04
5.5.30.0000.08020.07
5.5.20.0130.06720.06
5.5.10.0030.05320.00
5.5.00.0100.04319.99
5.4.450.0000.04319.42
5.4.440.0070.08319.37
5.4.430.0070.05019.29
5.4.420.0030.07319.55
5.4.410.0030.07719.22
5.4.400.0070.06019.05
5.4.390.0030.04019.25
5.4.380.0030.08318.90
5.4.370.0030.07018.90
5.4.360.0130.04319.06
5.4.350.0130.06718.78
5.4.340.0070.04319.13
5.4.320.0070.07719.06
5.4.310.0030.07719.05
5.4.300.0100.05019.04
5.4.290.0170.05719.05
5.4.280.0070.07719.05
5.4.270.0100.07319.12
5.4.260.0100.06319.14
5.4.250.0030.05718.78
5.4.240.0170.06019.14
5.4.230.0070.05318.80
5.4.220.0200.06018.93
5.4.210.0000.07319.13
5.4.200.0030.06718.97
5.4.190.0070.07718.95
5.4.180.0100.07318.95
5.4.170.0130.05718.89
5.4.160.0100.05319.00
5.4.150.0100.04319.09
5.4.140.0030.08316.27
5.4.130.0100.06316.28
5.4.120.0030.07316.26
5.4.110.0100.06316.42
5.4.100.0030.07316.27
5.4.90.0000.04016.23
5.4.80.0170.06016.25
5.4.70.0000.05016.20
5.4.60.0070.05316.29
5.4.50.0030.06316.20
5.4.40.0200.06016.28
5.4.30.0070.08016.28
5.4.20.0000.05016.23
5.4.10.0100.05716.19
5.4.00.0070.06715.79
5.3.290.0070.06714.62
5.3.280.0030.07014.56
5.3.270.0100.07014.56
5.3.260.0070.06314.59
5.3.250.0030.04314.55
5.3.240.0070.07014.59
5.3.230.0030.07714.55
5.3.220.0000.08314.55
5.3.210.0030.04014.55
5.3.200.0000.08014.52
5.3.190.0000.04314.50
5.3.180.0070.06314.46
5.3.170.0030.04014.41
5.3.160.0100.07014.51
5.3.150.0070.07014.52
5.3.140.0070.04014.51
5.3.130.0030.08014.40
5.3.120.0030.05714.53
5.3.110.0030.07714.52
5.3.100.0070.07314.04
5.3.90.0130.05014.01
5.3.80.0030.07013.80
5.3.70.0030.04313.77
5.3.60.0030.04013.98
5.3.50.0070.05713.89
5.3.40.0130.07013.94
5.3.30.0070.07313.89
5.3.20.0030.06013.46
5.3.10.0100.05013.56
5.3.00.0000.08013.62
5.2.170.0000.03712.69
5.2.160.0100.04712.69
5.2.150.0070.06012.69
5.2.140.0000.06312.69
5.2.130.0070.05712.69
5.2.120.0070.04012.69
5.2.110.0100.05712.69
5.2.100.0030.05312.69
5.2.90.0070.05712.69
5.2.80.0030.03712.69
5.2.70.0100.02712.69
5.2.60.0100.05712.69
5.2.50.0100.04312.69
5.2.40.0030.06012.69
5.2.30.0070.03012.69
5.2.20.0070.05712.69
5.2.10.0070.04312.69
5.2.00.0070.05012.69
5.1.60.0070.02712.69
5.1.50.0030.03012.69
5.1.40.0100.03312.69
5.1.30.0030.05712.69
5.1.20.0030.03012.69
5.1.10.0000.03312.69
5.1.00.0070.05012.69
5.0.50.0030.04012.69
5.0.40.0030.04312.69
5.0.30.0000.07312.69
5.0.20.0070.04312.69
5.0.10.0000.02312.69
5.0.00.0070.04312.69
4.4.90.0070.02712.69
4.4.80.0030.03312.69
4.4.70.0000.01712.69
4.4.60.0030.03712.69
4.4.50.0000.01712.69
4.4.40.0070.02312.69
4.4.30.0030.02312.69
4.4.20.0070.03012.69
4.4.10.0000.02012.69
4.4.00.0100.01712.69
4.3.110.0000.01712.69
4.3.100.0070.01312.69
4.3.90.0000.02012.69
4.3.80.0000.04012.69
4.3.70.0030.03012.69
4.3.60.0070.02312.69
4.3.50.0000.03712.69
4.3.40.0030.03712.69
4.3.30.0070.02712.69
4.3.20.0030.03312.69
4.3.10.0000.03312.69
4.3.00.0000.02012.69

preferences:
44.69 ms | 400 KiB | 5 Q