3v4l.org

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

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)
8.3.60.0140.00716.38
8.3.50.0170.00921.01
8.3.40.0150.00618.84
8.3.30.0090.00618.59
8.3.20.0070.00020.20
8.3.10.0140.00423.54
8.3.00.0090.00017.92
8.2.180.0150.00318.16
8.2.170.0110.01122.96
8.2.160.0170.00320.52
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0070.00726.16
8.2.120.0070.00317.63
8.2.110.0110.01120.38
8.2.100.0060.00617.91
8.2.90.0030.00519.37
8.2.80.0050.00319.16
8.2.70.0030.00618.05
8.2.60.0040.00417.90
8.2.50.0000.00818.10
8.2.40.0040.00420.55
8.2.30.0090.00218.15
8.2.20.0050.00217.73
8.2.10.0040.00418.00
8.2.00.0070.00018.11
8.1.280.0150.00325.92
8.1.270.0140.00321.89
8.1.260.0070.01026.35
8.1.250.0070.01028.09
8.1.240.0150.00622.19
8.1.230.0110.00020.38
8.1.220.0000.00817.79
8.1.210.0040.00418.77
8.1.200.0030.00617.10
8.1.190.0000.01217.13
8.1.180.0060.00318.10
8.1.170.0030.00518.43
8.1.160.0040.00421.84
8.1.150.0000.00718.68
8.1.140.0030.00617.45
8.1.130.0030.00317.67
8.1.120.0070.00017.36
8.1.110.0040.00417.43
8.1.100.0000.00717.38
8.1.90.0030.00317.38
8.1.80.0040.00417.28
8.1.70.0030.00317.23
8.1.60.0040.00417.59
8.1.50.0040.00417.55
8.1.40.0040.00417.55
8.1.30.0040.00417.59
8.1.20.0040.00417.66
8.1.10.0020.00517.59
8.1.00.0000.00917.46
8.0.300.0080.00019.59
8.0.290.0060.00316.88
8.0.280.0000.00718.42
8.0.270.0050.00317.15
8.0.260.0000.00617.16
8.0.250.0040.00416.84
8.0.240.0040.00416.95
8.0.230.0040.00416.84
8.0.220.0030.00316.84
8.0.210.0000.00816.82
8.0.200.0050.00216.89
8.0.190.0030.00316.90
8.0.180.0000.00716.86
8.0.170.0040.00416.66
8.0.160.0030.00516.85
8.0.150.0070.00016.89
8.0.140.0000.00716.78
8.0.130.0030.00313.23
8.0.120.0040.00416.81
8.0.110.0000.00716.78
8.0.100.0070.00016.64
8.0.90.0000.00716.77
8.0.80.0070.01416.88
8.0.70.0070.00016.86
8.0.60.0000.00716.78
8.0.50.0070.00016.80
8.0.30.0140.00516.99
8.0.20.0100.00917.40
8.0.10.0040.00416.81
8.0.00.0120.00816.91
7.4.330.0050.00015.08
7.4.320.0030.00316.64
7.4.300.0000.00716.61
7.4.290.0040.00416.57
7.4.280.0050.00316.47
7.4.270.0000.00716.42
7.4.260.0080.00016.51
7.4.250.0040.00416.47
7.4.240.0030.00416.40
7.4.230.0030.00416.61
7.4.220.0090.01016.52
7.4.210.0070.00716.56
7.4.200.0000.00716.68
7.4.160.0140.00716.25
7.4.150.0260.02917.40
7.4.140.0140.00617.86
7.4.130.0020.01616.53
7.4.120.0100.00716.41
7.4.110.0120.00916.68
7.4.100.0140.01016.63
7.4.90.0080.00916.54
7.4.80.0050.01119.39
7.4.70.0040.01516.64
7.4.60.0190.00316.26
7.4.50.0040.00016.45
7.4.40.0090.00616.48
7.4.30.0150.01216.37
7.4.00.0050.00914.97
7.3.330.0030.00313.11
7.3.320.0000.00513.01
7.3.310.0040.00416.30
7.3.300.0060.00016.09
7.3.290.0030.00316.24
7.3.280.0110.00816.25
7.3.270.0060.01017.40
7.3.260.0070.01016.41
7.3.250.0070.01016.55
7.3.240.0050.01316.42
7.3.230.0060.00916.68
7.3.210.0120.00816.46
7.3.200.0130.00716.17
7.3.190.0140.00716.54
7.3.180.0040.01216.55
7.3.170.0060.00916.28
7.3.160.0130.00316.35
7.3.120.0120.00614.78
7.3.110.0070.01314.92
7.3.100.0030.01414.92
7.3.90.0110.00014.55
7.3.80.0080.00614.97
7.3.70.0070.00314.89
7.3.60.0030.01314.89
7.3.50.0030.01214.79
7.3.40.0040.00714.89
7.3.30.0060.00314.75
7.3.20.0040.00716.53
7.3.10.0000.01516.57
7.3.00.0000.01116.72
7.2.330.0170.00016.59
7.2.320.0110.00716.50
7.2.310.0060.00916.66
7.2.300.0150.00616.74
7.2.290.0100.00716.33
7.2.250.0070.01314.84
7.2.240.0090.00914.89
7.2.230.0060.01214.65
7.2.220.0030.00615.16
7.2.210.0070.00714.78
7.2.200.0050.00514.69
7.2.190.0060.00914.95
7.2.180.0030.01114.99
7.2.170.0000.01214.99
7.2.60.0060.00916.35
7.2.00.0040.01119.09
7.1.330.0100.00715.57
7.1.320.0040.00415.65
7.1.310.0000.01215.87
7.1.300.0070.00715.76
7.1.290.0070.00715.75
7.1.280.0060.00615.83
7.1.270.0030.00715.69
7.1.260.0030.01415.88
7.1.200.0040.01115.57
7.1.100.0030.00918.09
7.1.70.0000.00817.09
7.1.60.0120.00919.27
7.1.50.0100.01017.02
7.1.00.0030.07722.36
7.0.200.0140.00714.75
7.0.60.0100.08021.71
7.0.50.0100.03717.66
7.0.40.0130.04319.90
7.0.30.0270.05020.00
7.0.20.0130.05720.20
7.0.10.0330.06320.12
7.0.00.0070.07720.17
5.6.280.0100.06721.15
5.6.210.0070.06720.74
5.6.200.0170.08018.19
5.6.190.0170.08320.50
5.6.180.0300.08020.61
5.6.170.0300.06020.58
5.6.160.0070.06020.64
5.6.150.0100.07718.23
5.6.140.0100.07718.15
5.6.130.0030.07018.18
5.6.120.0070.04721.03
5.6.110.0030.04021.00
5.6.100.0130.06320.99
5.6.90.0030.04021.10
5.6.80.0070.08020.38
5.5.350.0270.08020.46
5.5.340.0100.08017.99
5.5.330.0100.08020.34
5.5.320.0330.07020.34
5.5.310.0400.07320.41
5.5.300.0030.06717.98
5.5.290.0070.07318.07
5.5.280.0230.06720.73
5.5.270.0070.03720.88
5.5.260.0170.06720.86
5.5.250.0130.07020.68
5.5.240.0200.07720.21
5.4.450.0700.06019.16
5.4.440.0630.06319.16
5.4.430.0670.05719.68
5.4.420.0670.05319.27
5.4.410.0630.06719.43
5.4.400.0730.05018.98
5.4.390.0900.04719.11
5.4.380.0600.06719.25
5.4.370.0670.05319.25
5.4.360.0670.05319.05
5.4.350.0830.05319.40
5.4.340.0870.06018.95
5.4.320.0600.06719.28
5.4.310.0870.05319.25
5.4.300.0930.05319.08
5.4.290.0870.04719.28
5.4.280.0970.04719.14
5.4.270.0670.06019.12
5.4.260.0800.06019.36
5.4.250.0770.05719.28
5.4.240.1030.05719.24
5.4.230.0970.04719.14
5.4.220.0670.06319.27
5.4.210.0770.06019.22
5.4.200.0930.07019.36
5.4.190.0800.06719.11
5.4.180.0400.05018.83
5.4.170.0270.05319.21
5.4.160.0200.07719.21
5.4.150.0200.06319.11
5.4.140.0800.05716.31
5.4.130.0600.05016.53
5.4.120.0930.07016.75
5.4.110.0730.04716.17
5.4.100.0700.04716.39
5.4.90.0570.06316.58
5.4.80.0730.05716.50
5.4.70.0130.04716.34
5.4.60.0170.03716.54
5.4.50.0030.06716.38
5.4.40.0070.07316.48
5.4.30.0030.03316.55
5.4.20.0400.06016.55

preferences:
53 ms | 401 KiB | 5 Q