3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array(0 => 200, "color" => "red"); $keys = array_keys($array); print_r($keys[1]); ?>

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)
8.3.40.0070.00718.49
8.3.30.0110.00718.58
8.3.20.0000.00818.70
8.3.10.0050.00318.73
8.3.00.0090.00019.04
8.2.170.0130.00722.96
8.2.160.0030.01318.74
8.2.150.0080.00024.18
8.2.140.0090.00024.66
8.2.130.0080.00026.16
8.2.120.0040.00421.04
8.2.110.0090.00022.13
8.2.100.0030.00917.72
8.2.90.0040.00418.03
8.2.80.0050.00217.97
8.2.70.0000.00817.63
8.2.60.0000.00817.68
8.2.50.0060.00317.80
8.2.40.0040.00419.47
8.2.30.0000.00817.68
8.2.20.0060.00317.65
8.2.10.0070.00017.73
8.2.00.0050.00317.77
8.1.270.0070.00023.99
8.1.260.0090.00626.35
8.1.250.0040.00428.09
8.1.240.0140.00422.06
8.1.230.0080.00320.88
8.1.220.0040.00417.74
8.1.210.0000.00818.90
8.1.200.0000.00917.13
8.1.190.0000.00817.23
8.1.180.0040.00418.10
8.1.170.0050.00217.62
8.1.160.0040.00419.07
8.1.150.0050.00218.52
8.1.140.0000.00717.39
8.1.130.0080.00019.24
8.1.120.0030.00317.44
8.1.110.0030.00517.40
8.1.100.0000.00717.34
8.1.90.0050.00217.42
8.1.80.0040.00417.46
8.1.70.0000.00717.37
8.1.60.0000.00717.55
8.1.50.0070.00017.30
8.1.40.0060.00317.34
8.1.30.0050.00317.61
8.1.20.0070.00017.52
8.1.10.0000.00717.55
8.1.00.0030.00617.33
8.0.300.0000.00719.80
8.0.290.0030.00616.58
8.0.280.0040.00418.44
8.0.270.0040.00417.17
8.0.260.0000.00618.45
8.0.250.0040.00416.90
8.0.240.0000.00716.92
8.0.230.0030.00516.89
8.0.220.0030.00416.87
8.0.210.0040.00416.83
8.0.200.0000.00616.87
8.0.190.0070.00016.91
8.0.180.0110.00016.83
8.0.170.0000.01116.89
8.0.160.0000.00716.72
8.0.150.0000.00816.75
8.0.140.0030.00716.75
8.0.130.0030.00313.18
8.0.120.0000.00916.69
8.0.110.0040.00416.81
8.0.100.0080.00016.86
8.0.90.0040.00416.89
8.0.80.0060.00916.77
8.0.70.0040.00416.94
8.0.60.0000.00816.77
8.0.50.0080.00016.79
8.0.30.0140.00716.80
8.0.20.0120.00616.92
8.0.10.0000.00816.90
8.0.00.0070.01516.89
7.4.330.0000.00512.93
7.4.320.0000.00716.57
7.4.300.0060.00016.58
7.4.290.0110.00016.44
7.4.280.0060.00316.34
7.4.270.0030.00316.39
7.4.260.0000.00513.33
7.4.250.0060.00316.29
7.4.240.0000.00716.55
7.4.230.0030.00316.34
7.4.220.0090.01416.41
7.4.210.0030.01716.53
7.4.200.0040.00416.51
7.4.190.0000.00816.34
7.4.160.0080.00816.29
7.4.150.0110.00716.49
7.4.140.0060.01517.86
7.4.130.0120.01216.29
7.4.120.0130.00316.41
7.4.110.0060.01516.26
7.4.100.0070.01716.32
7.4.90.0090.00916.40
7.4.80.0090.01219.39
7.4.70.0140.00316.60
7.4.60.0140.00316.37
7.4.50.0060.00316.29
7.4.40.0110.00416.63
7.4.30.0070.01016.52
7.4.00.0040.01214.80
7.3.330.0030.00313.18
7.3.320.0050.00012.95
7.3.310.0030.00316.19
7.3.300.0000.00616.03
7.3.290.0030.01116.19
7.3.280.0120.00616.26
7.3.270.0130.00716.36
7.3.260.0080.01216.52
7.3.240.0120.00616.47
7.3.230.0060.00916.24
7.3.210.0070.01016.12
7.3.200.0070.01016.38
7.3.190.0080.00816.30
7.3.180.0130.00316.52
7.3.170.0080.00916.39
7.3.160.0000.01516.36
7.3.120.0060.01014.82
7.3.10.0130.00615.63
7.3.00.0110.00715.91
7.2.330.0090.01016.57
7.2.320.0070.01016.32
7.2.310.0150.00916.34
7.2.300.0080.01516.62
7.2.290.0060.01516.19
7.2.130.0120.00616.04
7.2.120.0070.01316.23
7.2.110.0100.00716.31
7.2.100.0140.00016.27
7.2.90.0040.01116.59
7.2.80.0130.00616.35
7.2.70.0140.01016.26
7.2.60.0090.00916.39
7.2.50.0150.01116.26
7.2.40.0100.01016.45
7.2.30.0130.01016.70
7.2.20.0130.00716.41
7.2.10.0180.01116.34
7.2.00.0140.00516.66
7.1.250.0070.00715.09
7.1.70.0060.00317.11
7.1.60.0070.01319.25
7.1.50.0170.01116.85
7.1.00.0000.03722.54
7.0.200.0070.00016.68
7.0.140.0070.06322.08
7.0.120.0030.05322.24
7.0.60.0070.08319.78
7.0.50.0070.03717.83
7.0.40.0070.03717.79
7.0.30.0000.04317.80
7.0.20.0130.04717.75
7.0.10.0070.03717.68
7.0.00.0000.05317.73
5.6.280.0030.07020.77
5.6.210.0100.04320.68
5.6.200.0030.04018.16
5.6.190.0000.04318.12
5.6.180.0030.04018.22
5.6.170.0030.04018.19
5.6.160.0070.03718.16
5.6.150.0070.03718.09
5.6.140.0000.04318.09
5.6.130.0030.04018.18
5.6.120.0030.04018.08
5.6.110.0070.03718.08
5.6.100.0130.03718.10
5.6.90.0000.04318.10
5.6.80.0000.04017.57
5.6.70.0030.04317.53
5.6.60.0100.05317.48
5.6.50.0030.06717.57
5.6.40.0100.07717.50
5.6.30.0030.08717.45
5.6.20.0130.07317.57
5.6.10.0100.06717.46
5.6.00.0070.06317.52
5.5.350.0100.04020.41
5.5.340.0130.03017.88
5.5.330.0000.04317.98
5.5.320.0000.04017.98
5.5.310.0030.03717.97
5.5.300.0070.03718.01
5.5.290.0130.04017.98
5.5.280.0030.04017.93
5.5.270.0030.04017.91
5.5.260.0000.04317.94
5.5.250.0100.03017.70
5.5.240.0100.03017.36
5.5.230.0070.03317.25
5.5.220.0070.08017.39
5.5.210.0030.07317.38
5.5.200.0100.07017.33
5.5.190.0070.07717.33
5.5.180.0030.05017.33
5.5.160.0100.07017.33
5.5.150.0170.04717.26
5.5.140.0000.08717.33
5.5.130.0100.06717.32
5.5.120.0100.07717.31
5.5.110.0070.08017.35
5.5.100.0070.08017.27
5.5.90.0170.05717.12
5.5.80.0070.06717.13
5.5.70.0100.07317.26
5.5.60.0070.07317.21
5.5.50.0100.04717.19
5.5.40.0070.08317.22
5.5.30.0130.07317.21
5.5.20.0100.06017.18
5.5.10.0170.06317.20
5.5.00.0130.07317.22
5.4.450.0030.04019.34
5.4.440.0070.04019.32
5.4.430.0170.03019.44
5.4.420.0070.03319.29
5.4.410.0000.04019.16
5.4.400.0030.03718.98
5.4.390.0030.03719.13
5.4.380.0070.03719.16
5.4.370.0030.07318.98
5.4.360.0100.05719.12
5.4.350.0230.06319.02
5.4.340.0170.06719.01
5.4.320.0170.06719.09
5.4.310.0030.07019.03
5.4.300.0070.08019.00
5.4.290.0130.06718.96
5.4.280.0130.07018.89
5.4.270.0030.04318.99
5.4.260.0130.07318.95
5.4.250.0130.06319.10
5.4.240.0070.07718.96
5.4.230.0030.06319.11
5.4.220.0100.04319.08
5.4.210.0030.07019.08
5.4.200.0070.06318.98
5.4.190.0130.05718.97
5.4.180.0030.07718.98
5.4.170.0130.06319.02
5.4.160.0030.08018.95
5.4.150.0100.06718.95
5.4.140.0030.05716.31
5.4.130.0070.06716.27
5.4.120.0130.03316.27
5.4.110.0100.04716.52
5.4.100.0000.04016.23
5.4.90.0030.04016.48
5.4.80.0030.04316.35
5.4.70.0030.05016.24
5.4.60.0070.05316.41
5.4.50.0130.04716.23
5.4.40.0000.05016.41
5.4.30.0100.04016.49
5.4.20.0070.04316.14
5.4.10.0030.07716.28
5.4.00.0070.05015.61
5.3.290.0070.08014.61
5.3.280.0070.04314.56
5.3.270.0030.05314.54
5.3.260.0100.06714.45
5.3.250.0000.07314.57
5.3.240.0130.06714.57
5.3.230.0030.06014.37
5.3.220.0030.04314.39
5.3.210.0100.04014.52
5.3.200.0100.03714.64
5.3.190.0100.03314.48
5.3.180.0000.04014.34
5.3.170.0030.04014.48
5.3.160.0100.06714.51
5.3.150.0100.07314.48
5.3.140.0000.06014.52
5.3.130.0070.06714.50
5.3.120.0070.04714.52
5.3.110.0070.06714.53
5.3.100.0030.05314.00
5.3.90.0000.04713.98
5.3.80.0030.03713.92
5.3.70.0100.04713.92
5.3.60.0170.06713.95
5.3.50.0100.03713.91
5.3.40.0030.07013.74
5.3.30.0100.04013.90
5.3.20.0100.07013.61
5.3.10.0000.04713.50
5.3.00.0130.06313.59
5.2.170.0030.03011.11
5.2.160.0000.03011.06
5.2.150.0030.06311.09
5.2.140.0070.03011.04
5.2.130.0100.05011.09
5.2.120.0130.04710.99
5.2.110.0030.06011.07
5.2.100.0000.04311.06
5.2.90.0000.06311.09
5.2.80.0100.03711.00
5.2.70.0070.06010.92
5.2.60.0070.05310.87
5.2.50.0000.06711.02
5.2.40.0000.03710.82
5.2.30.0070.03310.99
5.2.20.0130.04310.88
5.2.10.0030.03010.74
5.2.00.0100.05710.86
5.1.60.0100.0209.98
5.1.50.0030.04710.03
5.1.40.0070.04310.01
5.1.30.0000.03710.38
5.1.20.0070.04010.19
5.1.10.0070.05710.09
5.1.00.0000.05710.04
5.0.50.0100.0438.61
5.0.40.0130.0378.23
5.0.30.0070.0478.36
5.0.20.0000.0308.26
5.0.10.0070.0338.23
5.0.00.0000.0638.15
4.4.90.0000.0377.73
4.4.80.0030.0237.73
4.4.70.0070.0337.73
4.4.60.0030.0407.73
4.4.50.0000.0207.73
4.4.40.0030.0477.73
4.4.30.0030.0377.73
4.4.20.0000.0377.73
4.4.10.0030.0337.73
4.4.00.0030.0337.73
4.3.110.0070.0277.73
4.3.100.0070.0177.73
4.3.90.0070.0337.73
4.3.80.0000.0507.73
4.3.70.0030.0377.73
4.3.60.0030.0337.73
4.3.50.0030.0277.73
4.3.40.0030.0477.73
4.3.30.0000.0237.73
4.3.20.0030.0377.73
4.3.10.0000.0277.73
4.3.00.0030.0237.73

preferences:
46.61 ms | 400 KiB | 5 Q