3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ar = array('q'=>1, 'w'=>2, 'e'=>3); $ak = array_keys($ar); unset($ak['w']); print_r($ak);

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)
8.3.60.0070.00718.30
8.3.50.0060.01321.99
8.3.40.0070.01418.90
8.3.30.0070.00719.04
8.3.20.0040.01120.39
8.3.10.0040.00421.60
8.3.00.0080.00017.79
8.2.180.0120.00916.63
8.2.170.0070.01322.96
8.2.160.0070.00720.35
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0190.00026.16
8.2.120.0070.00020.88
8.2.110.0090.00020.47
8.2.100.0080.00317.91
8.2.90.0000.00819.22
8.2.80.0080.00017.97
8.2.70.0040.00417.63
8.2.60.0000.00717.93
8.2.50.0000.00918.07
8.2.40.0040.00418.20
8.2.30.0060.00318.00
8.2.20.0050.00217.55
8.2.10.0000.00818.03
8.2.00.0040.00417.78
8.1.280.0100.01025.92
8.1.270.0060.00323.96
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0050.00523.86
8.1.230.0070.00319.09
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0040.00717.35
8.1.190.0000.00817.23
8.1.180.0080.00018.10
8.1.170.0000.00818.54
8.1.160.0070.00021.86
8.1.150.0040.00418.77
8.1.140.0060.00317.29
8.1.130.0000.00717.77
8.1.120.0070.00017.26
8.1.110.0050.00317.36
8.1.100.0070.00017.31
8.1.90.0030.00417.29
8.1.80.0000.00717.44
8.1.70.0080.00017.30
8.1.60.0040.00417.44
8.1.50.0000.00817.43
8.1.40.0000.00717.34
8.1.30.0000.00817.58
8.1.20.0000.00817.41
8.1.10.0000.00917.47
8.1.00.0000.00817.46
8.0.300.0070.00018.77
8.0.290.0040.00416.75
8.0.280.0030.00318.27
8.0.270.0040.00417.12
8.0.260.0030.00317.18
8.0.250.0050.00216.79
8.0.240.0030.00516.75
8.0.230.0050.00316.93
8.0.220.0040.00416.86
8.0.210.0030.00316.72
8.0.200.0040.00416.92
8.0.190.0040.00416.89
8.0.180.0040.00416.90
8.0.170.0080.00016.86
8.0.160.0000.00716.92
8.0.150.0000.00716.81
8.0.140.0040.00416.74
8.0.130.0000.00513.23
8.0.120.0000.00816.83
8.0.110.0050.00216.78
8.0.100.0050.00216.63
8.0.90.0000.00816.87
8.0.80.0060.00916.77
8.0.70.0040.00416.67
8.0.60.0030.00516.72
8.0.50.0040.00416.88
8.0.30.0110.00817.08
8.0.20.0090.00917.40
8.0.10.0000.00716.78
8.0.00.0090.00816.65
7.4.330.0050.00015.00
7.4.320.0000.00716.64
7.4.300.0030.00316.48
7.4.290.0000.01116.51
7.4.280.0050.00516.63
7.4.270.0000.00716.59
7.4.260.0000.00716.41
7.4.250.0040.00316.56
7.4.240.0020.00516.62
7.4.230.0030.00516.59
7.4.220.0140.00316.60
7.4.210.0040.01116.62
7.4.200.0040.00416.64
7.4.160.0030.01316.50
7.4.150.0120.00617.40
7.4.140.0050.01317.86
7.4.130.0080.00916.45
7.4.120.0110.00616.39
7.4.110.0070.01116.54
7.4.100.0040.01316.41
7.4.90.0060.01316.52
7.4.80.0090.00819.39
7.4.70.0120.00616.45
7.4.60.0160.00016.33
7.4.50.0030.00316.50
7.4.40.0100.00716.33
7.4.30.0160.00016.37
7.4.00.0070.01014.81
7.3.330.0060.00013.11
7.3.320.0000.00613.12
7.3.310.0040.00416.13
7.3.300.0040.00216.18
7.3.290.0060.01316.11
7.3.280.0080.00916.17
7.3.270.0120.00617.40
7.3.260.0120.01116.44
7.3.250.0140.00716.33
7.3.240.0000.01616.46
7.3.230.0090.00916.39
7.3.210.0100.00616.21
7.3.200.0070.01019.39
7.3.190.0130.00316.21
7.3.180.0130.00616.22
7.3.170.0100.00616.27
7.3.160.0160.00016.34
7.3.120.0060.00614.46
7.2.330.0150.00416.68
7.2.320.0090.00916.61
7.2.310.0060.01016.73
7.2.300.0140.00316.44
7.2.290.0100.00616.73
7.2.00.0040.01418.88
7.1.200.0210.00715.74
7.1.100.0000.01118.16
7.1.70.0060.00317.02
7.1.60.0110.01119.25
7.1.50.0120.00617.08
7.1.00.0070.07322.37
7.0.200.0000.00716.84
7.0.140.0030.07322.15
7.0.60.0200.07319.93
7.0.50.0070.06717.83
7.0.40.0170.07319.96
7.0.30.0170.04320.11
7.0.20.0200.06320.26
7.0.10.0030.09020.23
7.0.00.0170.06320.09
5.6.280.0100.06721.09
5.6.210.0000.08720.74
5.6.200.0100.03318.18
5.6.190.0070.04320.62
5.6.180.0270.06720.48
5.6.170.0270.08020.71
5.6.160.0200.06720.54
5.6.150.0070.08318.29
5.6.140.0030.08718.11
5.6.130.0070.07018.13
5.6.120.0000.04320.98
5.6.110.0070.03721.12
5.6.100.0170.07721.04
5.6.90.0070.07321.09
5.6.80.0000.07020.43
5.5.350.0000.06320.40
5.5.340.0070.05018.03
5.5.330.0030.04720.42
5.5.320.3630.04720.23
5.5.310.0370.07020.41
5.5.300.0100.07718.03
5.5.290.0030.06318.06
5.5.280.0130.05320.86
5.5.270.0000.04320.62
5.5.260.0030.09020.86
5.5.250.0170.05720.68
5.5.240.0030.08020.03
5.4.450.2000.03719.56
5.4.440.2070.04719.46
5.4.430.2130.04019.39
5.4.420.1970.04019.47
5.4.410.2230.05019.43
5.4.400.2030.04319.31
5.4.390.2170.03319.21
5.4.380.1770.04319.14
5.4.370.2200.03019.09
5.4.360.2070.04019.16
5.4.350.2230.03718.84
5.4.340.2030.04319.21
5.4.320.2170.03319.08
5.4.310.1870.03718.99
5.4.300.1830.04019.21
5.4.290.2130.04319.21
5.4.280.2130.04718.97
5.4.270.1900.03319.30
5.4.260.2170.04319.12
5.4.250.2070.05019.20
5.4.240.2100.04319.05
5.4.230.1500.04319.15
5.4.220.2100.04319.05
5.4.210.2200.03318.85
5.4.200.2170.04319.15
5.4.190.2100.04318.96
5.4.180.2070.04319.07
5.4.170.2130.03719.18
5.4.160.1900.03018.98
5.4.150.2070.04318.84
5.4.140.1900.03316.35
5.4.130.2130.04016.41
5.4.120.2200.04316.38
5.4.110.2030.03316.36
5.4.100.2200.03716.55
5.4.90.1970.03016.35
5.4.80.1900.04716.52
5.4.70.2070.04316.54
5.4.60.1900.03316.53
5.4.50.2130.02716.50
5.4.40.2130.04316.55
5.4.30.2000.03716.55
5.4.20.1970.03016.55
5.4.10.1970.04016.55
5.4.00.2230.04715.83
5.3.290.2000.03314.80
5.3.280.2070.04014.66
5.3.270.2000.04714.74
5.3.260.1870.04014.50
5.3.250.2000.03314.49
5.3.240.1900.03714.65
5.3.230.2030.03014.73
5.3.220.1970.04014.53
5.3.210.2300.04014.65
5.3.200.1970.04314.63
5.3.190.1830.03714.69
5.3.180.1800.03314.61
5.3.170.1930.03714.52
5.3.160.2000.03714.70
5.3.150.1900.04314.52
5.3.140.1870.03714.53
5.3.130.2130.04014.52
5.3.120.2600.04014.54
5.3.110.2530.04014.43
5.3.100.2400.03014.03
5.3.90.2130.04014.00
5.3.80.2500.03313.98
5.3.70.2300.04013.94
5.3.60.2430.04013.93
5.3.50.2430.03713.85
5.3.40.2470.03713.84
5.3.30.2170.03314.12
5.3.20.2170.03713.69
5.3.10.2500.03713.88
5.3.00.2500.03713.78
5.2.170.2100.03011.07
5.2.160.2170.03311.06
5.2.150.2130.03311.22
5.2.140.2130.03011.07
5.2.130.2200.02711.00
5.2.120.2200.03011.17
5.2.110.1770.03310.97
5.2.100.2230.03011.00
5.2.90.2130.03311.02
5.2.80.1830.02711.02
5.2.70.1970.02711.16
5.2.60.1930.02711.05
5.2.50.1930.03011.15
5.2.40.1830.03311.06
5.2.30.1770.03010.87
5.2.20.1600.03011.09
5.2.10.1600.03010.77
5.2.00.1170.03710.71
5.1.60.1230.0309.92
5.1.50.1000.0279.92
5.1.40.1530.03010.10
5.1.30.1470.02710.51
5.1.20.1270.02710.32
5.1.10.1570.03010.04
5.1.00.1270.0279.96
5.0.50.0670.0208.39
5.0.40.0630.0208.33
5.0.30.0600.0338.23
5.0.20.0630.0208.10
5.0.10.0630.0208.24
5.0.00.0630.0308.06
4.4.90.0730.0207.98
4.4.80.0730.0207.98
4.4.70.0670.0137.98
4.4.60.0700.0107.98
4.4.50.0930.0207.98
4.4.40.0630.0277.98
4.4.30.0630.0137.98
4.4.20.0630.0207.98
4.4.10.0670.0177.98
4.4.00.0700.0237.98
4.3.110.0630.0137.98
4.3.100.0770.0177.98
4.3.90.0630.0137.98
4.3.80.0670.0237.98
4.3.70.0630.0137.98
4.3.60.0770.0277.98
4.3.50.0630.0207.98
4.3.40.0630.0237.98
4.3.30.0330.0207.98
4.3.20.0300.0177.98
4.3.10.0330.0177.98
4.3.00.0370.0237.98

preferences:
39.79 ms | 401 KiB | 5 Q