3v4l.org

run code in 300+ PHP versions simultaneously
<?php function num2alpha($n) { for($r = ""; $n >= 0; $n = intval($n / 26) - 1) $r = chr($n%26 + 0x41) . $r; return $r; } echo num2alpha(33);

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)
8.3.60.0100.01018.18
8.3.50.0090.01316.49
8.3.40.0070.00718.54
8.3.30.0070.00719.08
8.3.20.0050.00220.35
8.3.10.0040.00423.64
8.3.00.0050.00318.99
8.2.180.0110.00716.38
8.2.170.0080.00622.96
8.2.160.0070.01020.38
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0050.00319.36
8.2.110.0090.00022.23
8.2.100.0080.00417.75
8.2.90.0040.00419.17
8.2.80.0050.00317.97
8.2.70.0080.00017.50
8.2.60.0080.00017.80
8.2.50.0040.00418.07
8.2.40.0000.00819.82
8.2.30.0080.00017.89
8.2.20.0000.00817.61
8.2.10.0050.00218.23
8.2.00.0080.00017.74
8.1.280.0110.00325.92
8.1.270.0040.00423.84
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0070.00323.86
8.1.230.0070.00419.16
8.1.220.0040.00417.91
8.1.210.0000.00718.77
8.1.200.0030.00617.10
8.1.190.0080.00017.35
8.1.180.0000.00818.10
8.1.170.0060.00318.53
8.1.160.0040.00421.98
8.1.150.0040.00418.89
8.1.140.0000.00817.36
8.1.130.0000.00817.70
8.1.120.0040.00417.39
8.1.110.0040.00417.45
8.1.100.0040.00417.45
8.1.90.0000.00717.31
8.1.80.0000.00717.36
8.1.70.0070.00017.38
8.1.60.0040.00417.60
8.1.50.0050.00317.50
8.1.40.0070.00017.50
8.1.30.0050.00317.65
8.1.20.0040.00417.58
8.1.10.0000.00717.52
8.1.00.0000.00717.45
8.0.300.0040.00418.77
8.0.290.0000.00716.75
8.0.280.0070.00018.51
8.0.270.0000.00717.16
8.0.260.0030.00317.13
8.0.250.0000.00716.91
8.0.240.0040.00416.84
8.0.230.0060.00316.94
8.0.220.0050.00316.79
8.0.210.0000.00716.96
8.0.200.0070.00016.94
8.0.190.0030.00516.86
8.0.180.0000.00716.98
8.0.170.0040.00416.84
8.0.160.0050.00316.79
8.0.150.0050.00316.84
8.0.140.0080.00016.72
8.0.130.0000.00613.27
8.0.120.0040.00416.84
8.0.110.0050.00316.96
8.0.100.0040.00416.90
8.0.90.0000.00716.78
8.0.80.0090.00916.91
8.0.70.0000.00716.79
8.0.60.0030.00416.89
8.0.50.0030.00316.77
8.0.30.0110.01217.12
8.0.20.0120.01217.40
8.0.10.0040.00416.81
8.0.00.0070.01016.79
7.4.330.0040.00015.02
7.4.320.0000.00616.63
7.4.300.0030.00316.55
7.4.290.0070.00016.52
7.4.280.0000.01116.50
7.4.270.0070.00016.53
7.4.260.0040.00416.50
7.4.250.0040.00416.48
7.4.240.0020.00516.48
7.4.230.0070.00016.49
7.4.220.0070.01016.64
7.4.210.0090.00916.54
7.4.200.0000.00716.62
7.4.160.0090.00616.35
7.4.150.0150.00317.40
7.4.140.0120.00717.86
7.4.130.0130.00616.45
7.4.120.0090.00916.47
7.4.110.0060.01016.40
7.4.100.0060.01216.56
7.4.90.0030.01416.32
7.4.80.0170.00019.39
7.4.70.0110.00616.63
7.4.60.0060.01216.49
7.4.50.0050.00316.36
7.4.40.0140.00316.63
7.4.30.0100.01016.55
7.4.00.0030.01114.79
7.3.330.0000.00613.32
7.3.320.0050.00013.23
7.3.310.0070.00016.32
7.3.300.0070.00016.26
7.3.290.0070.00716.35
7.3.280.0090.00716.37
7.3.270.0070.01017.40
7.3.260.0100.00716.49
7.3.250.0100.00716.41
7.3.240.0080.00816.27
7.3.230.0060.01216.39
7.3.210.0100.00716.47
7.3.200.0070.01419.39
7.3.190.0120.00616.28
7.3.180.0080.01416.65
7.3.170.0130.00616.36
7.3.160.0100.00616.32
7.3.120.0080.00314.74
7.3.110.0070.01014.84
7.3.100.0000.01414.61
7.3.90.0040.00414.98
7.3.80.0090.00614.51
7.3.70.0030.00614.73
7.3.60.0060.00614.55
7.3.50.0090.00614.44
7.3.40.0030.00614.70
7.3.30.0030.00914.51
7.3.20.0060.00716.84
7.3.10.0090.00616.65
7.3.00.0060.01216.62
7.2.330.0090.00916.80
7.2.320.0140.00616.76
7.2.310.0070.01016.63
7.2.300.0000.01716.47
7.2.290.0120.00816.61
7.2.250.0110.00815.04
7.2.240.0000.01514.92
7.2.230.0000.01415.16
7.2.220.0030.00915.16
7.2.210.0060.01014.74
7.2.200.0040.00714.84
7.2.190.0060.00615.18
7.2.180.0120.00615.03
7.2.170.0060.00615.11
7.2.00.0090.00919.40
7.1.330.0090.00615.85
7.1.320.0000.01315.86
7.1.310.0040.01115.74
7.1.300.0040.00715.48
7.1.290.0000.00915.87
7.1.280.0090.00315.84
7.1.270.0040.01115.74
7.1.260.0120.00315.65
7.1.100.0060.00618.07
7.1.70.0040.01117.29
7.1.60.0030.01719.11
7.1.50.0150.00916.92
7.1.00.0030.07722.29
7.0.200.0050.00316.81
7.0.140.0000.07722.00
7.0.60.0100.07719.98
7.0.50.0100.08317.85
7.0.40.0030.04720.13
7.0.30.0270.05020.25
7.0.20.0200.07020.10
7.0.10.0100.04020.26
7.0.00.0330.03020.09
5.6.280.0170.06320.95
5.6.210.0100.07020.69
5.6.200.0070.07718.27
5.6.190.0030.06320.67
5.6.180.0300.04320.57
5.6.170.0200.05320.58
5.6.160.0030.06020.47
5.6.150.0030.05718.19
5.6.140.0000.08318.24
5.6.130.0030.05718.17
5.6.120.0000.05021.13
5.6.110.0070.09021.02
5.6.100.0130.08020.91
5.6.90.0100.04720.98
5.6.80.0070.04020.45
5.6.70.4530.03320.50
5.5.350.0130.08020.40
5.5.340.0070.03317.96
5.5.330.0170.06020.41
5.5.320.0230.03720.29
5.5.310.0200.03720.37
5.5.300.0070.05018.02
5.5.290.0070.04017.94
5.5.280.0030.04020.87
5.5.270.0170.07020.67
5.5.260.0130.05020.84
5.5.250.0030.05720.66
5.5.240.0200.07320.18
5.4.450.0430.07019.57
5.4.440.0600.06019.57
5.4.430.0970.05019.47
5.4.420.0770.00019.67
5.4.410.0600.00019.41
5.4.400.0630.00019.07
5.4.390.0600.00019.06
5.4.380.0630.00019.13
5.4.370.0830.00019.13
5.4.360.0630.00019.08
5.4.350.0630.00019.09
5.4.340.0090.03812.01
5.4.320.0050.03812.50
5.4.310.0070.04312.50
5.4.300.0110.04712.50
5.4.290.0090.04112.50
5.4.280.0070.03812.40
5.4.270.0070.03712.40
5.4.260.0190.08812.39
5.4.250.0160.13712.40
5.4.240.0100.06912.39
5.4.230.0160.06512.39
5.4.220.0160.07712.39
5.4.210.0090.04712.39
5.4.200.0190.08312.39
5.4.190.0080.03812.39
5.4.180.0160.04512.39
5.4.170.0070.04712.39
5.4.160.0080.04212.39
5.4.150.0060.04912.39
5.4.140.0140.05212.07
5.4.130.0120.04712.06
5.4.120.0110.04112.01
5.4.110.0060.06012.02
5.4.100.0150.08012.01
5.4.90.0070.07612.02
5.4.80.0170.07512.01
5.4.70.0110.04612.01
5.4.60.0080.04612.01
5.4.50.0090.04712.01
5.4.40.0070.04912.00
5.4.30.0110.06511.99
5.4.20.0090.04712.00
5.4.10.0060.04912.00
5.4.00.0210.08911.48
5.3.290.0120.07012.80
5.3.280.0110.03712.71
5.3.270.0180.05612.72
5.3.260.0110.05212.71
5.3.250.0080.03912.72
5.3.240.0100.04612.72
5.3.230.0150.05512.71
5.3.220.0070.04112.68
5.3.210.0060.04312.68
5.3.200.0090.03412.68
5.3.190.0040.04712.68
5.3.180.0110.04112.67
5.3.170.0100.04912.67
5.3.160.0090.05112.67
5.3.150.0130.04712.67
5.3.140.0050.04012.66
5.3.130.0090.03712.66
5.3.120.0060.04212.66
5.3.110.0090.05112.66
5.3.100.0170.07112.12
5.3.90.0090.04212.10
5.3.80.0110.05812.09
5.3.70.0100.04112.09
5.3.60.0060.04612.08
5.3.50.0150.06912.02
5.3.40.0080.04512.02
5.3.30.0170.08011.97
5.3.20.0160.06211.77
5.3.10.0130.04211.73
5.3.00.0160.08811.71
5.2.170.0100.0319.21
5.2.160.0050.0369.21
5.2.150.0100.0479.21
5.2.140.0060.0319.21
5.2.130.0050.0309.17
5.2.120.0090.0459.17
5.2.110.0090.0399.18
5.2.100.0080.0439.18
5.2.90.0050.0419.17
5.2.80.0060.0389.16
5.2.70.0060.0309.17
5.2.60.0090.0269.12
5.2.50.0070.0419.09
5.2.40.0070.0279.07
5.2.30.0070.0299.04
5.2.20.0060.0309.04
5.2.10.0050.0298.94
5.2.00.0070.0318.80
5.1.60.0070.0218.08
5.1.50.0070.0238.08
5.1.40.0030.0288.06
5.1.30.0040.0338.41
5.1.20.0050.0378.43
5.1.10.0030.0278.16
5.1.00.0060.0328.16
5.0.50.0080.0186.64
5.0.40.0050.0186.50
5.0.30.0040.0326.30
5.0.20.0040.0196.28
5.0.10.0060.0186.26
5.0.00.0060.0286.25
4.4.90.0040.0144.78
4.4.80.0050.0144.75
4.4.70.0040.0144.76
4.4.60.0030.0154.76
4.4.50.0010.0174.77
4.4.40.0020.0264.71
4.4.30.0050.0154.76
4.4.20.0050.0164.85
4.4.10.0030.0184.84
4.4.00.0030.0454.76
4.3.110.0030.0154.67
4.3.100.0040.0374.66
4.3.90.0030.0154.63
4.3.80.0010.0274.59
4.3.70.0010.0184.63
4.3.60.0030.0144.63
4.3.50.0020.0174.63
4.3.40.0060.0214.54
4.3.30.0020.0173.30
4.3.20.0030.0173.28
4.3.10.0010.0173.24
4.3.00.0100.0276.64

preferences:
53.04 ms | 400 KiB | 5 Q