3v4l.org

run code in 300+ PHP versions simultaneously
<?php $classmap1 = array(); for ($i=1; $i<=5000; $i++) { $classmap1['a'.$i] = $i+1; } $classmap2 = array(); for ($i=1; $i<=5000; $i++) { $classmap2['b'.$i] = $i+1; } $startTimeFunc = microtime(true); array_merge($classmap1, $classmap2); $endTimeFunc = microtime(true); echo "Func took " . (($endTimeFunc - $startTimeFunc)*1000) ." microseconds<br />\n";

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)
7.4.10.0130.01017.65
7.4.00.0050.01316.68
7.3.130.0130.00717.52
7.3.120.0050.01616.65
7.3.110.0100.00816.72
7.3.100.0050.01216.72
7.3.90.0130.00316.68
7.3.80.0110.00716.71
7.3.70.0080.00916.59
7.3.60.0020.01316.60
7.3.50.0070.01116.48
7.3.40.0030.01016.63
7.3.30.0050.00916.81
7.3.20.0110.00319.18
7.3.10.0040.01219.12
7.3.00.0050.01119.22
7.2.260.0040.01817.73
7.2.250.0120.01017.10
7.2.240.0110.00816.83
7.2.230.0050.01516.76
7.2.220.0060.01016.75
7.2.210.0060.01016.94
7.2.200.0030.01316.85
7.2.190.0050.01016.81
7.2.180.0090.00416.86
7.2.170.0090.00716.80
7.2.160.0070.00717.49
7.2.150.0070.01020.46
7.2.140.0060.00620.46
7.2.130.0040.01120.33
7.2.120.0110.00720.30
7.2.110.0100.00620.35
7.2.100.0030.00920.43
7.2.90.0110.00720.30
7.2.80.0100.00720.31
7.2.70.0070.00720.32
7.2.60.0030.01420.41
7.2.50.0040.00820.21
7.2.40.0040.00820.23
7.2.30.0040.01120.28
7.2.20.0080.00820.30
7.2.10.0070.01020.32
7.2.00.0040.01220.82
7.1.330.0080.01018.79
7.1.320.0030.01418.58
7.1.310.0070.01018.55
7.1.300.0060.00918.58
7.1.290.0030.01018.53
7.1.280.0030.01218.58
7.1.270.0060.01118.43
7.1.260.0080.00818.64
7.1.250.0070.01019.43
7.1.240.0030.01319.20
7.1.230.0000.01119.36
7.1.220.0100.00319.37
7.1.210.0110.00719.20
7.1.200.0030.01319.24
7.1.190.0070.01119.32
7.1.180.0000.01719.40
7.1.170.0130.00719.21
7.1.160.0080.00419.29
7.1.150.0040.01419.24
7.1.140.0070.01019.21
7.1.130.0080.00619.28
7.1.120.0100.00719.25
7.1.110.0070.01019.37
7.1.100.0090.00619.07
7.1.90.0110.00919.39
7.1.80.0040.01419.26
7.1.70.0070.00419.28
7.1.60.0070.01019.40
7.1.50.0050.01519.11
7.1.40.0040.00819.38
7.1.30.0110.00719.18
7.1.20.0030.01419.32
7.1.10.0060.01319.47
7.1.00.0030.04321.74
7.0.330.0060.01019.14
7.0.320.0000.01419.03
7.0.310.0000.02019.09
7.0.300.0130.00719.07
7.0.290.0070.00419.08
7.0.280.0040.01118.98
7.0.270.0050.00518.82
7.0.260.0100.00718.96
7.0.250.0000.01119.12
7.0.240.0060.00919.11
7.0.230.0040.01119.16
7.0.220.0150.00019.11
7.0.210.0090.00619.14
7.0.200.0460.00817.81
7.0.190.0030.01319.29
7.0.180.0030.01419.06
7.0.170.0110.00419.04
7.0.160.0100.00319.10
7.0.150.0100.00719.05
7.0.140.0130.03321.58
7.0.130.0090.00919.18
7.0.120.0100.00618.99
7.0.110.0090.00919.02
7.0.100.0070.04720.25
7.0.90.0220.04820.24
7.0.80.0310.04820.26
7.0.70.0270.04120.11
7.0.60.0100.04020.21
7.0.50.0130.04920.37
7.0.40.0030.03217.53
7.0.30.0080.03817.58
7.0.20.0080.04817.58
7.0.10.0100.04617.54
7.0.00.0050.03517.50
5.6.400.0030.02118.64
5.6.390.0110.01118.48
5.6.380.0090.01218.59
5.6.370.0110.01418.58
5.6.360.0060.00918.27
5.6.350.0080.01118.59
5.6.340.0030.01318.64
5.6.330.0090.00918.29
5.6.320.0060.01218.25
5.6.310.0070.01718.77
5.6.300.0090.01218.70
5.6.290.0060.01618.75
5.6.280.0030.04821.14
5.6.270.0000.01618.29
5.6.260.0070.00718.34
5.6.250.0100.04820.97
5.6.240.0040.05320.87
5.6.230.0080.03820.99
5.6.220.0090.04420.82
5.6.210.0120.05320.85
5.6.200.0100.05020.96
5.6.190.0080.04320.90
5.6.180.0100.04621.11
5.6.170.0070.04020.95
5.6.160.0080.03321.09
5.6.150.0070.04720.98
5.6.140.0090.02920.99
5.6.130.0030.03621.05
5.6.120.0050.05121.21
5.6.110.0000.05721.12
5.6.100.0150.03121.07
5.6.90.0150.03921.07
5.6.80.0130.04520.61
5.6.70.0080.04620.79
5.6.60.0070.05320.70
5.6.50.0080.04420.81
5.6.40.0130.03520.63
5.6.30.0100.02820.71
5.6.20.0100.04420.59
5.6.10.0050.05220.78
5.6.00.0100.04820.70
5.5.380.0130.04320.66
5.5.370.0020.05220.77
5.5.360.0080.04620.81
5.5.350.0090.04620.69
5.5.340.0100.04020.73
5.5.330.0050.05120.96
5.5.320.0120.04520.87
5.5.310.0080.04820.94
5.5.300.0100.04820.94
5.5.290.0080.04820.78
5.5.280.0040.03820.85
5.5.270.0080.03720.89
5.5.260.0150.03220.99
5.5.250.0110.04320.77
5.5.240.0120.04820.59
5.5.230.0030.03620.57
5.5.220.0140.04120.55
5.5.210.0030.03720.59
5.5.200.0100.04720.55
5.5.190.0080.04720.47
5.5.180.0120.03820.53
5.5.170.0090.01218.36
5.5.160.0120.04220.56
5.5.150.0110.04820.43
5.5.140.0000.05120.52
5.5.130.0140.04220.58
5.5.120.0080.03920.59
5.5.110.0090.04820.63
5.5.100.0070.05020.46
5.5.90.0050.03220.47
5.5.80.0030.04820.58
5.5.70.0030.05520.54
5.5.60.0000.04920.41
5.5.50.0090.04621.69
5.5.40.0060.02621.54
5.5.30.0050.05021.46
5.5.20.0080.05021.52
5.5.10.0090.04921.48
5.5.00.0120.04721.52
5.4.450.0080.05019.48
5.4.440.0080.05019.58
5.4.430.0050.05119.58
5.4.420.0070.04719.41
5.4.410.0050.03719.49
5.4.400.0080.05319.26
5.4.390.0030.04819.16
5.4.380.0070.04419.36
5.4.370.0120.04519.32
5.4.360.0070.05219.30
5.4.350.0050.05219.25
5.4.340.0090.04619.31
5.4.330.0000.02116.00
5.4.320.0120.04519.37
5.4.310.0080.04719.39
5.4.300.0080.04219.18
5.4.290.0070.05019.42
5.4.280.0080.04019.32
5.4.270.0100.03719.27
5.4.260.0080.04519.31
5.4.250.0110.04319.31
5.4.240.0080.03919.37
5.4.230.0130.03719.21
5.4.220.0020.04119.20
5.4.210.0020.03419.24
5.4.200.0030.05119.19
5.4.190.0030.04919.40
5.4.180.0050.03519.43
5.4.170.0100.04619.13
5.4.160.0020.03719.37
5.4.150.0070.04319.26
5.4.140.0090.02818.06
5.4.130.0050.05317.84
5.4.120.0070.04617.96
5.4.110.0050.04217.90
5.4.100.0140.04117.95
5.4.90.0070.05018.01
5.4.80.0040.04718.14
5.4.70.0050.04118.05
5.4.60.0080.03017.94
5.4.50.0070.04118.04
5.4.40.0070.03217.91
5.4.30.0080.04718.03
5.4.20.0080.04618.01
5.4.10.0130.04418.07
5.4.00.0100.03717.70
5.3.290.0030.05016.92
5.3.280.0080.04616.84
5.3.270.0030.05416.95
5.3.260.0080.04316.84
5.3.250.0070.04016.88
5.3.240.0100.03816.82
5.3.230.0100.04316.89
5.3.220.0030.05616.79
5.3.210.0120.04316.75
5.3.200.0070.04516.83
5.3.190.0110.04316.78
5.3.180.0050.04516.96
5.3.170.0080.03916.81
5.3.160.0020.03316.93
5.3.150.0100.04016.98
5.3.140.0030.05216.82
5.3.130.0120.04316.82
5.3.120.0100.04116.80
5.3.110.0050.05016.89
5.3.100.0100.04516.64
5.3.90.0120.04516.64
5.3.80.0030.04016.37
5.3.70.0080.04616.41
5.3.60.0110.04116.47
5.3.50.0030.05216.50
5.3.40.0030.04916.40
5.3.30.0030.04916.44
5.3.20.0030.04916.32
5.3.10.0070.04716.19
5.3.00.0070.02315.15
5.2.170.0130.06014.17
5.2.160.0070.06314.00
5.2.150.0030.06714.10
5.2.140.0070.07014.21
5.2.130.0000.06714.16
5.2.120.0070.06714.15
5.2.110.0030.07014.15
5.2.100.0030.06314.00
5.2.90.0100.06714.02
5.2.80.0030.07314.11
5.2.70.0100.05314.10
5.2.60.0070.05314.13
5.2.50.0130.05713.91
5.2.40.0070.07313.96
5.2.30.0070.06313.89
5.2.20.0030.07314.10
5.2.10.0070.03713.98
5.2.00.0070.05713.76
5.1.60.0070.06013.91
5.1.50.0070.06313.98
5.1.40.0070.05313.85
5.1.30.0130.06014.31
5.1.20.0070.05314.25
5.1.10.0030.06714.02
5.1.00.0070.06313.87
5.0.50.0030.05012.62
5.0.40.0000.04312.48
5.0.30.0100.03312.29
5.0.20.0000.06012.25
5.0.10.0030.02712.21
5.0.00.0030.03712.14
4.4.90.0070.0379.81
4.4.80.0000.0479.88
4.4.70.0000.0479.95
4.4.60.0030.0509.90
4.4.50.0070.0279.84
4.4.40.0000.0609.84
4.4.30.0000.0539.87
4.4.20.0070.0439.83
4.4.10.0070.0439.95
4.4.00.0070.0579.89
4.3.110.0030.0309.78
4.3.100.0000.0339.81
4.3.90.0030.0409.73
4.3.80.0000.0609.71
4.3.70.0030.0209.81
4.3.60.0000.0279.74
4.3.50.0000.0239.90
4.3.40.0070.0279.85
4.3.30.0030.0208.95
4.3.20.0030.0208.95
4.3.10.0000.0238.95
4.3.00.0000.0338.95

preferences:
40.95 ms | 401 KiB | 5 Q