3v4l.org

run code in 300+ PHP versions simultaneously
<?php $input_array = array("FirSt" => 1, "SecOnd" => 4); print_r(array_change_key_case($input_array, CASE_UPPER)); ?>

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)
8.3.40.0090.00618.45
8.3.30.0140.00018.92
8.3.20.0000.00720.30
8.3.10.0040.00423.61
8.3.00.0070.00019.08
8.2.170.0110.00322.96
8.2.160.0140.00020.39
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0090.00020.87
8.2.110.0080.00420.94
8.2.100.0070.00317.78
8.2.90.0000.00919.22
8.2.80.0050.00317.97
8.2.70.0090.00017.50
8.2.60.0050.00317.93
8.2.50.0050.00318.10
8.2.40.0040.00418.03
8.2.30.0040.00418.05
8.2.20.0030.00617.54
8.2.10.0070.00017.88
8.2.00.0070.00017.61
8.1.270.0000.00823.85
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0060.00322.42
8.1.230.0070.00417.83
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0070.00317.23
8.1.190.0050.00317.11
8.1.180.0040.00418.10
8.1.170.0000.00818.42
8.1.160.0040.00422.01
8.1.150.0070.00018.64
8.1.140.0070.00017.30
8.1.130.0040.00417.87
8.1.120.0000.00717.45
8.1.110.0050.00317.35
8.1.100.0000.00717.41
8.1.90.0080.00017.45
8.1.80.0050.00317.38
8.1.70.0000.00717.27
8.1.60.0030.00617.52
8.1.50.0040.00417.35
8.1.40.0080.00017.36
8.1.30.0060.00317.62
8.1.20.0030.00517.61
8.1.10.0040.00417.38
8.1.00.0040.00417.35
8.0.300.0000.00718.77
8.0.290.0000.00816.63
8.0.280.0050.00218.36
8.0.270.0040.00417.11
8.0.260.0060.00017.23
8.0.250.0030.00316.91
8.0.240.0000.00716.79
8.0.230.0040.00416.90
8.0.220.0070.00016.74
8.0.210.0030.00316.74
8.0.200.0040.00416.93
8.0.190.0030.00516.86
8.0.180.0040.00416.83
8.0.170.0000.00716.84
8.0.160.0030.00416.95
8.0.150.0030.00416.81
8.0.140.0080.00016.70
8.0.130.0030.00313.18
8.0.120.0040.00416.68
8.0.110.0000.00716.65
8.0.100.0040.00416.65
8.0.90.0030.00516.82
8.0.80.0030.01216.83
8.0.70.0000.00716.78
8.0.60.0000.00716.81
8.0.50.0040.00416.72
8.0.30.0080.01116.87
8.0.20.0110.00917.40
8.0.10.0000.00716.91
8.0.00.0130.01016.71
7.4.330.0000.00515.00
7.4.320.0060.00016.53
7.4.300.0060.00016.48
7.4.290.0030.00316.58
7.4.280.0070.00416.48
7.4.270.0030.00316.57
7.4.260.0000.00716.52
7.4.250.0040.00416.49
7.4.240.0020.00516.52
7.4.230.0030.00316.44
7.4.220.0030.01716.47
7.4.210.0030.01016.62
7.4.200.0040.00416.43
7.4.190.0030.00516.32
7.4.160.0120.00316.32
7.4.150.0080.00917.40
7.4.140.0070.01217.86
7.4.130.0150.00616.31
7.4.120.0080.01116.32
7.4.110.0100.00616.56
7.4.100.0080.01116.54
7.4.90.0070.01016.21
7.4.80.0100.01419.39
7.4.70.0130.00316.33
7.4.60.0090.00616.41
7.4.50.0000.00716.22
7.4.40.0090.00916.44
7.4.30.0030.01316.46
7.4.00.0060.01014.75
7.3.330.0000.00513.04
7.3.320.0060.00012.98
7.3.310.0030.00316.18
7.3.300.0070.00016.18
7.3.290.0030.01016.18
7.3.280.0120.00516.10
7.3.270.0100.00717.40
7.3.260.0090.00916.43
7.3.250.0140.00916.22
7.3.240.0070.01016.22
7.3.230.0100.01016.08
7.3.210.0100.00716.08
7.3.200.0120.00919.39
7.3.190.0130.00916.21
7.3.180.0060.00916.04
7.3.170.0110.00616.41
7.3.160.0030.01716.02
7.3.120.0080.00414.88
7.2.330.0150.00716.23
7.2.320.0090.00916.47
7.2.310.0110.00816.52
7.2.300.0070.01016.47
7.2.290.0110.01116.52
7.2.80.0000.01316.56
7.2.00.0070.01019.11
7.1.200.0040.00715.63
7.1.100.0000.01117.99
7.1.70.0070.00017.21
7.1.60.0150.00319.70
7.1.50.0130.01016.66
7.1.00.0000.08022.33
7.0.200.0000.00716.13
7.0.140.0030.07322.08
7.0.100.0100.05319.93
7.0.90.0000.08719.96
7.0.80.0370.06319.84
7.0.70.0130.07319.95
7.0.60.0100.06719.93
7.0.50.0070.04720.34
7.0.40.0130.07020.10
7.0.30.0130.04020.03
7.0.20.0100.08020.10
7.0.10.0030.07720.13
7.0.00.0100.06019.99
5.6.280.0070.07021.10
5.6.250.0170.07320.66
5.6.240.0170.07720.57
5.6.230.0100.06720.63
5.6.220.0100.07320.61
5.6.210.0070.08320.66
5.6.200.0100.08721.13
5.6.190.0100.05021.07
5.6.180.0000.04721.07
5.6.170.0230.05720.93
5.6.160.0070.05021.16
5.6.150.0130.05021.05
5.6.140.0070.05021.16
5.6.130.0130.08321.00
5.6.120.0030.09021.00
5.6.110.0170.08321.00
5.6.100.0130.08721.01
5.6.90.0100.04721.02
5.6.80.0070.08720.41
5.6.70.0030.08320.38
5.6.60.0030.08720.48
5.6.50.0100.04720.54
5.6.40.0100.06320.38
5.6.30.0130.06020.48
5.6.20.0030.08020.38
5.6.10.0100.07320.39
5.6.00.0130.06720.41
5.5.380.0030.04320.41
5.5.370.0070.08020.36
5.5.360.0070.04720.34
5.5.350.0030.06020.41
5.5.340.0100.08020.78
5.5.330.0170.05020.89
5.5.320.0070.04720.92
5.5.310.0070.07720.75
5.5.300.0130.06720.73
5.5.290.0130.04320.77
5.5.280.0200.07020.90
5.5.270.0070.05020.86
5.5.260.0130.07320.58
5.5.250.0070.08320.72
5.5.240.0070.07020.27
5.5.230.0070.07720.27
5.5.220.0100.07720.28
5.5.210.0070.08020.10
5.5.200.0130.07720.10
5.5.190.0100.07020.07
5.5.180.0100.04720.20
5.5.160.0100.08320.24
5.5.150.0070.06020.23
5.5.140.0030.04020.21
5.5.130.0100.04320.16
5.5.120.0070.06020.22
5.5.110.0030.05320.10
5.5.100.0030.07020.07
5.5.90.0100.05020.06
5.5.80.0030.04320.06
5.5.70.0030.08020.07
5.5.60.0100.06020.04
5.5.50.0030.08320.09
5.5.40.0100.06720.07
5.5.30.0130.07720.14
5.5.20.0100.07720.08
5.5.10.0100.07320.13
5.5.00.0000.04320.03
5.4.450.0070.06319.23
5.4.440.0000.05319.11
5.4.430.0030.08319.43
5.4.420.0100.05319.38
5.4.410.0030.08319.25
5.4.400.0100.04019.06
5.4.390.0030.05018.80
5.4.380.0170.06318.98
5.4.370.0100.05019.13
5.4.360.0070.06318.80
5.4.350.0170.06319.08
5.4.340.0100.03318.90
5.4.320.0030.07019.06
5.4.310.0070.07019.10
5.4.300.0070.06019.02
5.4.290.0030.08019.03
5.4.280.0070.04719.06
5.4.270.0070.05319.04
5.4.260.0030.04019.04
5.4.250.0030.07019.06
5.4.240.0030.06319.11
5.4.230.0030.04019.02
5.4.220.0100.07319.04
5.4.210.0070.08319.13
5.4.200.0070.07018.95
5.4.190.0070.07019.21
5.4.180.0100.07718.77
5.4.170.0130.07319.08
5.4.160.0100.04019.20
5.4.150.0100.07719.00
5.4.140.0070.07716.33
5.4.130.0000.08016.06
5.4.120.0030.04716.28
5.4.110.0100.06716.30
5.4.100.0030.04716.34
5.4.90.0100.06716.34
5.4.80.0030.05016.42
5.4.70.0130.06316.22
5.4.60.0130.07016.21
5.4.50.0100.07316.18
5.4.40.0030.04016.43
5.4.30.0070.07316.20
5.4.20.0000.07316.20
5.4.10.0170.07016.29
5.4.00.0070.04015.82
5.3.290.0100.07314.51
5.3.280.0070.07314.54
5.3.270.0030.05314.56
5.3.260.0200.04314.46
5.3.250.0070.07314.45
5.3.240.0070.07714.59
5.3.230.0100.07314.60
5.3.220.0070.08014.55
5.3.210.0100.06314.55
5.3.200.0000.04014.52
5.3.190.0100.08314.55
5.3.180.0030.07714.56
5.3.170.0200.05314.52
5.3.160.0100.05314.47
5.3.150.0030.07714.55
5.3.140.0030.07714.39
5.3.130.0100.06714.40
5.3.120.0130.07014.48
5.3.110.0100.07314.39
5.3.100.0130.03313.87
5.3.90.0070.03313.87
5.3.80.0030.03714.02
5.3.70.0070.03713.87
5.3.60.0000.04013.97
5.3.50.0070.03313.90
5.3.40.0070.03313.80
5.3.30.0100.03013.76
5.3.20.0030.03313.64
5.3.10.0070.07013.66
5.3.00.0000.05313.39
5.2.170.0000.03311.19
5.2.160.0030.02711.14
5.2.150.0070.03011.06
5.2.140.0030.03010.98
5.2.130.0000.02711.09
5.2.120.0030.03711.02
5.2.110.0000.02711.14
5.2.100.0000.03011.12
5.2.90.0030.02711.08
5.2.80.0070.02711.05
5.2.70.0000.03310.93
5.2.60.0000.03310.84
5.2.50.0000.03310.97
5.2.40.0000.02711.01
5.2.30.0000.03010.83
5.2.20.0000.04310.98
5.2.10.0000.03010.78
5.2.00.0030.02710.84
5.1.60.0030.0309.81
5.1.50.0070.01710.11
5.1.40.0030.02310.05
5.1.30.0030.02310.46
5.1.20.0000.02710.35
5.1.10.0000.02710.06
5.1.00.0000.02710.07
5.0.50.0030.0209.34
5.0.40.0030.0209.34
5.0.30.0030.0579.34
5.0.20.0030.0209.34
5.0.10.0000.0209.34
5.0.00.0000.0309.34
4.4.90.0000.0179.34
4.4.80.0000.0209.34
4.4.70.0000.0139.34
4.4.60.0030.0139.34
4.4.50.0000.0179.34
4.4.40.0000.0239.34
4.4.30.0000.0179.34
4.4.20.0000.0209.34
4.4.10.0000.0179.34
4.4.00.0000.0279.34
4.3.110.0000.0139.34
4.3.100.0000.0139.34
4.3.90.0000.0179.34
4.3.80.0030.0209.34
4.3.70.0000.0179.34
4.3.60.0000.0179.34
4.3.50.0000.0179.34
4.3.40.0030.0179.34
4.3.30.0000.0139.34
4.3.20.0000.0209.34
4.3.10.0030.0139.34
4.3.00.0000.0139.34

preferences:
39.33 ms | 400 KiB | 5 Q