3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = []; $key = 'foo'; $val = $arr[$key] ?? null; unset($arr[$key]); echo $val;

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)
8.3.60.0120.00916.63
8.3.50.0200.01421.00
8.3.40.0120.00318.49
8.3.30.0210.00018.59
8.3.20.0100.00720.35
8.3.10.0120.00623.53
8.3.00.0100.00017.66
8.2.180.0040.01118.29
8.2.170.0120.00322.96
8.2.160.0100.00320.35
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0040.00417.75
8.2.110.0060.00322.27
8.2.100.0000.01217.75
8.2.90.0040.00419.17
8.2.80.0000.00917.97
8.2.70.0050.00317.38
8.2.60.0030.00518.04
8.2.50.0040.00418.07
8.2.40.0000.00819.34
8.2.30.0060.00318.13
8.2.20.0040.00417.68
8.2.10.0000.00718.12
8.2.00.0040.00418.12
8.1.280.0060.00825.92
8.1.270.0060.00322.16
8.1.260.0090.00926.35
8.1.250.0110.00728.09
8.1.240.0030.00622.02
8.1.230.0060.00617.64
8.1.220.0000.00817.76
8.1.210.0000.00818.77
8.1.200.0040.00417.23
8.1.190.0030.00517.23
8.1.180.0080.00018.10
8.1.170.0060.00318.53
8.1.160.0070.00022.05
8.1.150.0000.00818.73
8.1.140.0040.00417.47
8.1.130.0000.00717.49
8.1.120.0080.00017.39
8.1.110.0040.00417.34
8.1.100.0000.00717.38
8.1.90.0040.00417.39
8.1.80.0070.00017.29
8.1.70.0030.00317.43
8.1.60.0080.00017.56
8.1.50.0000.00817.41
8.1.40.0060.00317.53
8.1.30.0030.00517.70
8.1.20.0040.00417.68
8.1.10.0060.00317.56
8.1.00.0080.00017.40
8.0.300.0040.00418.77
8.0.290.0050.00316.73
8.0.280.0040.00418.35
8.0.270.0050.00317.21
8.0.260.0060.00017.16
8.0.250.0040.00416.96
8.0.240.0050.00316.93
8.0.230.0070.00016.89
8.0.220.0030.00316.82
8.0.210.0070.00016.87
8.0.200.0000.00716.92
8.0.190.0000.00716.77
8.0.180.0070.00016.80
8.0.170.0070.00016.78
8.0.160.0070.00016.91
8.0.150.0000.00716.77
8.0.140.0030.00316.84
8.0.130.0000.00513.16
8.0.120.0030.00516.78
8.0.110.0020.00516.82
8.0.100.0040.00416.72
8.0.90.0040.00416.89
8.0.80.0070.00716.74
8.0.70.0000.00716.87
8.0.60.0040.00416.70
8.0.50.0000.00716.84
8.0.30.0140.00516.96
8.0.20.0100.00917.40
8.0.10.0040.00416.89
8.0.00.0090.01016.89
7.4.330.0020.00215.20
7.4.320.0000.00616.49
7.4.300.0050.00216.50
7.4.290.0020.00516.53
7.4.280.0000.00816.39
7.4.270.0000.00816.52
7.4.260.0000.00716.60
7.4.250.0030.00516.39
7.4.240.0020.00516.55
7.4.230.0000.00716.70
7.4.220.0100.00716.49
7.4.210.0020.01516.65
7.4.200.0070.00016.62
7.4.160.0040.01116.39
7.4.150.0140.00617.40
7.4.140.0090.01217.86
7.4.130.0060.01216.42
7.4.120.0090.01116.40
7.4.110.0130.00616.49
7.4.100.0030.01716.23
7.4.90.0070.01016.59
7.4.80.0100.00719.39
7.4.70.0100.00616.49
7.4.60.0160.00716.39
7.4.50.0000.00716.34
7.4.40.0030.01316.56
7.4.30.0160.00616.48
7.4.00.0030.01014.84
7.3.330.0060.00013.12
7.3.320.0020.00313.03
7.3.310.0050.00316.33
7.3.300.0000.00716.25
7.3.290.0000.00716.25
7.3.280.0020.00816.26
7.3.270.0180.00717.40
7.3.260.0130.00316.46
7.3.240.0040.01816.21
7.3.230.0090.00616.45
7.3.210.0140.00316.31
7.3.200.0090.00816.29
7.3.190.0120.00316.62
7.3.180.0090.00616.36
7.3.170.0110.00416.47
7.3.160.0090.01216.50
7.3.10.0070.00416.38
7.3.00.0040.01116.31
7.2.330.0040.01316.37
7.2.320.0140.00816.80
7.2.310.0060.00916.52
7.2.300.0100.01016.57
7.2.290.0110.01116.28
7.2.130.0060.00916.63
7.2.120.0070.00616.79
7.2.110.0070.00716.67
7.2.100.0040.00416.74
7.2.90.0000.01416.90
7.2.80.0070.00716.71
7.2.70.0030.00816.75
7.2.60.0080.00516.61
7.2.50.0060.00816.77
7.2.40.0040.00716.83
7.2.30.0030.01116.79
7.2.20.0030.00616.88
7.2.10.0000.01016.75
7.2.00.0050.00918.00
7.1.250.0000.00815.36
7.1.200.0060.00615.94
7.1.100.0030.01018.00
7.1.70.0040.00416.73
7.1.60.0100.01619.27
7.1.50.0000.02216.96
7.1.00.0030.07722.40
7.0.200.0210.00414.76
7.0.60.0030.09020.00
7.0.50.0100.07317.89
7.0.40.0070.10720.35
7.0.30.0500.06020.01
7.0.20.0230.03720.04
7.0.10.0230.04320.32
7.0.00.0100.05320.18
5.6.280.0000.05721.02
5.6.210.0070.08020.62
5.6.200.0030.04018.16
5.6.190.0130.08020.37
5.6.180.0200.06020.50
5.6.170.0330.06020.55
5.6.160.0000.04320.54
5.6.150.0070.07318.28
5.6.140.0100.04718.15
5.6.130.0100.07018.24
5.6.120.0070.06321.13
5.6.110.0170.06020.93
5.6.100.0130.06020.95
5.6.90.0030.09320.96
5.6.80.0170.07320.43
5.6.70.4570.03320.36
5.5.350.0130.07320.42
5.5.340.0070.07018.05
5.5.330.0100.07020.20
5.5.320.0300.04320.51
5.5.310.0270.03720.32
5.5.300.0030.04717.95
5.5.290.0000.04717.97
5.5.280.0030.08720.96
5.5.270.0030.06320.89
5.5.260.0100.07720.86
5.5.250.0200.06020.77
5.5.240.0100.07020.03
5.4.450.0570.05719.61
5.4.440.0700.06319.57
5.4.430.0670.06019.33
5.4.420.0770.04719.57
5.4.410.0770.05319.03
5.4.400.0830.04719.13
5.4.390.0870.04718.83
5.4.380.0800.08018.84
5.4.370.0630.05319.12
5.4.360.0700.05319.25
5.4.350.0800.05718.94
5.4.340.0570.06319.23
5.4.320.0730.06019.25
5.4.310.0700.05319.12
5.4.300.0670.06719.36
5.4.290.0730.07319.22
5.4.280.0570.06719.25
5.4.270.0830.05719.30
5.4.260.0670.06319.24
5.4.250.0900.06319.10
5.4.240.0770.05019.23
5.4.230.0800.06018.83
5.4.220.0930.07319.24
5.4.210.0870.06019.24
5.4.200.0700.06318.96
5.4.190.0730.06019.24
5.4.180.0730.07719.24
5.4.170.1170.05018.94
5.4.160.0870.05719.25
5.4.150.0930.06019.13
5.4.140.0830.05716.73
5.4.130.0730.04716.43
5.4.120.0800.05016.73
5.4.110.0770.05316.62
5.4.100.0970.06716.21
5.4.90.0830.04316.43
5.4.80.1000.05016.40
5.4.70.0270.06716.55
5.4.60.0300.02716.49
5.4.50.0000.06316.43
5.4.40.0100.03716.56
5.4.30.0030.07016.37
5.4.20.0200.03716.32

preferences:
77.61 ms | 401 KiB | 5 Q