3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a' => 'b'); echo isset($a['a']); echo print($a['a']); echo strlen($a['a']);

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)
8.3.60.0110.00718.43
8.3.50.0150.00521.22
8.3.40.0110.00418.54
8.3.30.0110.00419.05
8.3.20.0000.00820.04
8.3.10.0090.00023.64
8.3.00.0030.00619.38
8.2.180.0070.01425.92
8.2.170.0000.01418.96
8.2.160.0100.00720.35
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0050.00226.16
8.2.120.0040.00420.99
8.2.110.0000.00920.47
8.2.100.0090.00318.34
8.2.90.0030.00519.20
8.2.80.0000.00917.97
8.2.70.0040.00417.62
8.2.60.0000.00918.16
8.2.50.0030.00518.07
8.2.40.0000.00718.20
8.2.30.0110.00018.08
8.2.20.0040.00417.56
8.2.10.0000.00717.97
8.2.00.0050.00217.48
8.1.280.0150.00425.92
8.1.270.0000.00822.04
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0040.00423.83
8.1.230.0040.00819.14
8.1.220.0000.00817.74
8.1.210.0050.00318.77
8.1.200.0090.00017.23
8.1.190.0080.00017.22
8.1.180.0000.00718.10
8.1.170.0100.00018.47
8.1.160.0080.00021.99
8.1.150.0000.00818.74
8.1.140.0000.00817.42
8.1.130.0000.00717.70
8.1.120.0080.00017.40
8.1.110.0000.00717.41
8.1.100.0000.00717.28
8.1.90.0030.00517.29
8.1.80.0000.00817.29
8.1.70.0000.00717.25
8.1.60.0000.00817.49
8.1.50.0000.00917.47
8.1.40.0000.00817.32
8.1.30.0080.00017.56
8.1.20.0050.00217.46
8.1.10.0000.00717.54
8.1.00.0040.00417.43
8.0.300.0020.00518.77
8.0.290.0000.00816.75
8.0.280.0000.00718.43
8.0.270.0000.00816.92
8.0.260.0000.00817.23
8.0.250.0030.00316.84
8.0.240.0030.00316.98
8.0.230.0000.00716.71
8.0.220.0030.00316.84
8.0.210.0050.00216.84
8.0.200.0000.00716.93
8.0.190.0000.00716.88
8.0.180.0040.00416.70
8.0.170.0060.00316.83
8.0.160.0060.00316.82
8.0.150.0000.00716.84
8.0.140.0020.00516.70
8.0.130.0030.00313.21
8.0.120.0040.00416.79
8.0.110.0070.00016.65
8.0.100.0000.00716.64
8.0.90.0080.00016.88
8.0.80.0130.00316.81
8.0.70.0000.00716.64
8.0.60.0000.00716.85
8.0.50.0040.00416.85
8.0.30.0140.00917.25
8.0.20.0090.01317.40
8.0.10.0030.00316.84
8.0.00.0100.01316.69
7.4.330.0000.00415.00
7.4.320.0060.00016.54
7.4.300.0030.00316.54
7.4.290.0000.00716.52
7.4.280.0040.00416.33
7.4.270.0000.00716.30
7.4.260.0070.00416.50
7.4.250.0050.00316.50
7.4.240.0000.00716.41
7.4.230.0030.00316.46
7.4.220.0080.01416.48
7.4.210.0070.01016.57
7.4.200.0030.00316.50
7.4.160.0070.01116.50
7.4.150.0140.00917.40
7.4.140.0100.00817.86
7.4.130.0150.00316.47
7.4.120.0080.01316.47
7.4.110.0100.00716.52
7.4.100.0100.00716.55
7.4.90.0120.00616.43
7.4.80.0070.01019.39
7.4.70.0070.01116.50
7.4.60.0130.00316.57
7.4.50.0030.00616.43
7.4.40.0060.01216.43
7.4.30.0080.00816.47
7.4.00.0030.01414.91
7.3.330.0030.00213.14
7.3.320.0050.00012.99
7.3.310.0040.00416.20
7.3.300.0030.00316.29
7.3.290.0070.00716.29
7.3.280.0110.00616.27
7.3.270.0100.00617.40
7.3.260.0040.01516.22
7.3.250.0070.00916.52
7.3.240.0170.00616.28
7.3.230.0140.00816.52
7.3.210.0100.00716.34
7.3.200.0200.00319.39
7.3.190.0110.00716.21
7.3.180.0030.01616.35
7.3.170.0070.01016.27
7.3.160.0030.01316.29
7.2.330.0090.00816.25
7.2.320.0110.00616.52
7.2.310.0030.01316.39
7.2.300.0040.01316.50
7.2.290.0070.01016.28
7.2.60.0070.00717.00
7.2.00.0030.01319.12
7.1.200.0060.00315.57
7.1.100.0080.00418.17
7.1.70.0040.01117.03
7.1.60.0110.01419.32
7.1.50.0090.01316.55
7.1.00.0000.07722.51
7.0.200.0000.00816.84
7.0.140.0100.06722.08
7.0.60.0100.08019.78
7.0.50.0100.07717.80
7.0.40.0070.08720.30
7.0.30.0400.07320.13
7.0.20.0200.03720.12
7.0.10.0000.05320.30
7.0.00.0100.08320.16
5.6.280.0100.08321.12
5.6.210.0100.07020.60
5.6.200.0070.07318.16
5.6.190.0130.07020.48
5.6.180.0300.08320.41
5.6.170.0200.06020.38
5.6.160.0100.04320.33
5.6.150.0100.07718.09
5.6.140.0000.07718.22
5.6.130.0030.08318.11
5.6.120.0030.08320.73
5.6.110.0130.08020.95
5.6.100.0100.04720.97
5.6.90.0170.07720.96
5.6.80.0030.05020.38
5.5.350.0130.08020.43
5.5.340.0100.07717.92
5.5.330.0030.06020.13
5.5.320.0230.04020.20
5.5.310.0170.04720.41
5.5.300.0070.08317.96
5.5.290.0070.07717.93
5.5.280.0070.04720.79
5.5.270.0100.08020.71
5.5.260.0100.07320.85
5.5.250.0100.07720.54
5.5.240.0270.06320.02
5.4.450.0230.04319.29
5.4.440.0700.05319.28
5.4.430.0830.05319.43
5.4.420.0670.00019.42
5.4.410.0870.00019.42
5.4.400.0670.00019.16
5.4.390.0630.00019.08
5.4.380.0700.00019.07
5.4.370.0630.00019.05
5.4.360.0630.00019.07
5.4.350.0700.00019.16
5.4.340.0140.03911.97
5.4.320.0100.03912.45
5.4.310.0090.03612.45
5.4.300.0100.04812.45
5.4.290.0060.04112.45
5.4.280.0080.03312.35
5.4.270.0120.05212.35
5.4.260.0080.05012.35
5.4.250.0090.04912.35
5.4.240.0060.04212.35
5.4.230.0060.04712.34
5.4.220.0060.04512.34
5.4.210.0100.03812.34
5.4.200.0110.05712.34
5.4.190.0100.04812.33
5.4.180.0080.04912.33
5.4.170.0050.04212.35
5.4.160.0090.03612.34
5.4.150.0060.03812.34
5.4.140.0070.04512.02
5.4.130.0070.04012.01
5.4.120.0070.05011.97
5.4.110.0060.04111.96
5.4.100.0080.05011.96
5.4.90.0080.03911.97
5.4.80.0030.04211.96
5.4.70.0100.03411.96
5.4.60.0040.03711.96
5.4.50.0110.05211.96
5.4.40.0200.06911.95
5.4.30.0060.03711.94
5.4.20.0020.04111.95
5.4.10.0110.05211.95
5.4.00.0080.04211.43
5.3.290.0120.03712.80
5.3.280.0040.04212.70
5.3.270.0060.04012.72
5.3.260.0060.04312.72
5.3.250.0090.05012.72
5.3.240.0060.04012.72
5.3.230.0080.04112.71
5.3.220.0090.03812.68
5.3.210.0060.05512.68
5.3.200.0050.05212.68
5.3.190.0110.04012.68
5.3.180.0040.03812.67
5.3.170.0070.03512.67
5.3.160.0070.03812.67
5.3.150.0060.05112.67
5.3.140.0130.04312.66
5.3.130.0120.05412.66
5.3.120.0070.05412.66
5.3.110.0040.05712.66
5.3.100.0090.05612.12
5.3.90.0100.06212.08
5.3.80.0050.04712.08
5.3.70.0050.04212.07
5.3.60.0080.03712.06
5.3.50.0120.04112.00
5.3.40.0040.04412.00
5.3.30.0100.04711.94
5.3.20.0100.04511.72
5.3.10.0080.03511.69
5.3.00.0060.05111.68
5.2.170.0110.0339.18
5.2.160.0070.0289.18
5.2.150.0040.0349.17
5.2.140.0070.0559.17
5.2.130.0090.0399.14
5.2.120.0080.0409.14
5.2.110.0080.0319.14
5.2.100.0030.0339.14
5.2.90.0040.0329.13
5.2.80.0040.0329.13
5.2.70.0060.0359.13
5.2.60.0070.0309.09
5.2.50.0040.0429.05
5.2.40.0090.0289.03
5.2.30.0040.0349.00
5.2.20.0080.0278.99
5.2.10.0060.0388.95
5.2.00.0020.0348.79
5.1.60.0020.0318.08
5.1.50.0060.0248.07
5.1.40.0030.0288.05
5.1.30.0210.0648.40
5.1.20.0070.0388.43
5.1.10.0040.0318.15
5.1.00.0090.0438.15
5.0.50.0040.0256.63
5.0.40.0040.0206.49
5.0.30.0070.0306.30
5.0.20.0070.0156.27
5.0.10.0010.0226.25
5.0.00.0030.0316.24
4.4.90.0030.0164.78
4.4.80.0030.0224.75
4.4.70.0050.0164.75
4.4.60.0020.0164.75
4.4.50.0040.0154.77
4.4.40.0050.0304.71
4.4.30.0030.0164.76
4.4.20.0070.0144.85
4.4.10.0030.0174.85
4.4.00.0020.0294.76
4.3.110.0030.0194.67
4.3.100.0040.0164.66
4.3.90.0030.0154.63
4.3.80.0040.0244.57
4.3.70.0050.0154.63
4.3.60.0040.0204.63
4.3.50.0020.0194.62
4.3.40.0020.0264.54
4.3.30.0030.0163.29
4.3.20.0040.0143.27
4.3.10.0030.0153.23
4.3.00.0130.0237.20

preferences:
56.65 ms | 401 KiB | 5 Q