3v4l.org

run code in 300+ PHP versions simultaneously
<?php $count = count( array_keys( array( 'sdf' => 1, 'sdf' => 2), 2 )); print_r( $count );

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)
8.3.70.0110.00716.63
8.3.60.0150.00018.30
8.3.50.0130.00521.97
8.3.40.0140.00718.58
8.3.30.0110.01118.50
8.3.20.0060.00318.43
8.3.10.0050.00321.03
8.3.00.0080.00021.73
8.2.180.0170.00316.50
8.2.170.0070.00722.96
8.2.160.0040.01120.52
8.2.150.0030.00624.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00421.00
8.2.110.0090.00020.47
8.2.100.0130.00017.59
8.2.90.0040.00418.98
8.2.80.0000.00817.97
8.2.70.0070.00317.50
8.2.60.0000.00818.04
8.2.50.0060.00318.07
8.2.40.0000.00718.09
8.2.30.0040.00419.48
8.2.20.0070.00017.66
8.2.10.0000.00817.64
8.2.00.0000.00817.77
8.1.280.0130.00725.92
8.1.270.0000.00823.99
8.1.260.0030.00626.35
8.1.250.0070.00028.09
8.1.240.0040.00722.54
8.1.230.0000.01120.97
8.1.220.0030.00518.77
8.1.210.0050.00318.85
8.1.200.0060.00317.35
8.1.190.0000.00917.50
8.1.180.0000.00818.10
8.1.170.0060.00318.50
8.1.160.0040.00418.91
8.1.150.0000.00718.63
8.1.140.0000.00717.46
8.1.130.0000.00717.68
8.1.120.0000.00717.37
8.1.110.0000.00717.32
8.1.100.0080.00017.47
8.1.90.0040.00417.34
8.1.80.0020.00517.50
8.1.70.0030.00317.41
8.1.60.0030.00617.60
8.1.50.0000.00817.47
8.1.40.0040.00417.47
8.1.30.0040.00417.55
8.1.20.0000.00817.47
8.1.10.0020.00517.45
8.1.00.0000.00817.35
8.0.300.0030.00319.90
8.0.290.0000.00717.04
8.0.280.0000.00718.28
8.0.270.0000.00717.02
8.0.260.0030.00316.71
8.0.250.0040.00416.90
8.0.240.0030.00616.89
8.0.230.0030.00516.76
8.0.220.0050.00316.73
8.0.210.0000.00716.73
8.0.200.0030.00316.92
8.0.190.0000.00716.91
8.0.180.0000.00816.91
8.0.170.0000.00716.92
8.0.160.0030.00316.84
8.0.150.0070.00016.81
8.0.140.0000.00716.73
8.0.130.0000.00513.30
8.0.120.0000.00716.83
8.0.110.0030.00716.94
8.0.100.0030.00516.84
8.0.90.0030.00516.90
8.0.80.0150.00616.80
8.0.70.0000.00716.99
8.0.60.0040.00416.77
8.0.50.0040.00416.76
8.0.30.0090.01016.93
8.0.20.0110.00717.40
8.0.10.0030.00417.03
8.0.00.0120.00616.88
7.4.330.0000.00516.80
7.4.320.0000.00616.59
7.4.300.0000.00616.48
7.4.290.0030.00316.39
7.4.280.0030.00316.58
7.4.270.0040.00416.63
7.4.260.0000.00613.26
7.4.250.0050.00216.52
7.4.240.0000.00616.52
7.4.230.0030.00516.51
7.4.220.0130.00316.54
7.4.210.0050.01016.55
7.4.200.0070.00016.47
7.4.190.0040.00416.55
7.4.160.0080.00916.36
7.4.150.0130.01017.40
7.4.140.0120.00917.86
7.4.130.0060.01116.47
7.4.120.0110.00616.37
7.4.110.0090.00916.39
7.4.100.0130.00716.26
7.4.90.0070.01016.34
7.4.80.0110.00619.39
7.4.70.0070.01016.38
7.4.60.0110.00616.30
7.4.50.0030.00616.04
7.4.40.0040.00922.77
7.4.30.0100.01116.54
7.4.00.0000.00914.64
7.3.330.0060.00013.10
7.3.320.0030.00313.03
7.3.310.0070.00016.24
7.3.300.0000.00716.08
7.3.290.0060.00916.25
7.3.280.0080.01016.23
7.3.270.0090.00917.40
7.3.260.0110.01018.24
7.3.250.0130.01116.47
7.3.240.0040.01216.24
7.3.230.0100.00716.39
7.3.210.0030.01316.55
7.3.200.0060.00916.41
7.3.190.0160.00616.25
7.3.180.0090.00616.29
7.3.170.0100.00616.54
7.3.160.0030.01416.21
7.3.120.0030.00914.63
7.2.330.0070.01016.15
7.2.320.0060.01216.65
7.2.310.0100.01016.37
7.2.300.0070.01016.59
7.2.290.0080.00816.16
7.2.60.1160.00814.71
7.2.00.0030.00919.15
7.1.100.0080.00318.33
7.1.70.0000.00817.17
7.1.60.0120.00316.93
7.1.50.0000.01016.89
7.1.00.0070.03022.34
7.0.200.0050.00316.70
7.0.140.0070.07022.00
7.0.60.0270.05719.82
7.0.50.0130.03322.16
7.0.40.0100.03320.03
7.0.30.0070.03720.07
7.0.20.0070.03720.02
7.0.10.0070.03320.07
7.0.00.0100.03319.99
5.6.280.0030.07321.07
5.6.210.0170.03720.60
5.6.200.0170.03721.12
5.6.190.0070.03721.01
5.6.180.0070.03320.98
5.6.170.0030.03721.11
5.6.160.0070.04021.00
5.6.150.0100.03020.96
5.6.140.0030.03721.00
5.6.130.0130.04321.11
5.6.120.0130.08021.02
5.6.110.0130.07021.13
5.6.100.0200.04321.00
5.6.90.0030.07721.11
5.6.80.0100.07720.50
5.6.70.0100.05320.27
5.6.60.0070.07320.36
5.6.50.0100.07720.43
5.6.40.0070.07320.47
5.6.30.0130.07720.36
5.6.20.0070.08720.49
5.6.10.0100.07020.47
5.6.00.0100.08020.32
5.5.350.0200.03720.51
5.5.340.0170.03320.80
5.5.330.0130.03320.77
5.5.320.0070.03320.80
5.5.310.0070.03720.89
5.5.300.0030.03720.76
5.5.290.0070.04020.86
5.5.280.0030.04320.87
5.5.270.0170.05320.88
5.5.260.0030.07320.88
5.5.250.0100.08020.74
5.5.240.0070.07020.25
5.5.230.0130.07720.14
5.5.220.0070.06320.05
5.5.210.0070.05020.35
5.5.200.0030.06320.20
5.5.190.0070.06320.03
5.5.180.0070.08020.07
5.5.160.0070.07320.00
5.5.150.0170.06720.14
5.5.140.0170.06020.07
5.5.130.0070.06019.99
5.5.120.0030.07020.21
5.5.110.0070.07719.98
5.5.100.0170.07020.00
5.5.90.0070.06719.99
5.5.80.0170.06720.13
5.5.70.0230.06020.06
5.5.60.0100.08020.02
5.5.50.0170.07020.02
5.5.40.0100.07320.00
5.5.30.0030.06720.05
5.5.20.0100.06020.03
5.5.10.0270.07020.03
5.5.00.0130.07320.16
5.4.450.0070.03319.40
5.4.440.0100.03719.17
5.4.430.0070.06719.47
5.4.420.0070.05019.27
5.4.410.0170.05719.29
5.4.400.0100.07718.95
5.4.390.0100.08019.20
5.4.380.0100.08018.85
5.4.370.0170.06718.98
5.4.360.0130.06018.98
5.4.350.0100.07319.01
5.4.340.0070.07318.94
5.4.320.0070.07319.00
5.4.310.0070.07019.00
5.4.300.0170.06718.94
5.4.290.0070.07319.19
5.4.280.0100.05019.20
5.4.270.0130.07718.94
5.4.260.0100.07319.16
5.4.250.0100.05718.88
5.4.240.0130.06019.20
5.4.230.0100.07019.16
5.4.220.0130.06318.96
5.4.210.0070.07018.94
5.4.200.0170.04719.05
5.4.190.0130.07318.94
5.4.180.0030.07318.99
5.4.170.0100.04718.98
5.4.160.0100.07318.90
5.4.150.0200.06718.82
5.4.140.0130.07016.35
5.4.130.0170.07016.30
5.4.120.0030.07316.33
5.4.110.0100.04316.20
5.4.100.0030.07716.25
5.4.90.0070.07716.40
5.4.80.0270.05716.22
5.4.70.0100.06716.37
5.4.60.0100.06016.27
5.4.50.0130.06316.18
5.4.40.0130.06716.27
5.4.30.0130.04016.25
5.4.20.0130.03016.24
5.4.10.0100.06716.25
5.4.00.0100.06715.66
5.3.290.0030.08014.63
5.3.280.0070.06714.59
5.3.270.0100.07314.59
5.3.260.0130.06314.59
5.3.250.0000.07714.58
5.3.240.0100.08014.56
5.3.230.0100.07314.54
5.3.220.0100.06314.49
5.3.210.0030.08714.50
5.3.200.0130.06714.54
5.3.190.0070.07714.54
5.3.180.0070.07014.34
5.3.170.0170.07014.42
5.3.160.0100.04714.47
5.3.150.0070.06314.35
5.3.140.0130.05314.53
5.3.130.0100.04014.52
5.3.120.0070.03714.48
5.3.110.0070.04714.45
5.3.100.0100.07313.96
5.3.90.0100.06313.84
5.3.80.0100.06713.98
5.3.70.0070.07713.95
5.3.60.0130.07013.84
5.3.50.0130.06313.79
5.3.40.0130.06313.92
5.3.30.0070.06013.87
5.3.20.0170.04713.64
5.3.10.0070.04013.54
5.3.00.0030.08013.61
5.2.170.0000.06711.11
5.2.160.0030.05711.17
5.2.150.0030.04311.07
5.2.140.0070.06011.16
5.2.130.0070.05711.08
5.2.120.0100.04711.12
5.2.110.0000.03711.08
5.2.100.0100.05711.09
5.2.90.0030.06011.08
5.2.80.0030.05011.10
5.2.70.0100.05011.07
5.2.60.0030.04711.07
5.2.50.0070.05011.00
5.2.40.0070.05710.77
5.2.30.0030.06310.99
5.2.20.0070.05310.95
5.2.10.0030.05010.89
5.2.00.0000.06310.61
5.1.60.0070.04310.02
5.1.50.0030.0539.82
5.1.40.0000.04310.04
5.1.30.0000.04310.41
5.1.20.0030.05710.31
5.1.10.0030.0579.90
5.1.00.0070.05010.05
5.0.50.0000.0508.90
5.0.40.0030.0438.90
5.0.30.0030.0578.90
5.0.20.0030.0378.90
5.0.10.0000.0478.90
5.0.00.0030.0578.90
4.4.90.0000.0238.90
4.4.80.0030.0238.90
4.4.70.0000.0378.90
4.4.60.0070.0338.90
4.4.50.0030.0278.90
4.4.40.0030.0478.90
4.4.30.0030.0338.90
4.4.20.0030.0338.90
4.4.10.0000.0278.90
4.4.00.0070.0408.90
4.3.110.0030.0308.90
4.3.100.0000.0308.90
4.3.90.0030.0338.90
4.3.80.0000.0578.90
4.3.70.0000.0308.90
4.3.60.0000.0308.90
4.3.50.0030.0338.90
4.3.40.0030.0408.90
4.3.30.0000.0338.90
4.3.20.0000.0308.90
4.3.10.0000.0408.90
4.3.00.0070.0278.90

preferences:
47.98 ms | 401 KiB | 5 Q