3v4l.org

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

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)
8.3.40.0140.00718.80
8.3.30.0030.01418.56
8.3.20.0080.00018.69
8.3.10.0050.00321.04
8.3.00.0070.00021.81
8.2.170.0060.01022.96
8.2.160.0070.00720.39
8.2.150.0090.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0080.00021.18
8.2.110.0040.00420.39
8.2.100.0080.00417.78
8.2.90.0070.00019.23
8.2.80.0000.00717.97
8.2.70.0040.00417.75
8.2.60.0100.00017.92
8.2.50.0050.00318.07
8.2.40.0000.00818.28
8.2.30.0000.00819.83
8.2.20.0030.00617.64
8.2.10.0050.00217.87
8.2.00.0060.00317.67
8.1.270.0070.00023.99
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0060.00322.46
8.1.230.0040.00721.02
8.1.220.0040.00418.77
8.1.210.0070.00018.89
8.1.200.0030.00617.23
8.1.190.0070.00017.41
8.1.180.0060.00318.10
8.1.170.0050.00318.61
8.1.160.0030.00518.83
8.1.150.0000.00718.63
8.1.140.0000.00817.41
8.1.130.0050.00317.69
8.1.120.0030.00317.46
8.1.110.0080.00017.38
8.1.100.0070.00017.45
8.1.90.0040.00417.39
8.1.80.0050.00217.37
8.1.70.0070.00017.41
8.1.60.0040.00417.57
8.1.50.0040.00417.52
8.1.40.0080.00017.39
8.1.30.0000.00717.53
8.1.20.0040.00417.65
8.1.10.0030.00617.50
8.1.00.0060.00317.50
8.0.300.0050.00319.90
8.0.290.0060.00317.18
8.0.280.0070.00018.21
8.0.270.0030.00317.12
8.0.260.0000.00716.80
8.0.250.0050.00216.92
8.0.240.0030.00616.83
8.0.230.0030.00316.95
8.0.220.0030.00316.87
8.0.210.0030.00316.77
8.0.200.0000.00617.00
8.0.190.0000.00717.03
8.0.180.0030.00516.88
8.0.170.0080.00016.91
8.0.160.0030.00317.04
8.0.150.0100.00017.01
8.0.140.0070.00016.83
8.0.130.0030.00313.33
8.0.120.0000.00816.83
8.0.110.0030.00516.96
8.0.100.0000.00816.89
8.0.90.0040.00416.94
8.0.80.0130.01016.96
8.0.70.0070.00016.91
8.0.60.0050.00316.78
8.0.50.0000.00716.89
8.0.30.0100.00917.28
8.0.20.0110.00817.40
8.0.10.0000.00717.18
8.0.00.0130.00516.86
7.4.330.0030.00314.84
7.4.320.0030.00316.60
7.4.300.0030.00316.57
7.4.290.0030.00316.53
7.4.280.0030.00416.49
7.4.270.0030.00316.53
7.4.260.0000.00513.31
7.4.250.0040.00416.59
7.4.240.0050.00216.58
7.4.230.0070.00016.60
7.4.220.0100.01416.56
7.4.210.0100.00516.48
7.4.200.0000.00716.43
7.4.190.0030.00316.47
7.4.160.0090.00616.64
7.4.150.0110.00817.40
7.4.140.0090.01117.86
7.4.130.0070.01016.45
7.4.120.0130.00916.59
7.4.110.0080.00916.49
7.4.100.0110.00916.40
7.4.90.0080.00816.64
7.4.80.0100.00719.37
7.4.70.0070.01016.37
7.4.60.0140.00316.61
7.4.50.0030.00516.57
7.4.40.0060.00922.27
7.4.30.0070.01016.50
7.4.00.0080.00315.18
7.3.330.0060.00013.29
7.3.320.0020.00213.27
7.3.310.0030.00316.43
7.3.300.0040.00416.24
7.3.290.0120.00616.29
7.3.280.0110.00716.28
7.3.270.0090.01017.40
7.3.260.0140.00818.24
7.3.250.0130.00616.40
7.3.240.0070.01016.20
7.3.230.0030.01816.39
7.3.210.0150.00716.34
7.3.200.0140.00319.39
7.3.190.0040.01116.27
7.3.180.0080.00816.31
7.3.170.0030.01316.50
7.3.160.0100.01016.39
7.3.120.0070.01014.86
7.2.330.0110.00616.52
7.2.320.0080.01516.40
7.2.310.0170.00016.46
7.2.300.0050.01716.43
7.2.290.0170.00716.46
7.2.80.0060.00616.73
7.2.60.0080.00816.66
7.2.00.0030.01219.50
7.1.200.0030.00915.65
7.1.100.0000.01417.95
7.1.70.0040.00416.96
7.1.60.0090.01219.40
7.1.50.0150.00816.93
7.1.00.0000.07722.36
7.0.200.0050.00516.49
7.0.140.0030.07322.05
7.0.60.0000.08321.70
7.0.50.0030.08322.05
7.0.40.0000.08720.12
7.0.30.0030.08320.19
7.0.20.0030.09020.19
7.0.10.0030.10320.18
7.0.00.0130.07720.02
5.6.280.0000.07321.11
5.6.210.0030.08020.70
5.6.200.0130.07320.99
5.6.190.0030.07020.99
5.6.180.0130.07321.12
5.6.170.0000.07721.04
5.6.160.0070.07020.98
5.6.150.0100.07320.96
5.6.140.0070.07720.98
5.6.130.0130.07321.00
5.6.120.0100.08020.96
5.6.110.0030.07020.97
5.6.100.0100.07721.07
5.6.90.0000.08720.87
5.6.80.0070.07320.38
5.6.70.0030.07320.38
5.6.60.0000.06020.38
5.6.50.0070.07320.38
5.6.40.0100.07020.50
5.6.30.0030.08720.34
5.6.20.0070.07320.55
5.6.10.0100.07320.36
5.6.00.0030.07320.24
5.5.350.0070.08320.39
5.5.340.0070.08320.87
5.5.330.0030.08320.89
5.5.320.0070.08020.61
5.5.310.0070.07720.87
5.5.300.0100.07320.87
5.5.290.0100.07020.71
5.5.280.0000.08720.79
5.5.270.0030.06020.88
5.5.260.0130.07720.75
5.5.250.0200.07020.69
5.5.240.0030.08020.11
5.5.230.0030.07020.14
5.5.220.0030.05020.24
5.5.210.0000.07720.25
5.5.200.0170.06320.25
5.5.190.0030.08320.17
5.5.180.0100.07720.21
5.5.160.0000.07720.22
5.5.150.0030.08320.20
5.5.140.0000.08320.14
5.5.130.0030.06320.21
5.5.120.0030.07720.07
5.5.110.0030.08020.14
5.5.100.0100.07020.13
5.5.90.0100.07020.17
5.5.80.0030.08020.07
5.5.70.0070.07719.96
5.5.60.0070.07719.99
5.5.50.0130.06720.09
5.5.40.0000.07319.99
5.5.30.0070.07720.16
5.5.20.0070.07320.09
5.5.10.0070.07319.98
5.5.00.0070.07320.13
5.4.450.0000.09019.17
5.4.440.0030.07719.43
5.4.430.0100.07319.17
5.4.420.0130.07319.39
5.4.410.0000.07019.20
5.4.400.0100.06319.16
5.4.390.0170.06018.97
5.4.380.0070.05719.04
5.4.370.0070.07019.20
5.4.360.0100.04318.99
5.4.350.0070.07719.00
5.4.340.0070.07019.00
5.4.320.0070.06319.02
5.4.310.0070.07319.22
5.4.300.0070.07018.95
5.4.290.0070.07319.00
5.4.280.0070.05719.21
5.4.270.0030.07319.05
5.4.260.0070.07019.07
5.4.250.0000.06718.84
5.4.240.0070.07018.84
5.4.230.0070.07019.16
5.4.220.0030.06318.98
5.4.210.0030.07719.18
5.4.200.0070.07319.00
5.4.190.0070.07318.90
5.4.180.0100.06318.86
5.4.170.0030.08018.99
5.4.160.0070.07318.82
5.4.150.0000.08319.17
5.4.140.0030.07316.33
5.4.130.0000.07016.37
5.4.120.0070.06716.36
5.4.110.0100.06716.30
5.4.100.0100.06016.35
5.4.90.0130.06316.25
5.4.80.0030.06716.46
5.4.70.0070.06316.39
5.4.60.0100.06316.45
5.4.50.0070.07016.22
5.4.40.0100.06316.32
5.4.30.0070.06316.22
5.4.20.0070.07016.24
5.4.10.0030.06316.41
5.4.00.0030.07315.51
5.3.290.0070.07314.46
5.3.280.0000.05314.53
5.3.270.0000.05714.57
5.3.260.0000.08314.53
5.3.250.0030.07314.53
5.3.240.0000.06714.57
5.3.230.0030.08314.44
5.3.220.0000.08014.47
5.3.210.0030.07714.55
5.3.200.0070.07714.50
5.3.190.0030.07714.41
5.3.180.0170.06014.51
5.3.170.0000.07714.51
5.3.160.0030.07314.55
5.3.150.0000.07314.55
5.3.140.0030.07314.49
5.3.130.0030.07014.52
5.3.120.0070.07314.46
5.3.110.0000.07314.38
5.3.100.0000.07714.02
5.3.90.0000.07313.92
5.3.80.0030.07313.95
5.3.70.0000.07713.98
5.3.60.0030.06713.77
5.3.50.0000.07713.86
5.3.40.0030.06013.88
5.3.30.0000.07313.86
5.3.20.0000.07313.66
5.3.10.0030.07013.58
5.3.00.0030.06313.61
5.2.170.0030.06012.47
5.2.160.0030.05712.47
5.2.150.0030.06012.47
5.2.140.0030.06312.47
5.2.130.0000.06012.47
5.2.120.0030.06012.47
5.2.110.0030.06012.47
5.2.100.0000.06012.47
5.2.90.0000.06012.47
5.2.80.0100.04012.47
5.2.70.0030.06012.47
5.2.60.0030.06312.47
5.2.50.0030.06012.47
5.2.40.0030.06312.47
5.2.30.0100.05712.47
5.2.20.0070.05712.47
5.2.10.0030.04712.47
5.2.00.0070.05312.47
5.1.60.0000.05012.47
5.1.50.0000.05712.47
5.1.40.0030.05712.47
5.1.30.0030.05012.47
5.1.20.0000.06312.48
5.1.10.0070.05012.49
5.1.00.0030.05312.50
5.0.50.0000.04712.50
5.0.40.0000.05012.50
5.0.30.0000.06712.50
5.0.20.0070.03712.52
5.0.10.0030.04012.57
5.0.00.0000.06712.57
4.4.90.0000.04012.47
4.4.80.0000.03012.47
4.4.70.0030.03312.47
4.4.60.0000.03312.47
4.4.50.0030.03012.47
4.4.40.0000.05012.47
4.4.30.0030.03312.47
4.4.20.0030.03712.48
4.4.10.0030.03312.50
4.4.00.0000.05312.50
4.3.110.0030.03012.50
4.3.100.0030.03312.51
4.3.90.0070.03012.57
4.3.80.0000.05312.57
4.3.70.0000.02312.57
4.3.60.0000.03312.57
4.3.50.0030.03012.57
4.3.40.0000.05312.57
4.3.30.0030.03312.57
4.3.20.0000.03712.57
4.3.10.0000.03712.57
4.3.00.0000.03312.57

preferences:
44.25 ms | 400 KiB | 5 Q