3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array(0 => 100, "color" => "red"); $keys = array_keys($array); //print_r($keys[0]); echo $keys; ?>

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)
8.3.60.0060.01016.63
8.3.50.0100.01221.86
8.3.40.0110.01118.81
8.3.30.0030.01018.92
8.3.20.0030.00520.20
8.3.10.0080.00021.74
8.3.00.0000.00820.75
8.2.180.0120.00318.29
8.2.170.0100.00722.96
8.2.160.0110.00319.21
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0070.00019.66
8.2.110.0090.00020.57
8.2.100.0110.00018.09
8.2.90.0080.00018.99
8.2.80.0040.00417.97
8.2.70.0090.00017.63
8.2.60.0040.00417.80
8.2.50.0080.00018.07
8.2.40.0030.00619.75
8.2.30.0070.00018.11
8.2.20.0090.00017.67
8.2.10.0040.00417.97
8.2.00.0000.00717.82
8.1.280.0070.01425.92
8.1.270.0060.00320.70
8.1.260.0050.00326.35
8.1.250.0000.00728.09
8.1.240.0060.00323.79
8.1.230.0040.00819.10
8.1.220.0020.00517.78
8.1.210.0050.00318.77
8.1.200.0060.00317.00
8.1.190.0040.00417.10
8.1.180.0000.00818.10
8.1.170.0040.00418.57
8.1.160.0050.00321.93
8.1.150.0040.00418.88
8.1.140.0030.00617.42
8.1.130.0040.00417.86
8.1.120.0050.00317.29
8.1.110.0040.00417.41
8.1.100.0000.00717.28
8.1.90.0060.00317.27
8.1.80.0000.00717.40
8.1.70.0080.00017.44
8.1.60.0000.00817.41
8.1.50.0000.00817.46
8.1.40.0000.00717.46
8.1.30.0030.00617.55
8.1.20.0040.00417.47
8.1.10.0050.00317.48
8.1.00.0000.00717.32
8.0.300.0050.00218.77
8.0.290.0040.00416.88
8.0.280.0060.00318.43
8.0.270.0040.00417.16
8.0.260.0000.00617.25
8.0.250.0040.00416.89
8.0.240.0020.00517.00
8.0.230.0030.00516.95
8.0.220.0070.00016.84
8.0.210.0030.00316.75
8.0.200.0060.00016.91
8.0.190.0040.00416.81
8.0.180.0050.00216.83
8.0.170.0080.00016.88
8.0.160.0000.00716.90
8.0.150.0000.00816.80
8.0.140.0080.00016.75
8.0.130.0030.00313.31
8.0.120.0040.00416.75
8.0.110.0030.00416.73
8.0.100.0000.00717.00
8.0.90.0000.00716.90
8.0.80.0060.00916.83
8.0.70.0040.00416.93
8.0.60.0070.00016.94
8.0.50.0050.00216.77
8.0.30.0120.00816.87
8.0.20.0080.01417.40
8.0.10.0040.00417.06
8.0.00.0150.00316.82
7.4.330.0000.00515.08
7.4.320.0030.00316.52
7.4.300.0070.00016.32
7.4.290.0000.00716.50
7.4.280.0030.00716.50
7.4.270.0030.00316.56
7.4.260.0070.00016.34
7.4.250.0030.00316.29
7.4.240.0020.00516.47
7.4.230.0040.00416.60
7.4.220.0070.01116.38
7.4.210.0070.01416.56
7.4.200.0030.00516.41
7.4.160.0090.00616.45
7.4.150.0150.00417.40
7.4.140.0100.01017.86
7.4.130.0130.00416.50
7.4.120.0090.01016.46
7.4.110.0140.00316.45
7.4.100.0120.00616.54
7.4.90.0100.01016.25
7.4.80.0070.01216.28
7.4.70.0120.00616.20
7.4.60.0080.00816.54
7.4.50.0000.00816.29
7.4.40.0100.00716.33
7.4.30.0120.00616.41
7.4.00.0090.00714.92
7.3.330.0050.00013.10
7.3.320.0000.01313.02
7.3.310.0070.00016.27
7.3.300.0030.00316.20
7.3.290.0060.00816.22
7.3.280.0140.00516.30
7.3.270.0070.01017.40
7.3.260.0100.00716.33
7.3.250.0090.01216.29
7.3.240.0150.00016.27
7.3.230.0110.00616.48
7.3.210.0060.01316.24
7.3.200.0070.01319.39
7.3.190.0080.00816.29
7.3.180.0130.00316.27
7.3.170.0040.01316.36
7.3.160.0140.01016.34
7.3.120.0070.01114.52
7.3.110.0110.00314.80
7.3.100.0110.00414.73
7.3.90.0090.00914.77
7.3.80.0110.00314.48
7.3.70.0100.00314.75
7.3.60.0100.00314.78
7.3.50.0000.01414.75
7.3.40.0090.00614.46
7.3.30.0120.00314.52
7.3.20.0030.00916.70
7.3.10.0130.00516.47
7.3.00.0150.00116.51
7.2.330.0120.01216.27
7.2.320.0130.00316.61
7.2.310.0190.00616.73
7.2.300.0130.00916.75
7.2.290.0110.01116.39
7.2.250.0070.01114.46
7.2.240.0060.01014.82
7.2.230.0000.01214.58
7.2.220.0110.00014.82
7.2.210.0090.00614.79
7.2.200.0060.01314.71
7.2.190.0090.00314.74
7.2.180.0060.00915.08
7.2.170.0070.01015.07
7.2.130.0250.00416.79
7.2.120.0290.00716.29
7.2.110.0150.00616.00
7.2.100.0280.00316.59
7.2.90.0210.01116.26
7.2.80.0160.01016.28
7.2.70.0210.00416.22
7.2.60.0130.00616.55
7.2.50.0230.00216.44
7.2.40.0250.00916.40
7.2.30.0180.00015.90
7.2.20.0120.00616.57
7.2.10.0290.01016.28
7.2.00.0070.00818.10
7.1.330.0000.01315.83
7.1.320.0050.00515.76
7.1.310.0060.00615.67
7.1.300.0030.00915.82
7.1.290.0090.00615.84
7.1.280.0060.01015.53
7.1.270.0070.01116.02
7.1.260.0090.00315.72
7.1.250.0130.01015.49
7.1.200.0070.01015.82
7.1.100.0050.00818.04
7.1.70.0090.00017.22
7.1.60.0130.01019.46
7.1.50.0040.01816.77
7.1.00.0070.07322.33
7.0.200.0050.00316.71
7.0.140.0030.06322.06
7.0.60.0070.08319.92
7.0.50.0170.07017.89
7.0.40.0130.08720.20
7.0.30.0500.07720.30
7.0.20.0300.04720.21
7.0.10.0100.05320.23
7.0.00.0070.06020.20
5.6.280.0030.07320.86
5.6.210.0030.05720.70
5.6.200.0070.03718.11
5.6.190.0030.06020.64
5.6.180.0270.05020.60
5.6.170.0230.05020.48
5.6.160.0100.08020.39
5.6.150.0070.03718.14
5.6.140.0030.04318.12
5.6.130.0130.05718.20
5.6.120.0200.07021.09
5.6.110.0000.05720.95
5.6.100.0170.06321.02
5.6.90.0030.08320.97
5.6.80.0130.04720.38
5.6.70.3570.02720.42
5.5.350.0030.08020.37
5.5.340.0070.08317.98
5.5.330.0070.04320.36
5.5.320.0170.05320.28
5.5.310.0300.06020.32
5.5.300.0030.05017.87
5.5.290.0170.07017.91
5.5.280.0100.06720.68
5.5.270.0100.08020.92
5.5.260.0030.04320.75
5.5.250.0030.04020.67
5.5.240.0300.03020.27
5.4.450.0570.07019.48
5.4.440.0870.05019.47
5.4.430.0870.05719.56
5.4.420.0130.05319.09
5.4.410.1170.04719.34
5.4.400.0870.06019.09
5.4.390.0170.04318.66
5.4.380.0070.05318.69
5.4.370.0070.05318.71
5.4.360.0100.05318.68
5.4.350.0030.05718.57
5.4.340.0130.04318.52
5.4.320.0030.05718.71
5.4.310.0130.04718.68
5.4.300.0000.06318.73
5.4.290.0100.05718.68
5.4.280.0100.05318.58
5.4.270.0030.06018.69
5.4.260.0030.05318.48
5.4.250.0030.06018.79
5.4.240.0000.06318.62
5.4.230.0130.06318.55
5.4.220.0100.05018.51
5.4.210.0130.06718.71
5.4.200.0100.06316.66
5.4.190.0070.06718.67
5.4.180.0170.04318.60
5.4.170.0030.05718.71
5.4.160.0200.03718.68
5.4.150.0030.05318.70
5.4.140.0000.05716.17
5.4.130.0130.04716.29
5.4.120.0100.04316.21
5.4.110.0100.05716.21
5.4.100.0070.05016.07
5.4.90.0100.05316.08
5.4.80.0070.04716.14
5.4.70.0130.04716.23
5.4.60.0070.04716.12
5.4.50.0100.05016.18
5.4.40.0000.05716.05
5.4.30.0070.04716.01
5.4.20.0130.04716.13
5.4.10.0030.05016.04
5.4.00.0070.05715.68
5.3.290.0130.04714.57
5.3.280.0030.05314.48
5.3.270.0100.05314.57
5.3.260.0100.04714.51
5.3.250.0170.04314.60
5.3.240.0100.05014.49
5.3.230.0070.05314.48
5.3.220.0130.04314.53
5.3.210.0070.05314.54
5.3.200.0070.05014.66
5.3.190.0070.05314.65
5.3.180.0100.04714.56
5.3.170.0100.05014.61
5.3.160.0030.05314.59
5.3.150.0070.05014.55
5.3.140.0030.05714.54
5.3.130.0070.06014.47
5.3.120.0070.05314.54
5.3.110.0070.05014.57
5.3.100.0130.04714.02
5.3.90.0070.05314.00
5.3.80.0130.05713.94
5.3.70.0000.05313.96
5.3.60.0100.04314.10
5.3.50.0030.05013.89
5.3.40.0070.04713.98
5.3.30.0070.04713.84
5.3.20.0170.03713.68
5.3.10.0000.05313.64
5.3.00.0000.05313.55
5.2.170.0030.04011.06
5.2.160.0030.04311.09
5.2.150.0030.04311.11
5.2.140.0030.04311.09
5.2.130.0030.04011.03
5.2.120.0000.04311.06
5.2.110.0070.04011.14
5.2.100.0070.03711.06
5.2.90.0100.03711.27
5.2.80.0100.03711.08
5.2.70.0000.04711.04
5.2.60.0070.04011.04
5.2.50.0000.04710.96
5.2.40.0030.04311.13
5.2.30.0030.04310.88
5.2.20.0100.03710.93
5.2.10.0130.03010.99
5.2.00.0070.05010.79
5.1.60.0000.03710.05
5.1.50.0030.0339.98
5.1.40.0000.03710.11
5.1.30.0000.04010.34
5.1.20.0100.03010.39
5.1.10.0030.03710.11
5.1.00.0170.03010.13
5.0.50.0100.0308.51
5.0.40.0030.0378.38
5.0.30.0000.0578.36
5.0.20.0000.0308.23
5.0.10.0000.0308.20
5.0.00.0030.0438.36
4.4.90.0000.0275.95
4.4.80.0030.0205.89
4.4.70.0030.0205.90
4.4.60.0030.0205.85
4.4.50.0030.0275.87
4.4.40.0000.0405.89
4.4.30.0070.0205.93
4.4.20.0070.0235.95
4.4.10.0100.0205.97
4.4.00.0000.0375.96
4.3.110.0030.0205.82
4.3.100.0030.0205.79
4.3.90.0000.0305.80
4.3.80.0030.0405.80
4.3.70.0070.0235.79
4.3.60.0030.0275.84
4.3.50.0000.0305.86
4.3.40.0030.0335.75
4.3.30.0000.0304.72
4.3.20.0070.0174.72
4.3.10.0000.0234.72
4.3.00.0000.01314.62

preferences:
57.25 ms | 401 KiB | 5 Q