3v4l.org

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

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)
8.3.60.0110.00718.32
8.3.50.0160.00521.99
8.3.40.0030.01318.51
8.3.30.0040.01119.00
8.3.20.0050.00320.09
8.3.10.0050.00223.51
8.3.00.0050.00319.08
8.2.180.0040.01118.02
8.2.170.0210.00022.96
8.2.160.0140.00020.39
8.2.150.0000.00724.18
8.2.140.0000.00724.66
8.2.130.0040.00426.16
8.2.120.0070.00020.91
8.2.110.0060.00321.91
8.2.100.0080.00320.54
8.2.90.0070.00018.92
8.2.80.0030.00617.97
8.2.70.0030.00617.63
8.2.60.0080.00017.93
8.2.50.0060.00318.07
8.2.40.0030.00719.82
8.2.30.0000.01018.08
8.2.20.0040.00417.60
8.2.10.0040.00418.05
8.2.00.0000.00717.67
8.1.280.0120.00325.92
8.1.270.0030.00623.96
8.1.260.0110.00426.35
8.1.250.0000.00828.09
8.1.240.0030.00622.06
8.1.230.0080.00419.09
8.1.220.0000.00817.74
8.1.210.0000.00918.77
8.1.200.0050.00517.35
8.1.190.0000.00817.22
8.1.180.0030.00518.10
8.1.170.0000.00818.36
8.1.160.0040.00421.90
8.1.150.0040.00418.57
8.1.140.0040.00717.24
8.1.130.0070.00017.82
8.1.120.0000.00817.27
8.1.110.0000.00717.36
8.1.100.0030.00317.28
8.1.90.0040.00417.23
8.1.80.0000.00717.32
8.1.70.0000.00717.25
8.1.60.0000.00817.58
8.1.50.0040.00417.36
8.1.40.0050.00217.45
8.1.30.0050.00317.63
8.1.20.0070.00017.54
8.1.10.0070.00017.48
8.1.00.0030.00617.33
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0030.00318.38
8.0.270.0080.00017.18
8.0.260.0000.00617.19
8.0.250.0000.00716.87
8.0.240.0000.00716.93
8.0.230.0000.00716.89
8.0.220.0070.00016.76
8.0.210.0000.00716.75
8.0.200.0030.00316.88
8.0.190.0000.00716.75
8.0.180.0040.00416.91
8.0.170.0000.00716.83
8.0.160.0050.00216.84
8.0.150.0030.00516.73
8.0.140.0040.00416.84
8.0.130.0000.00513.26
8.0.120.0040.00416.62
8.0.110.0040.00416.89
8.0.100.0040.00416.82
8.0.90.0050.00216.70
8.0.80.0130.00616.84
8.0.70.0040.00416.78
8.0.60.0050.00216.71
8.0.50.0070.00016.89
8.0.30.0090.01217.01
8.0.20.0120.00717.40
8.0.10.0040.00416.90
8.0.00.0130.00516.69
7.4.330.0020.00215.00
7.4.320.0000.00616.41
7.4.300.0060.00016.59
7.4.290.0030.00716.54
7.4.280.0030.00316.54
7.4.270.0000.00816.56
7.4.260.0000.00716.52
7.4.250.0040.00416.54
7.4.240.0020.00516.43
7.4.230.0030.00316.55
7.4.220.0060.01216.38
7.4.210.0030.01016.62
7.4.200.0030.00316.18
7.4.190.0000.00716.59
7.4.160.0030.01316.09
7.4.150.0040.01417.40
7.4.140.0080.01017.86
7.4.130.0170.00016.61
7.4.120.0160.00616.37
7.4.110.0100.01316.59
7.4.100.0000.01816.39
7.4.90.0070.01016.48
7.4.80.0120.00919.39
7.4.70.0130.00316.63
7.4.60.0130.00316.49
7.4.50.0080.00016.34
7.4.40.0000.02216.61
7.4.30.0080.00816.44
7.4.00.0130.00314.66
7.3.330.0070.00012.99
7.3.320.0060.00013.04
7.3.310.0070.00016.13
7.3.300.0000.00816.10
7.3.290.0100.01016.14
7.3.280.0080.01016.17
7.3.270.0100.00717.40
7.3.260.0090.00816.36
7.3.250.0130.00716.57
7.3.240.0150.00316.22
7.3.230.0080.00916.39
7.3.210.0000.01616.36
7.3.200.0060.01619.39
7.3.190.0040.01316.08
7.3.180.0100.00716.28
7.3.170.0090.00616.57
7.3.160.0070.01116.31
7.3.120.0030.01014.57
7.3.40.0000.02014.69
7.3.30.0130.00714.17
7.3.20.0250.00414.73
7.3.10.0300.00514.79
7.3.00.0150.00814.48
7.2.330.0070.01116.66
7.2.320.0090.00916.40
7.2.310.0100.01316.67
7.2.300.0080.00816.66
7.2.290.0170.00716.72
7.2.170.0100.00714.83
7.2.160.0000.01214.76
7.2.150.0290.01214.95
7.2.140.0340.00214.86
7.2.130.0860.00614.80
7.2.120.0510.01014.97
7.2.110.0270.00614.90
7.2.100.0290.01114.95
7.2.90.0300.01015.00
7.2.80.0320.01014.75
7.2.70.0320.00614.80
7.2.60.0180.00815.54
7.2.50.0250.00914.82
7.2.40.0250.00614.74
7.2.30.0240.00716.54
7.2.20.0240.00916.43
7.2.10.0300.01116.45
7.2.00.0120.01117.75
7.1.280.0150.01113.76
7.1.270.0100.01413.88
7.1.260.0120.00013.93
7.1.250.0350.00513.96
7.1.240.0300.01113.72
7.1.230.0330.01213.84
7.1.220.0350.01013.72
7.1.210.0400.00713.60
7.1.200.0260.00914.43
7.1.190.0280.01013.62
7.1.180.0350.00913.77
7.1.170.0290.01013.85
7.1.160.0420.01213.64
7.1.150.0210.01115.41
7.1.140.0270.00715.44
7.1.130.0450.00615.38
7.1.120.0170.01016.25
7.1.110.0190.00816.03
7.1.100.0180.00716.35
7.1.90.0210.01115.88
7.1.80.0240.01115.96
7.1.70.0130.01015.74
7.1.60.0170.01322.84
7.1.50.0190.01022.53
7.1.40.0210.01022.21
7.1.30.0210.01222.44
7.1.20.0190.01122.48
7.1.10.0150.01215.39
7.1.00.0230.00815.48
7.0.330.0300.00813.42
7.0.320.0290.00713.33
7.0.310.0360.00713.49
7.0.300.0350.00313.36
7.0.290.0260.01513.42
7.0.280.0300.00313.55
7.0.270.0240.00615.03
7.0.260.0150.01315.89
7.0.250.0160.01015.67
7.0.240.0180.01015.59
7.0.230.0220.00815.56
7.0.220.0250.00715.55
7.0.210.0180.00714.90
7.0.200.0160.00715.32
7.0.190.0140.01015.24
7.0.180.0180.00614.98
7.0.170.0160.00915.06
7.0.160.0180.00814.68
7.0.150.0220.00815.00
7.0.140.0210.00615.07
7.0.130.0270.01115.15
7.0.120.0210.00815.36
7.0.110.0200.00915.11
7.0.100.0180.00615.16
7.0.90.0230.00915.16
7.0.80.0190.00815.23
7.0.70.0180.00915.19
7.0.60.0160.01115.02
7.0.50.0140.01015.14
7.0.40.0260.00915.21
7.0.30.0160.01115.21
7.0.20.0120.00915.22
7.0.10.0180.01015.26
7.0.00.0130.00915.22
5.6.400.0140.01414.43
5.6.390.0120.00813.91
5.6.380.0100.01114.28
5.6.370.0210.01114.09
5.6.360.0160.00914.29
5.6.350.0140.00414.55
5.6.340.0190.00914.07
5.6.330.0120.01114.23
5.6.320.0180.00414.25
5.6.310.0120.00614.38
5.6.300.0160.04418.02
5.6.290.0130.03818.12
5.6.280.0110.03818.35
5.6.270.0130.03818.20
5.6.260.0130.04618.26
5.6.250.0170.03318.17
5.6.240.0100.05318.19
5.6.230.0150.04118.24
5.6.220.0140.04018.18
5.6.210.0160.04318.07
5.6.200.0180.04118.24
5.6.190.0160.03818.18
5.6.180.0130.03518.20
5.6.170.0120.03718.25
5.6.160.0100.04918.08
5.6.150.0110.04218.21
5.6.140.0140.04218.16
5.6.130.0140.03818.20
5.6.120.0150.04118.24
5.6.110.0110.05218.18
5.6.100.0110.03718.19
5.6.90.0120.03918.18
5.6.80.0120.03417.82
5.6.70.0130.03317.77
5.6.60.0090.04117.79
5.6.50.0110.04017.77
5.6.40.0130.03817.84
5.6.30.0130.03717.71
5.6.20.0140.03817.75
5.6.10.0130.03717.75
5.6.00.0130.03417.83
5.5.380.0110.03715.59
5.5.370.0120.04415.46
5.5.360.0130.04015.54
5.5.350.0110.03715.56
5.5.340.0170.03515.85
5.5.330.0120.04215.79
5.5.320.0130.03415.91
5.5.310.0150.03615.73
5.5.300.0120.03715.86
5.5.290.0130.03615.75
5.5.280.0140.03515.87
5.5.270.0120.04415.78
5.5.260.0160.03615.70
5.5.250.0130.03715.61
5.5.240.0110.03515.36
5.5.230.0090.03915.32
5.5.220.0090.04015.43
5.5.210.0110.03615.39
5.5.200.0110.03415.35
5.5.190.0100.04015.35
5.5.180.0130.03915.42
5.5.170.0100.01112.55
5.5.160.0110.03615.33
5.5.150.0140.03615.35
5.5.140.0140.03515.25
5.5.130.0140.03515.45
5.5.120.0100.03815.39
5.5.110.0120.04115.45
5.5.100.0100.04515.27
5.5.90.0110.04415.27
5.5.80.0080.03715.27
5.5.70.0090.03815.34
5.5.60.0130.03715.32
5.5.50.0140.03515.26
5.5.40.0110.03215.22
5.5.30.0130.03215.25
5.5.20.0110.03215.32
5.5.10.0110.03815.31
5.5.00.0110.03315.30
5.4.450.0110.04315.90
5.4.440.0080.03715.94
5.4.430.0150.03715.97
5.4.420.0130.03315.90
5.4.410.0100.03715.87
5.4.400.0110.03015.73
5.4.390.0080.03815.64
5.4.380.0120.03315.68
5.4.370.0120.03315.76
5.4.360.0110.03215.81
5.4.350.0100.03315.68
5.4.340.0090.04115.75
5.4.330.0120.00710.82
5.4.320.0110.03615.76
5.4.310.0140.03215.71
5.4.300.0100.03515.77
5.4.290.0080.03715.69
5.4.280.0100.03815.73
5.4.270.0120.03515.74
5.4.260.0150.03315.79
5.4.250.0130.04215.73
5.4.240.0160.03415.67
5.4.230.0110.03715.75
5.4.220.0160.03415.70
5.4.210.0120.03515.82
5.4.200.0100.03815.76
5.4.190.0130.03115.72
5.4.180.0110.03415.62
5.4.170.0100.03815.72
5.4.160.0100.03315.75
5.4.150.0120.03415.71
5.4.140.0110.03514.28
5.4.130.0120.03214.17
5.4.120.0100.04114.26
5.4.110.0080.03614.26
5.4.100.0120.03014.26
5.4.90.0090.02914.28
5.4.80.0090.03114.33
5.4.70.0100.03214.28
5.4.60.0130.03614.17
5.4.50.0100.04314.21
5.4.40.0110.03314.28
5.4.30.0090.03714.21
5.4.20.0160.02714.19
5.4.10.0120.04014.25
5.4.00.0090.04213.97
5.3.290.0110.03813.38
5.3.280.0110.03413.21
5.3.270.0110.03813.31
5.3.260.0100.04713.28
5.3.250.0130.03513.30
5.3.240.0110.03513.25
5.3.230.0130.03213.29
5.3.220.0090.03413.26
5.3.210.0070.04613.13
5.3.200.0110.03113.24
5.3.190.0070.03713.26
5.3.180.0140.03213.32
5.3.170.0120.03313.33
5.3.160.0120.03113.30
5.3.150.0090.03513.35
5.3.140.0110.03513.27
5.3.130.0110.02813.26
5.3.120.0110.04113.31
5.3.110.0110.03913.27
5.3.100.0090.03913.07
5.3.90.0100.04313.06
5.3.80.0130.03812.96
5.3.70.0080.03313.00
5.3.60.0100.03613.03
5.3.50.0120.03113.07
5.3.40.0080.03313.01
5.3.30.0100.03212.97
5.3.20.0090.03012.88
5.3.10.0110.03312.83
5.3.00.0120.03812.82

preferences:
45.09 ms | 401 KiB | 5 Q