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(27);

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)
8.3.60.0130.01018.41
8.3.50.0160.00521.21
8.3.40.0100.00718.84
8.3.30.0110.00419.04
8.3.20.0070.00020.33
8.3.10.0040.00423.73
8.3.00.0030.00619.13
8.2.180.0110.00716.63
8.2.170.0090.01222.96
8.2.160.0100.00720.57
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00422.12
8.2.110.0000.01020.95
8.2.100.0160.00417.70
8.2.90.0000.00817.63
8.2.80.0080.00018.61
8.2.70.0000.00817.63
8.2.60.0040.00417.80
8.2.50.0080.00018.07
8.2.40.0040.00419.82
8.2.30.0050.00318.07
8.2.20.0050.00217.70
8.2.10.0000.00818.13
8.2.00.0000.00917.80
8.1.280.0120.00625.92
8.1.270.0030.00524.02
8.1.260.0040.00426.35
8.1.250.0050.00228.09
8.1.240.0070.01023.97
8.1.230.0050.00518.95
8.1.220.0000.00917.74
8.1.210.0040.00418.77
8.1.200.0030.00517.24
8.1.190.0050.00317.23
8.1.180.0000.00718.10
8.1.170.0050.00318.46
8.1.160.0040.00422.05
8.1.150.0030.00618.93
8.1.140.0040.00417.45
8.1.130.0040.00417.82
8.1.120.0000.00817.43
8.1.110.0040.00417.50
8.1.100.0040.00417.44
8.1.90.0000.00717.41
8.1.80.0050.00317.44
8.1.70.0000.00717.44
8.1.60.0050.00517.59
8.1.50.0000.00917.54
8.1.40.0000.00717.49
8.1.30.0040.00417.48
8.1.20.0070.00017.71
8.1.10.0000.00717.36
8.1.00.0040.00417.45
8.0.300.0000.00818.78
8.0.290.0040.00416.75
8.0.280.0070.00018.51
8.0.270.0030.00317.18
8.0.260.0000.00717.29
8.0.250.0070.00016.93
8.0.240.0030.00316.95
8.0.230.0040.00416.97
8.0.220.0030.00316.88
8.0.210.0070.00016.92
8.0.200.0040.00416.88
8.0.190.0030.00616.93
8.0.180.0000.00716.95
8.0.170.0000.00716.78
8.0.160.0030.00516.78
8.0.150.0040.00416.80
8.0.140.0000.00716.87
8.0.130.0000.00613.41
8.0.120.0040.00416.87
8.0.110.0040.00416.88
8.0.100.0050.00316.79
8.0.90.0000.00716.87
8.0.80.0110.01116.80
8.0.70.0000.00716.84
8.0.60.0050.00316.84
8.0.50.0070.00016.66
8.0.30.0080.01117.04
8.0.20.0130.01117.40
8.0.10.0030.00516.98
8.0.00.0100.00816.78
7.4.330.0030.00315.02
7.4.320.0080.00016.43
7.4.300.0030.00316.49
7.4.290.0030.00316.60
7.4.280.0000.00916.43
7.4.270.0040.00416.61
7.4.260.0000.00816.61
7.4.250.0000.00716.48
7.4.240.0020.00516.52
7.4.230.0030.00316.58
7.4.220.0030.01616.56
7.4.210.0090.00616.62
7.4.200.0000.00716.62
7.4.160.0060.01016.50
7.4.150.0170.00917.40
7.4.140.0090.01117.86
7.4.130.0150.00616.48
7.4.120.0070.01016.55
7.4.110.0100.00716.50
7.4.100.0120.00616.50
7.4.90.0080.00916.59
7.4.80.0130.01019.39
7.4.70.0080.00916.64
7.4.60.0100.00716.50
7.4.50.0050.00016.42
7.4.40.0030.01416.48
7.4.30.0130.01016.72
7.4.10.0070.01115.00
7.4.00.0060.01014.76
7.3.330.0030.00313.37
7.3.320.0050.00013.35
7.3.310.0000.00616.46
7.3.300.0000.00716.41
7.3.290.0090.00816.39
7.3.280.0150.00316.33
7.3.270.0090.00917.40
7.3.260.0140.00316.63
7.3.250.0160.00216.50
7.3.240.0070.01016.43
7.3.230.0070.01316.39
7.3.210.0100.00716.38
7.3.200.0130.01019.39
7.3.190.0080.01516.57
7.3.180.0080.00816.56
7.3.170.0060.01016.44
7.3.160.0100.00616.53
7.3.130.0110.00514.73
7.3.120.0090.00914.84
7.3.110.0040.01215.05
7.3.100.0020.01414.79
7.3.90.0080.00714.75
7.3.80.0030.00814.85
7.3.70.0060.00614.97
7.3.60.0100.00614.81
7.3.50.0070.00814.86
7.3.40.0020.00914.83
7.3.30.0020.01114.94
7.3.20.0080.00516.76
7.3.10.0060.00916.72
7.3.00.0100.00416.69
7.2.330.0070.01016.32
7.2.320.0170.00716.50
7.2.310.0000.01716.31
7.2.300.0150.00916.39
7.2.290.0060.01116.63
7.2.260.0070.01315.21
7.2.250.0070.01215.25
7.2.240.0030.01314.88
7.2.230.0050.01014.94
7.2.220.0080.00615.23
7.2.210.0050.00714.77
7.2.200.0070.00915.04
7.2.190.0060.00914.89
7.2.180.0020.01014.87
7.2.170.0080.00514.87
7.2.160.0060.01014.87
7.2.150.0050.00916.82
7.2.140.0020.01216.77
7.2.130.0030.00616.70
7.2.120.0060.00416.76
7.2.110.0050.00816.96
7.2.100.0070.00916.85
7.2.90.0030.01316.94
7.2.80.0060.00516.77
7.2.70.0060.00916.80
7.2.60.0050.01016.85
7.2.50.0060.00916.59
7.2.40.0070.00317.11
7.2.30.0090.00616.77
7.2.20.0050.01016.88
7.2.10.0030.01016.77
7.2.00.0030.00817.52
7.1.330.0080.00515.72
7.1.320.0070.00315.86
7.1.310.0000.01315.80
7.1.300.0060.00815.80
7.1.290.0040.00715.78
7.1.280.0080.00515.79
7.1.270.0020.01015.61
7.1.260.0030.00915.90
7.1.250.0070.00615.75
7.1.240.0050.00615.73
7.1.230.0070.00715.83
7.1.220.0050.01015.85
7.1.210.0080.00315.94
7.1.200.0040.00715.89
7.1.190.0040.00615.85
7.1.180.0040.00915.83
7.1.170.0060.00515.78
7.1.160.0030.00515.81
7.1.150.0020.00615.84
7.1.140.0070.00715.93
7.1.130.0010.00915.77
7.1.120.0060.00715.86
7.1.110.0030.00715.84
7.1.100.0070.00816.53
7.1.90.0050.01015.65
7.1.80.0020.00815.86
7.1.70.0050.00916.20
7.1.60.0070.00716.84
7.1.50.0080.00916.12
7.1.40.0080.00315.82
7.1.30.0100.00515.62
7.1.20.0030.01015.88
7.1.10.0040.00915.60
7.1.00.0040.03017.93
7.0.330.0060.00615.49
7.0.320.0020.00815.30
7.0.310.0080.00415.50
7.0.300.0040.00915.54
7.0.290.0020.00915.30
7.0.280.0040.00715.51
7.0.270.0050.00315.50
7.0.260.0020.00815.51
7.0.250.0030.00815.35
7.0.240.0080.00315.44
7.0.230.0070.00815.61
7.0.220.0060.00615.44
7.0.210.0070.00515.44
7.0.200.0040.00515.99
7.0.190.0030.01215.53
7.0.180.0020.01115.44
7.0.170.0070.00815.41
7.0.160.0050.00815.50
7.0.150.0030.00915.55
7.0.140.0030.02717.65
7.0.130.0060.00815.61
7.0.120.0020.00815.50
7.0.110.0070.00615.45
7.0.100.0000.01615.46
7.0.90.0000.01415.37
7.0.80.0030.00815.63
7.0.70.0070.00715.40
7.0.60.0070.03016.89
7.0.50.0060.03316.35
7.0.40.0040.02015.72
7.0.30.0130.01715.66
7.0.20.0110.01815.70
7.0.10.0100.03015.75
7.0.00.0030.03815.60
5.6.400.0060.00614.52
5.6.390.0070.00514.45
5.6.380.0060.01014.16
5.6.370.0060.00814.49
5.6.360.0040.00914.21
5.6.350.0060.00614.59
5.6.340.0090.00314.25
5.6.330.0070.00614.18
5.6.320.0060.00514.30
5.6.310.0020.01314.31
5.6.300.0070.00614.05
5.6.290.0090.00614.51
5.6.280.0090.02716.50
5.6.270.0080.00414.47
5.6.260.0100.00314.44
5.6.250.0050.00714.52
5.6.240.0070.00914.37
5.6.230.0040.00614.29
5.6.220.0060.00414.47
5.6.210.0090.02916.38
5.6.200.0050.03415.61
5.6.190.0020.02316.40
5.6.180.0130.01916.46
5.6.170.0100.02316.42
5.6.160.0070.02116.26
5.6.150.0090.02915.41
5.6.140.0090.03115.59
5.6.130.0080.03215.71
5.6.120.0040.02216.60
5.6.110.0050.02516.56
5.6.100.0070.01616.45
5.6.90.0080.03116.50
5.6.80.0080.02616.27
5.6.70.1070.01416.31
5.6.60.0090.00714.33
5.6.50.0030.01314.22
5.6.40.0030.00914.25
5.6.30.0060.00914.35
5.6.20.0070.00814.16
5.6.10.0030.01314.15
5.6.00.0040.00914.46
5.5.380.0050.00814.26
5.5.370.0050.01014.39
5.5.360.0020.01014.32
5.5.350.0100.03116.42
5.5.340.0050.02915.43
5.5.330.0030.02316.44
5.5.320.0150.03016.34
5.5.310.0150.02716.43
5.5.300.0020.03715.48
5.5.290.0040.03315.47
5.5.280.0070.02116.30
5.5.270.0060.02116.37
5.5.260.0060.03016.35
5.5.250.0100.02616.37
5.5.240.0150.02816.26
5.5.230.0040.00814.00
5.5.220.0050.00714.21
5.5.210.0050.00414.21
5.5.200.0040.01114.08
5.5.190.0040.01114.20
5.5.180.0040.00914.10
5.5.170.0050.00814.28
5.5.160.0060.00714.37
5.5.150.0030.01214.04
5.5.140.0060.00813.98
5.5.130.0090.00714.28
5.5.120.0030.00714.05
5.5.110.0050.00714.01
5.5.100.0040.00914.24
5.5.90.0050.00814.21
5.5.80.0050.00614.21
5.5.70.0030.00714.06
5.5.60.0070.00813.97
5.5.50.0030.00814.23
5.5.40.0020.01114.21
5.5.30.0030.00813.80
5.5.20.0050.00614.28
5.5.10.0050.00914.13
5.5.00.0020.01114.10
5.4.450.0080.02114.17
5.4.440.0310.02414.28
5.4.430.0100.02014.37
5.4.420.0250.00314.29
5.4.410.0220.00614.20
5.4.400.0240.00414.17
5.4.390.0260.00414.24
5.4.380.0300.00314.09
5.4.370.0220.00414.07
5.4.360.0260.00514.13
5.4.350.0240.00614.14
5.4.340.0060.01711.78
5.4.330.0050.00611.73
5.4.320.0060.01711.91
5.4.310.0060.01711.98
5.4.300.0050.01812.01
5.4.290.0070.01511.94
5.4.280.0060.01711.88
5.4.270.0090.02611.99
5.4.260.0040.02111.81
5.4.250.0050.02111.95
5.4.240.0100.01611.82
5.4.230.0060.02212.00
5.4.220.0040.02111.91
5.4.210.0090.01611.96
5.4.200.0080.01611.97
5.4.190.0060.02111.90
5.4.180.0080.01811.81
5.4.170.0050.01811.89
5.4.160.0040.02111.78
5.4.150.0040.02011.88
5.4.140.0050.01511.80
5.4.130.0050.01811.82
5.4.120.0060.02011.80
5.4.110.0050.01911.82
5.4.100.0010.02011.73
5.4.90.0040.02211.73
5.4.80.0060.02211.66
5.4.70.0060.01811.74
5.4.60.0050.01911.76
5.4.50.0030.02011.83
5.4.40.0060.01611.67
5.4.30.0040.01711.65
5.4.20.0080.01411.73
5.4.10.0020.02211.71
5.4.00.0050.02011.60
5.3.290.0050.05712.80
5.3.280.0050.05312.71
5.3.270.0070.05612.72
5.3.260.0060.05812.72
5.3.250.0150.04612.72
5.3.240.0110.05212.72
5.3.230.0060.05312.71
5.3.220.0080.05212.68
5.3.210.0070.05512.68
5.3.200.0100.05012.68
5.3.190.0060.05112.68
5.3.180.0060.05212.68
5.3.170.0120.04912.67
5.3.160.0070.05012.67
5.3.150.0060.05512.67
5.3.140.0090.05112.66
5.3.130.0090.05312.66
5.3.120.0080.05412.66
5.3.110.0060.05512.66
5.3.100.0110.04212.12
5.3.90.0110.04312.10
5.3.80.0050.04412.09
5.3.70.0120.04112.09
5.3.60.0080.04712.07
5.3.50.0060.04712.02
5.3.40.0070.04512.02
5.3.30.0100.03911.97
5.3.20.0090.04311.77
5.3.10.0050.04411.73
5.3.00.0090.04011.71
5.2.170.0040.0409.21
5.2.160.0060.0359.21
5.2.150.0060.0359.21
5.2.140.0060.0309.21
5.2.130.0050.0349.17
5.2.120.0060.0329.17
5.2.110.0090.0319.18
5.2.100.0050.0349.18
5.2.90.0030.0399.18
5.2.80.0050.0379.16
5.2.70.0060.0349.17
5.2.60.0060.0379.12
5.2.50.0070.0379.10
5.2.40.0050.0329.07
5.2.30.0070.0349.04
5.2.20.0020.0389.03
5.2.10.0050.0328.94
5.2.00.0060.0458.80
5.1.60.0050.0298.08
5.1.50.0100.0298.08
5.1.40.0050.0358.06
5.1.30.0050.0378.41
5.1.20.0070.0388.43
5.1.10.0110.0378.15
5.1.00.0090.0448.16
5.0.50.0070.0386.63
5.0.40.0050.0266.50
5.0.30.0060.0426.31
5.0.20.0080.0266.28
5.0.10.0040.0286.25
5.0.00.0080.0386.25
4.4.90.0060.0194.78
4.4.80.0040.0184.75
4.4.70.0070.0164.76
4.4.60.0060.0184.75
4.4.50.0040.0204.77
4.4.40.0030.0354.71
4.4.30.0050.0154.76
4.4.20.0030.0234.85
4.4.10.0030.0164.85
4.4.00.0070.0304.76
4.3.110.0060.0174.67
4.3.100.0010.0194.66
4.3.90.0050.0154.64
4.3.80.0040.0244.58
4.3.70.0020.0154.63
4.3.60.0030.0194.63
4.3.50.0030.0224.63
4.3.40.0050.0264.54
4.3.30.0020.0173.30
4.3.20.0030.0163.28
4.3.10.0000.0183.24
4.3.00.0070.0176.64

preferences:
41.99 ms | 401 KiB | 5 Q