3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('z'); var_dump(is_int(key($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)
8.3.60.0120.00318.43
8.3.50.0140.00621.21
8.3.40.0070.00718.57
8.3.30.0080.00620.17
8.3.20.0040.00420.41
8.3.10.0040.00420.79
8.3.00.0080.00023.66
8.2.180.0150.00616.34
8.2.170.0140.00722.96
8.2.160.0070.00720.39
8.2.150.0080.00024.18
8.2.140.0030.00524.66
8.2.130.0070.00426.16
8.2.120.0040.00421.07
8.2.110.0040.00420.96
8.2.100.0060.00617.78
8.2.90.0000.00819.09
8.2.80.0000.00719.47
8.2.70.0000.00917.50
8.2.60.0000.00717.68
8.2.50.0040.00418.07
8.2.40.0040.00418.09
8.2.30.0000.00719.43
8.2.20.0000.00817.59
8.2.10.0000.00717.68
8.2.00.0000.00817.70
8.1.280.0120.00325.92
8.1.270.0040.00423.99
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0080.00022.47
8.1.230.0070.00420.95
8.1.220.0060.00318.77
8.1.210.0100.00018.77
8.1.200.0060.00317.22
8.1.190.0040.00417.53
8.1.180.0000.00818.10
8.1.170.0050.00318.49
8.1.160.0000.00718.74
8.1.150.0000.00718.52
8.1.140.0030.00517.29
8.1.130.0040.00417.70
8.1.120.0000.00717.42
8.1.110.0040.00417.38
8.1.100.0040.00417.45
8.1.90.0050.00217.44
8.1.80.0000.00717.44
8.1.70.0030.00317.28
8.1.60.0030.00617.51
8.1.50.0040.00417.33
8.1.40.0040.00417.53
8.1.30.0030.00617.52
8.1.20.0040.00417.59
8.1.10.0030.00517.47
8.1.00.0000.00817.36
8.0.300.0040.00419.92
8.0.290.0000.00816.93
8.0.280.0040.00418.25
8.0.270.0030.00317.20
8.0.260.0000.00816.77
8.0.250.0000.00716.79
8.0.240.0030.00316.76
8.0.230.0000.00716.87
8.0.220.0070.00016.86
8.0.210.0000.00716.79
8.0.200.0000.00616.91
8.0.190.0040.00416.80
8.0.180.0040.00416.84
8.0.170.0040.00416.75
8.0.160.0030.00316.79
8.0.150.0070.00016.76
8.0.140.0030.00316.85
8.0.130.0040.00413.26
8.0.120.0060.00316.77
8.0.110.0040.00416.69
8.0.100.0050.00316.75
8.0.90.0040.00416.79
8.0.80.0030.01116.89
8.0.70.0080.00016.71
8.0.60.0030.00516.70
8.0.50.0000.00716.85
8.0.30.0120.00617.03
8.0.20.0100.00817.40
8.0.10.0000.00716.85
8.0.00.0100.00616.60
7.4.330.0060.00014.98
7.4.320.0000.00716.36
7.4.300.0000.00616.39
7.4.290.0040.00416.50
7.4.280.0040.00416.44
7.4.270.0000.00716.54
7.4.260.0060.00313.14
7.4.250.0040.00416.31
7.4.240.0070.00016.49
7.4.230.0000.00716.59
7.4.220.0110.00716.57
7.4.210.0070.00716.55
7.4.200.0040.00416.55
7.4.190.0040.00416.67
7.4.160.0110.00616.54
7.4.150.0170.00717.40
7.4.140.0110.00717.86
7.4.130.0080.01416.40
7.4.120.0150.00516.45
7.4.110.0200.00016.48
7.4.100.0160.00616.52
7.4.90.0120.00616.40
7.4.80.0130.01019.39
7.4.70.0060.01016.42
7.4.60.0170.00016.35
7.4.50.0040.00416.51
7.4.40.0150.00022.77
7.4.30.0120.00416.30
7.4.00.0040.01114.72
7.3.330.0050.00012.89
7.3.320.0050.00013.12
7.3.310.0000.00715.96
7.3.300.0070.00016.04
7.3.290.0120.00316.13
7.3.280.0080.00816.15
7.3.270.0070.01117.40
7.3.260.0100.00918.24
7.3.250.0080.01016.22
7.3.240.0120.01216.08
7.3.230.0120.00416.39
7.3.210.0120.00416.08
7.3.200.0120.01219.39
7.3.190.0030.01916.35
7.3.180.0120.00316.48
7.3.170.0130.00316.27
7.3.160.0100.00716.34
7.3.120.0060.01014.83
7.2.330.0140.00416.43
7.2.320.0180.00016.48
7.2.310.0060.01616.55
7.2.300.0160.00316.59
7.2.290.0060.00916.64
7.2.60.0100.00016.78
7.2.50.0130.00016.77
7.2.00.0150.00619.33
7.1.200.0000.01015.80
7.1.100.0070.00718.33
7.1.70.0000.01016.77
7.1.60.0100.01419.17
7.1.50.0110.01417.01
7.1.00.0030.04722.27
7.0.200.0000.00716.36
7.0.140.0070.07022.19
7.0.60.0130.08319.93
7.0.50.0070.08017.88
7.0.40.0070.04020.24
7.0.30.0230.09020.09
7.0.20.0270.08320.05
7.0.10.0330.07720.33
7.0.00.0030.04319.99
5.6.210.0030.04320.66
5.6.200.0070.08018.14
5.6.190.0000.08320.39
5.6.180.3470.03320.43
5.6.170.0230.08320.38
5.6.160.0030.08020.32
5.6.150.0070.08018.18
5.6.140.0030.04718.16
5.6.130.0130.05718.11
5.6.120.0200.06020.98
5.6.110.0030.08321.13
5.6.100.0070.05320.88
5.6.90.0130.05021.12
5.6.80.0170.07020.48
5.6.70.0330.07020.40
5.5.350.0270.07720.41
5.5.340.0170.07317.88
5.5.330.0070.05720.12
5.5.320.0130.04320.34
5.5.310.0200.08020.36
5.5.300.0030.08317.92
5.5.290.0100.08018.01
5.5.280.0000.04320.76
5.5.270.0030.04020.83
5.5.260.0070.04020.77
5.5.250.0070.05320.69
5.5.240.0070.07020.14
5.4.450.0070.03719.41
5.4.440.0070.04719.47
5.4.430.0000.04019.38
5.4.420.0030.06019.40
5.4.410.0030.04019.28
5.4.400.0030.07018.93
5.4.390.0100.05019.10
5.4.380.0000.04019.25
5.4.370.0000.03719.16
5.4.360.0030.07319.16
5.4.350.0030.04319.13
5.4.340.0000.05718.92
5.4.320.0000.06718.92
5.4.310.0070.03019.10
5.4.300.0000.03719.11
5.4.290.0030.04318.92
5.4.280.0000.03719.16
5.4.270.0030.07719.24
5.4.260.0000.04319.07
5.4.250.0070.05719.15
5.4.240.0000.04019.09
5.4.230.0030.03318.88
5.4.220.0000.04019.15
5.4.210.0000.04019.12
5.4.200.0030.04019.05
5.4.190.0000.04019.07
5.4.180.0030.03318.91
5.4.170.0000.04719.23
5.4.160.0000.06019.11
5.4.150.0000.04019.06
5.4.140.0030.03716.23
5.4.130.0030.03316.54
5.4.120.0000.08016.28
5.4.110.0000.04016.43
5.4.100.0030.03316.19
5.4.90.0030.07016.45
5.4.80.0000.03716.41
5.4.70.0170.03316.48
5.4.60.0000.05716.04
5.4.50.0030.07316.36
5.4.40.0030.03716.20
5.4.30.0000.06716.30
5.4.20.0030.06716.21
5.4.10.0000.05316.43
5.4.00.0000.05315.87
5.3.290.0030.08314.63
5.3.280.0000.04714.61
5.3.270.0000.03714.44
5.3.260.0030.07314.44
5.3.250.0070.03014.46
5.3.240.0030.03714.55
5.3.230.0030.03714.57
5.3.220.0000.06314.39
5.3.210.0000.04314.44
5.3.200.0100.03714.46
5.3.190.0030.04714.51
5.3.180.0000.04714.39
5.3.170.0000.07314.43
5.3.160.0030.08014.51
5.3.150.0100.03714.65
5.3.140.0030.04714.46
5.3.130.0000.04714.45
5.3.120.0000.07714.52
5.3.110.0030.06714.40
5.3.100.0000.04714.13
5.3.90.0000.07313.85
5.3.80.0030.07313.86
5.3.70.0030.05714.04
5.3.60.0000.07713.96
5.3.50.0070.03013.88
5.3.40.0070.04313.92
5.3.30.0070.03013.68
5.3.20.0030.06713.73
5.3.10.0000.07313.51
5.3.00.0000.07713.66
5.2.170.0000.06712.02
5.2.160.0030.05712.02
5.2.150.0070.02712.02
5.2.140.0070.04312.02
5.2.130.0070.05312.02
5.2.120.0030.05712.02
5.2.110.0000.06012.02
5.2.100.0000.04312.02
5.2.90.0030.02712.02
5.2.80.0030.03712.02
5.2.70.0030.03712.02
5.2.60.0030.03712.02
5.2.50.0000.04312.02
5.2.40.0030.02712.02
5.2.30.0030.02712.02
5.2.20.0000.02712.02
5.2.10.0000.04012.02
5.2.00.0000.03712.02
5.1.60.0000.06012.02
5.1.50.0030.04312.02
5.1.40.0000.02312.02
5.1.30.0030.02712.02
5.1.20.0000.03012.02
5.1.10.0030.04312.02
5.1.00.0000.04712.02
5.0.50.0030.02012.02
5.0.40.0000.02012.02
5.0.30.0000.03312.02
5.0.20.0030.01712.02
5.0.10.0070.01312.02
5.0.00.0000.05312.02
4.4.90.0030.02312.02
4.4.80.0000.03012.02
4.4.70.0000.01312.02
4.4.60.0000.01312.02
4.4.50.0000.03312.02
4.4.40.0030.02312.02
4.4.30.0000.02012.02
4.4.20.0000.01712.02
4.4.10.0000.03012.02
4.4.00.0000.02312.02
4.3.110.0000.01312.02
4.3.100.0000.01312.02
4.3.90.0030.03312.02
4.3.80.0030.03712.02
4.3.70.0000.02312.02
4.3.60.0000.03312.02
4.3.50.0000.01712.02
4.3.40.0000.02712.02
4.3.30.0000.03312.02
4.3.20.0000.01712.02
4.3.10.0000.02012.02
4.3.00.0030.01312.02

preferences:
41.81 ms | 401 KiB | 5 Q