3v4l.org

run code in 300+ PHP versions simultaneously
<?php $float = 0.0000000038; echo "float: $float\n"; $str = (string)$float; echo "string: $str\n"; $n_dec = strlen(substr(strrchr($str, '.'), 1)); echo "$n_dec\n"; echo number_format($float, $n_dec), "\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)
8.3.40.0090.00618.67
8.3.30.0110.00320.18
8.3.20.0070.00020.43
8.3.10.0040.00422.18
8.3.00.0040.00422.65
8.2.170.0120.00922.96
8.2.160.0100.00320.70
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0040.00421.00
8.2.110.0030.00622.37
8.2.100.0090.00317.91
8.2.90.0090.00019.09
8.2.80.0040.00419.45
8.2.70.0030.00617.61
8.2.60.0040.00417.92
8.2.50.0050.00318.07
8.2.40.0050.00320.07
8.2.30.0000.00819.46
8.2.20.0000.00717.75
8.2.10.0000.00717.98
8.2.00.0070.00317.81
8.1.270.0050.00323.99
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0090.00024.14
8.1.230.0040.00821.13
8.1.220.0080.00017.80
8.1.210.0050.00318.77
8.1.200.0090.00017.35
8.1.190.0050.00317.52
8.1.180.0040.00419.13
8.1.170.0080.00018.77
8.1.160.0000.00818.91
8.1.150.0050.00318.58
8.1.140.0050.00317.55
8.1.130.0070.00017.89
8.1.120.0070.00017.61
8.1.110.0030.00717.59
8.1.100.0060.00417.45
8.1.90.0000.00817.55
8.1.80.0020.00517.60
8.1.70.0030.00317.59
8.1.60.0060.00317.72
8.1.50.0040.00417.68
8.1.40.0030.00517.68
8.1.30.0030.00617.77
8.1.20.0000.00917.73
8.1.10.0000.00817.60
8.1.00.0000.00817.50
8.0.300.0040.00418.77
8.0.290.0050.00217.41
8.0.280.0040.00418.65
8.0.270.0000.00817.34
8.0.260.0030.00318.62
8.0.250.0000.00717.01
8.0.240.0000.00817.13
8.0.230.0040.00417.10
8.0.220.0030.00317.13
8.0.210.0040.00416.96
8.0.200.0030.00317.16
8.0.190.0050.00217.10
8.0.180.0000.00717.05
8.0.170.0030.00516.97
8.0.160.0070.00017.14
8.0.150.0030.00316.99
8.0.140.0000.00817.04
8.0.130.0050.00013.52
8.0.120.0040.00416.95
8.0.110.0000.00716.88
8.0.100.0050.00216.86
8.0.90.0070.00016.91
8.0.80.0060.00917.03
8.0.70.0000.00817.02
8.0.60.0040.00417.06
8.0.50.0000.00816.85
8.0.30.0080.01017.20
8.0.20.0110.00717.47
8.0.10.0040.00416.96
8.0.00.0080.01117.03
7.4.330.0060.00015.00
7.4.320.0040.00416.77
7.4.300.0030.00316.75
7.4.290.0000.00716.66
7.4.280.0040.00716.77
7.4.270.0000.00916.70
7.4.260.0050.00013.37
7.4.250.0040.00416.68
7.4.240.0000.00716.72
7.4.230.0000.00716.86
7.4.220.0170.01016.70
7.4.210.0100.00716.76
7.4.200.0000.00716.74
7.4.190.0070.00016.58
7.4.160.0100.01116.56
7.4.150.0080.01117.40
7.4.140.0110.00917.86
7.4.130.0140.00616.79
7.4.120.0130.00616.61
7.4.110.0040.01416.84
7.4.100.0190.00416.58
7.4.90.0120.00616.61
7.4.80.0090.01019.39
7.4.70.0090.01516.69
7.4.60.0100.00716.55
7.4.50.0000.00916.50
7.4.40.0030.01222.77
7.4.30.0100.00716.45
7.4.00.0060.01215.32
7.3.330.0000.00613.31
7.3.320.0030.00313.28
7.3.310.0040.00416.52
7.3.300.0060.00016.28
7.3.290.0100.01016.49
7.3.280.0080.00816.47
7.3.270.0130.00317.40
7.3.260.0070.01116.46
7.3.250.0120.00516.56
7.3.240.0070.01116.63
7.3.230.0070.01016.48
7.3.210.0160.00416.63
7.3.200.0040.01219.39
7.3.190.0150.01016.36
7.3.180.0060.00916.54
7.3.170.0140.00416.45
7.3.160.0100.00716.60
7.3.120.0070.00915.04
7.3.110.0100.00715.10
7.3.100.0020.01115.21
7.3.90.0070.00714.95
7.3.80.0100.00515.01
7.3.70.0090.00214.94
7.3.60.0040.00615.24
7.3.50.0050.00514.99
7.3.40.0060.00414.94
7.3.30.0040.00615.01
7.3.20.0060.00517.14
7.3.10.0050.00617.01
7.3.00.0070.00717.10
7.2.330.0120.00916.84
7.2.320.0120.01016.70
7.2.310.0130.00316.63
7.2.300.0030.01516.77
7.2.290.0060.01216.44
7.2.250.0090.01015.03
7.2.240.0060.01315.16
7.2.230.0070.00615.30
7.2.220.0030.00915.25
7.2.210.0070.00815.07
7.2.200.0100.00115.15
7.2.190.0090.00315.24
7.2.180.0030.01015.26
7.2.170.0050.00915.28
7.2.00.0040.00819.44
7.1.330.0100.00716.25
7.1.320.0040.01216.10
7.1.310.0050.00916.13
7.1.300.0070.00416.10
7.1.290.0080.00615.96
7.1.280.0060.00716.20
7.1.270.0030.00615.96
7.1.260.0050.00816.14
7.1.100.0150.00418.75
7.1.70.0050.00517.46
7.1.60.0100.00719.32
7.1.50.0030.01017.34
7.1.00.0100.06022.75
7.0.200.0000.00717.09
7.0.140.0100.06722.43
7.0.60.0230.07020.34
7.0.50.0030.08318.14
7.0.40.0100.06020.45
7.0.30.0200.05320.37
7.0.20.0330.07320.35
7.0.10.0100.03720.34
7.0.00.0030.04320.41
5.6.280.0000.07321.36
5.6.210.0130.08020.74
5.6.200.0030.08718.37
5.6.190.0170.07720.92
5.6.180.0200.09020.58
5.6.170.0230.08720.58
5.6.160.0030.04020.65
5.6.150.0130.07018.37
5.6.140.0130.07318.49
5.6.130.0170.07018.37
5.6.120.0000.04321.33
5.6.110.0070.04021.28
5.6.100.0270.04321.32
5.6.90.0200.06321.23
5.6.80.0030.08320.64
5.6.70.4470.04020.78
5.5.350.0130.08020.74
5.5.340.0030.04018.16
5.5.330.0030.08320.56
5.5.320.0070.06720.66
5.5.310.0330.07020.43
5.5.300.0070.07318.16
5.5.290.0100.05318.13
5.5.280.0000.07721.16
5.5.270.0100.03320.92
5.5.260.0100.08021.16
5.5.250.0070.08020.98
5.5.240.0130.07720.42
5.4.450.0100.04319.32
5.4.440.0100.06019.81
5.4.430.0170.07319.57
5.4.420.0070.04319.77
5.4.410.0130.05319.19
5.4.400.0170.07319.14
5.4.390.0130.07318.99
5.4.380.0230.07019.33
5.4.370.0170.07019.33
5.4.360.0200.05019.35
5.4.350.0230.06319.37
5.4.340.0200.07319.45
5.4.320.0070.06019.56
5.4.310.0300.03019.45
5.4.300.0200.06319.34
5.4.290.0170.08319.47
5.4.280.0130.05719.02
5.4.270.0300.04719.44
5.4.260.0170.04319.48
5.4.250.0170.07319.33
5.4.240.0100.05019.56
5.4.230.0200.03719.11
5.4.220.0100.06719.48
5.4.210.0170.06019.33
5.4.200.0170.07019.18
5.4.190.0200.06319.54
5.4.180.0170.07719.32
5.4.170.0100.05319.09
5.4.160.0170.07019.26
5.4.150.0130.07319.25
5.4.140.0130.03716.46
5.4.130.0170.07016.55
5.4.120.0230.06316.55
5.4.110.0170.04016.71
5.4.100.0300.03716.72
5.4.90.0200.05316.60
5.4.80.0130.03716.60
5.4.70.0100.04016.48
5.4.60.0170.07016.35
5.4.50.0200.06016.68
5.4.40.0200.04716.43
5.4.30.0230.03716.71
5.4.20.0270.06316.68
5.4.10.0070.04016.46
5.4.00.0230.06716.02
5.3.290.0170.04714.83
5.3.280.0170.04014.68
5.3.270.0100.05714.77
5.3.260.0100.04714.71
5.3.250.0170.07714.77
5.3.240.0130.04714.79
5.3.230.0070.07714.79
5.3.220.0200.07014.69
5.3.210.0200.04314.77
5.3.200.0130.04314.73
5.3.190.0130.05014.86
5.3.180.0130.08014.84
5.3.170.0170.05014.75
5.3.160.0200.04714.65
5.3.150.0170.07314.84
5.3.140.0170.06714.70
5.3.130.0170.04714.63
5.3.120.0100.04314.75
5.3.110.0200.04314.73
5.3.100.0130.03714.25
5.3.90.0230.03314.18
5.3.80.0230.03314.19
5.3.70.0200.06714.19
5.3.60.0130.05014.05
5.3.50.0230.07013.99
5.3.40.0130.07714.25
5.3.30.0130.07014.19
5.3.20.0170.07013.72
5.3.10.0130.04713.86
5.3.00.0230.06713.84
5.2.170.0200.05312.25
5.2.160.0200.05712.25
5.2.150.0200.05012.25
5.2.140.0030.04312.25
5.2.130.0130.02712.25
5.2.120.0130.02712.25
5.2.110.0170.06012.25
5.2.100.0130.04012.25
5.2.90.0130.03312.25
5.2.80.0100.04012.25
5.2.70.0170.02712.25
5.2.60.0130.02712.25
5.2.50.0070.03712.25
5.2.40.0070.03312.25
5.2.30.0000.03712.25
5.2.20.0130.02712.25
5.2.10.0030.03312.25
5.2.00.0100.02712.25
5.1.60.0070.03012.25
5.1.50.0100.02312.25
5.1.40.0100.02312.25
5.1.30.0100.02712.25
5.1.20.0030.03312.25
5.1.10.0100.03012.25
5.1.00.0070.02712.25
5.0.50.0070.01712.25
5.0.40.0070.01712.25
5.0.30.0030.03012.25
5.0.20.0030.02012.25
5.0.10.0100.01712.25
5.0.00.0030.03012.25
4.4.90.0070.01312.25
4.4.80.0030.01712.25
4.4.70.0030.01712.25
4.4.60.0000.02012.25
4.4.50.0070.01012.25
4.4.40.0070.02012.25
4.4.30.0030.01312.25
4.4.20.0030.02012.25
4.4.10.0070.01012.25
4.4.00.0070.02312.25
4.3.110.0030.01312.25
4.3.100.0070.01712.25
4.3.90.0030.01312.25
4.3.80.0030.02312.25
4.3.70.0030.01712.25
4.3.60.0100.01012.25
4.3.50.0030.01312.25
4.3.40.0100.01712.25
4.3.30.0030.01312.25
4.3.20.0030.01312.25
4.3.10.0030.01312.25
4.3.00.0030.01712.25

preferences:
43.17 ms | 400 KiB | 5 Q