3v4l.org

run code in 300+ PHP versions simultaneously
<?php function directly($array) { $key = 'foo'; return isset($array[$key]); } function byreference(&$array) { $key = 'foo'; return isset($array[$key]); } $array = array( 'foo' => NULL, ); echo directly($array) ? 'truthy' : 'falsey'; echo "\n"; echo byreference($array) ? 'truthy' : 'falsey';

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)
8.3.60.0150.00616.75
8.3.50.0120.00421.17
8.3.40.0170.00318.55
8.3.30.0090.00619.04
8.3.20.0080.00020.21
8.3.10.0040.00423.31
8.3.00.0030.00620.84
8.2.180.0040.01216.38
8.2.170.0090.00622.96
8.2.160.0140.00020.52
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0050.00326.16
8.2.120.0080.00019.18
8.2.110.0080.00022.11
8.2.100.0040.00819.66
8.2.90.0000.00819.30
8.2.80.0000.00817.97
8.2.70.0030.00617.50
8.2.60.0000.00819.65
8.2.50.0000.00918.07
8.2.40.0090.00019.94
8.2.30.0040.00418.20
8.2.20.0040.00417.70
8.2.10.0070.00017.89
8.2.00.0040.00417.55
8.1.280.0070.00725.92
8.1.270.0050.00322.05
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0080.00023.95
8.1.230.0090.00319.11
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0040.00417.22
8.1.190.0090.00017.23
8.1.180.0060.00318.10
8.1.170.0030.00618.53
8.1.160.0040.00421.96
8.1.150.0040.00418.60
8.1.140.0040.00417.46
8.1.130.0000.00717.88
8.1.120.0030.00517.48
8.1.110.0080.00017.34
8.1.100.0020.00517.30
8.1.90.0080.00017.44
8.1.80.0040.00417.34
8.1.70.0050.00317.27
8.1.60.0100.00017.58
8.1.50.0040.00417.46
8.1.40.0000.00717.59
8.1.30.0000.00817.73
8.1.20.0040.00417.61
8.1.10.0040.00417.52
8.1.00.0000.00817.54
8.0.300.0040.00418.77
8.0.290.0040.00417.04
8.0.280.0040.00418.36
8.0.270.0030.00317.19
8.0.260.0070.00017.30
8.0.250.0000.00716.97
8.0.240.0060.00316.83
8.0.230.0000.00716.75
8.0.220.0040.00316.85
8.0.210.0060.00016.73
8.0.200.0030.00316.78
8.0.190.0040.00416.97
8.0.180.0040.00416.89
8.0.170.0030.00516.89
8.0.160.0000.00816.71
8.0.150.0040.00416.75
8.0.140.0070.00016.74
8.0.130.0000.00613.25
8.0.120.0050.00316.79
8.0.110.0040.00416.73
8.0.100.0030.00616.87
8.0.90.0000.00716.85
8.0.80.0120.00316.83
8.0.70.0080.00016.82
8.0.60.0050.00216.71
8.0.50.0040.00416.67
8.0.30.0140.00817.08
8.0.20.0110.00917.43
8.0.10.0040.00416.95
8.0.00.0100.00816.79
7.4.330.0050.00015.00
7.4.320.0000.00616.38
7.4.300.0060.00016.66
7.4.290.0000.00816.63
7.4.280.0000.00716.57
7.4.270.0040.00416.54
7.4.260.0030.00316.36
7.4.250.0030.00316.48
7.4.240.0070.00016.59
7.4.230.0050.00216.62
7.4.220.0110.00716.51
7.4.210.0070.00916.49
7.4.200.0030.00316.65
7.4.190.0000.00716.75
7.4.160.0080.00816.52
7.4.150.0060.01217.40
7.4.140.0130.01017.86
7.4.130.0070.01016.57
7.4.120.0100.00716.57
7.4.110.0090.01216.32
7.4.100.0070.01216.46
7.4.90.0110.00716.59
7.4.80.0080.01219.39
7.4.70.0070.00716.69
7.4.60.0070.01116.49
7.4.50.0030.00616.49
7.4.40.0070.01016.61
7.4.30.0100.00516.36
7.4.00.0060.00914.90
7.3.330.0030.00313.16
7.3.320.0030.00313.23
7.3.310.0030.00316.26
7.3.300.0040.00416.30
7.3.290.0110.00816.24
7.3.280.0100.00516.29
7.3.270.0150.00417.40
7.3.260.0060.01216.34
7.3.250.0070.01016.27
7.3.240.0110.00816.50
7.3.230.0080.00816.57
7.3.210.0030.01316.50
7.3.200.0100.00719.39
7.3.190.0030.01416.09
7.3.180.0100.00616.23
7.3.170.0070.01416.27
7.3.160.0030.01316.29
7.3.120.0070.00714.66
7.2.330.0100.01016.62
7.2.320.0120.00616.51
7.2.310.0030.01316.60
7.2.300.0160.00716.45
7.2.290.0100.00716.72
7.1.70.0000.00816.96
7.1.60.0100.01619.46
7.1.50.0040.01116.84
7.1.00.0030.07722.43
7.0.200.0040.00416.40
7.0.140.0030.07321.95
7.0.60.0030.08719.87
7.0.50.0070.04017.88
7.0.40.0030.05320.35
7.0.30.0730.05020.25
7.0.20.0300.06720.12
7.0.10.0130.07020.09
7.0.00.0070.07720.25
5.6.280.0000.07720.78
5.6.210.0030.06020.71
5.6.200.0000.04318.15
5.6.190.0100.05020.52
5.6.180.3830.04320.77
5.6.170.0330.06320.62
5.6.160.0070.09720.55
5.6.150.0070.03318.22
5.6.140.0070.04318.28
5.6.130.0130.07718.14
5.6.120.0070.05321.10
5.6.110.0000.04321.12
5.6.100.0030.07021.01
5.6.90.0100.08020.95
5.6.80.0030.07320.44
5.5.350.0270.06320.46
5.5.340.0000.05717.94
5.5.330.0070.08320.35
5.5.320.0170.05720.38
5.5.310.0500.06320.38
5.5.300.0070.04717.98
5.5.290.0070.07017.95
5.5.280.0030.09320.69
5.5.270.0030.05320.87
5.5.260.0070.08720.93
5.5.250.0030.07320.58
5.5.240.4200.04320.26
5.4.450.0630.05719.50
5.4.440.0430.07319.71
5.4.430.0270.05319.21
5.4.420.0200.06019.61
5.4.410.0330.04319.36
5.4.400.0230.05319.31
5.4.390.0300.05319.30
5.4.380.0070.06018.51
5.4.370.0200.04718.63
5.4.360.0270.04018.50
5.4.350.0170.05018.80
5.4.340.0100.05718.78
5.4.320.0060.03612.50
5.4.310.0070.03812.50
5.4.300.0050.03712.50
5.4.290.0100.04412.50
5.4.280.0100.03712.40
5.4.270.0100.09612.40
5.4.260.0100.03812.40
5.4.250.0110.05012.40
5.4.240.0090.04712.40
5.4.230.0060.04812.39
5.4.220.0100.04512.39
5.4.210.0070.04112.39
5.4.200.0100.05912.39
5.4.190.0100.03712.38
5.4.180.0130.04212.39
5.4.170.0010.04412.39
5.4.160.0060.03712.39
5.4.150.0070.03812.39
5.4.140.0070.04612.07
5.4.130.0060.04412.05
5.4.120.0040.04112.02
5.4.110.0090.03612.01
5.4.100.0070.04012.01
5.4.90.0060.03812.01
5.4.80.0140.04812.02
5.4.70.0060.04012.00
5.4.60.0120.03812.01
5.4.50.0020.04112.00
5.4.40.0110.04912.00
5.4.30.0070.03911.98
5.4.20.0170.03012.00
5.4.10.0070.04011.99
5.4.00.0060.03711.48
5.3.290.0090.05012.80
5.3.280.0150.03812.71
5.3.270.0110.04712.73
5.3.260.0100.06012.72
5.3.250.0080.04312.72
5.3.240.0120.05312.71
5.3.230.0090.05012.71
5.3.220.0100.05012.68
5.3.210.0070.06512.68
5.3.200.0090.06512.68
5.3.190.0100.04512.68
5.3.180.0100.03712.67
5.3.170.0060.03912.66
5.3.160.0120.08712.67
5.3.150.0120.04312.67
5.3.140.0060.03812.66
5.3.130.0100.05412.65
5.3.120.0080.04912.66
5.3.110.0170.05612.65
5.3.100.0090.04612.13
5.3.90.0080.04512.11
5.3.80.0140.04812.10
5.3.70.0070.04212.10
5.3.60.0080.03912.09
5.3.50.0050.03712.03
5.3.40.0120.03412.03
5.3.30.0110.03211.98
5.3.20.0110.04911.77
5.3.10.0070.05211.73
5.3.00.0090.05311.72
5.2.170.0060.0359.22
5.2.160.0030.0339.22
5.2.150.0030.0359.22
5.2.140.0040.0329.22
5.2.130.0050.0299.18
5.2.120.0060.0349.18
5.2.110.0060.0349.19
5.2.100.0040.0379.18
5.2.90.0070.0269.18
5.2.80.0040.0309.18
5.2.70.0030.0319.18
5.2.60.0050.0309.13
5.2.50.0040.0309.10
5.2.40.0030.0309.08
5.2.30.0040.0319.05
5.2.20.0060.0299.04
5.2.10.0060.0278.95
5.2.00.0040.0308.80
5.1.60.0020.0278.09
5.1.50.0050.0248.09
5.1.40.0040.0278.07
5.1.30.0060.0268.42
5.1.20.0040.0328.44
5.1.10.0020.0338.16
5.1.00.0030.0308.16
5.0.50.0040.0216.64
5.0.40.0030.0206.50
5.0.30.0040.0326.32
5.0.20.0020.0206.29
5.0.10.0000.0246.26
5.0.00.0020.0326.25
4.4.90.0030.0154.78
4.4.80.0030.0154.75
4.4.70.0000.0184.75
4.4.60.0010.0174.75
4.4.50.0060.0164.77
4.4.40.0020.0284.71
4.4.30.0010.0174.76
4.4.20.0030.0164.85
4.4.10.0040.0274.85
4.4.00.0040.0274.76
4.3.110.0060.0204.67
4.3.100.0050.0134.66
4.3.90.0030.0154.63
4.3.80.0030.0264.59
4.3.70.0030.0164.63
4.3.60.0050.0144.62
4.3.50.0040.0154.63
4.3.40.0050.0224.53
4.3.30.0040.0143.30
4.3.20.0030.0153.28
4.3.10.0010.0173.25
4.3.00.0130.0307.27

preferences:
38.99 ms | 401 KiB | 5 Q