3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'M2ZWUHlYMmVFY01rMg=='; echo $str, "\n"; $str2 = base64_decode($str); echo $str2, "\n"; $str3 = strrev($str2); echo $str3, "\n"; $str4 = base64_decode($str3 . '=='); echo $str4, "\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)
8.3.60.0190.00318.43
8.3.50.0130.00921.25
8.3.40.0110.00718.61
8.3.30.0150.00418.60
8.3.20.0040.00420.03
8.3.10.0000.00823.48
8.3.00.0050.00319.68
8.2.180.0150.00616.50
8.2.170.0030.01022.96
8.2.160.0100.00320.38
8.2.150.0000.00724.18
8.2.140.0130.00724.66
8.2.130.0040.00426.16
8.2.120.0080.00017.75
8.2.110.0050.00521.15
8.2.100.0060.00617.91
8.2.90.0030.00617.97
8.2.80.0080.00017.97
8.2.70.0000.00817.38
8.2.60.0000.00818.03
8.2.50.0040.00418.10
8.2.40.0070.00020.56
8.2.30.0000.00718.11
8.2.20.0040.00417.67
8.2.10.0040.00418.11
8.2.00.0000.00717.98
8.1.280.0070.01025.92
8.1.270.0070.00020.38
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0000.00922.18
8.1.230.0110.00022.72
8.1.220.0000.00817.78
8.1.210.0050.00518.85
8.1.200.0030.00717.23
8.1.190.0000.00817.22
8.1.180.0000.00818.10
8.1.170.0030.00618.54
8.1.160.0040.00422.16
8.1.150.0000.00818.87
8.1.140.0000.00817.36
8.1.130.0000.00717.64
8.1.120.0000.00817.30
8.1.110.0000.00717.37
8.1.100.0040.00417.44
8.1.90.0070.00017.39
8.1.80.0000.00717.26
8.1.70.0000.00717.26
8.1.60.0040.00417.42
8.1.50.0030.00617.44
8.1.40.0040.00417.32
8.1.30.0040.00417.59
8.1.20.0000.00817.62
8.1.10.0070.00017.39
8.1.00.0040.00417.48
8.0.300.0050.00219.64
8.0.290.0000.00716.75
8.0.280.0030.00318.34
8.0.270.0080.00017.12
8.0.260.0000.00617.25
8.0.250.0030.00416.93
8.0.240.0030.00316.96
8.0.230.0080.00316.82
8.0.220.0040.00416.85
8.0.210.0030.00316.86
8.0.200.0000.00617.00
8.0.190.0000.00916.97
8.0.180.0040.00416.77
8.0.170.0060.00316.88
8.0.160.0040.00416.98
8.0.150.0040.00416.71
8.0.140.0040.00416.73
8.0.130.0050.00013.30
8.0.120.0000.00816.82
8.0.110.0000.00816.91
8.0.100.0030.00316.91
8.0.90.0050.00316.87
8.0.80.0060.00916.79
8.0.70.0050.00216.85
8.0.60.0030.00316.79
8.0.50.0000.00716.79
8.0.30.0130.00417.13
8.0.20.0120.00917.40
8.0.10.0000.00717.00
8.0.00.0070.01316.59
7.4.330.0000.00515.08
7.4.320.0070.00016.42
7.4.300.0030.00316.58
7.4.290.0000.00716.51
7.4.280.0000.00716.42
7.4.270.0030.00316.34
7.4.260.0030.00316.49
7.4.250.0050.00316.46
7.4.240.0020.00616.48
7.4.230.0070.00016.32
7.4.220.0130.01316.48
7.4.210.0040.01116.45
7.4.200.0030.00316.64
7.4.160.0040.01216.52
7.4.150.0060.01217.40
7.4.140.0100.01417.86
7.4.130.0120.00616.38
7.4.120.0130.00516.34
7.4.110.0150.00416.43
7.4.100.0090.00916.41
7.4.90.0100.00716.43
7.4.80.0000.01819.39
7.4.70.0070.01016.49
7.4.60.0060.00916.40
7.4.50.0060.00316.26
7.4.40.0100.00616.44
7.4.30.0070.01016.21
7.4.00.0060.00914.63
7.3.330.0000.00512.89
7.3.320.0070.00012.95
7.3.310.0000.00716.02
7.3.300.0030.00316.23
7.3.290.0000.00616.14
7.3.280.0080.00916.20
7.3.270.0170.00017.40
7.3.260.0100.00716.18
7.3.250.0090.01116.31
7.3.240.0070.01016.40
7.3.230.0000.01816.39
7.3.210.0030.01316.36
7.3.200.0130.00316.33
7.3.190.0130.00316.65
7.3.180.0150.00616.18
7.3.170.0160.00016.60
7.3.160.0130.00416.46
7.3.10.0040.00816.64
7.3.00.0060.00616.46
7.2.330.0110.00816.66
7.2.320.0090.01216.50
7.2.310.0090.00916.63
7.2.300.0090.01216.62
7.2.290.0000.01616.41
7.2.130.0090.00616.88
7.2.120.0060.00616.93
7.2.110.0090.00616.70
7.2.100.0030.00716.96
7.2.90.0070.00716.89
7.2.80.0050.00516.88
7.2.70.0060.00816.63
7.2.60.0110.00316.99
7.2.50.0030.01016.91
7.2.40.0060.00617.12
7.2.30.0070.00716.68
7.2.20.0070.00716.79
7.2.10.0040.00716.96
7.2.00.0030.01118.24
7.1.250.0030.00715.94
7.1.200.0100.00315.60
7.1.100.0070.00418.34
7.1.70.0030.00717.29
7.1.60.0070.01719.17
7.1.50.0130.01016.98
7.1.00.0000.08022.54
7.0.200.0000.01016.95
7.0.60.0030.09019.86
7.0.50.0070.06717.88
7.0.40.0030.09320.03
7.0.30.0500.04720.09
7.0.20.0330.06020.12
7.0.10.0000.05320.00
7.0.00.0170.07720.13
5.6.280.0000.07320.86
5.6.210.0130.06720.49
5.6.200.0000.04718.18
5.6.190.0070.04020.56
5.6.180.0100.04720.43
5.6.170.0230.03320.46
5.6.160.0070.03720.37
5.6.150.0070.06318.22
5.6.140.0130.07718.15
5.6.130.0100.07718.11
5.6.120.0030.04021.00
5.6.110.0130.05721.03
5.6.100.0100.08020.88
5.6.90.0130.07720.91
5.6.80.0070.08020.38
5.6.70.3870.03720.41
5.5.350.0270.07720.31
5.5.340.0070.06318.00
5.5.330.0130.03320.21
5.5.320.0130.08720.30
5.5.310.0270.07020.41
5.5.300.0130.07317.98
5.5.290.0030.04317.95
5.5.280.0030.08320.87
5.5.270.0030.04020.86
5.5.260.0030.04020.86
5.5.250.0030.04020.77
5.5.240.0200.07320.18
5.4.450.0700.06319.54
5.4.440.0900.05719.54
5.4.430.1100.04019.57
5.4.420.0870.06319.56
5.4.410.1070.04019.43
5.4.400.1030.04718.79
5.4.390.0930.05018.99
5.4.380.0900.05019.06
5.4.370.0870.05319.22
5.4.360.1030.04019.09
5.4.350.0900.05019.24
5.4.340.0900.06319.18
5.4.320.0870.05719.24
5.4.310.0930.04719.02
5.4.300.0900.05018.79
5.4.290.0970.04319.21
5.4.280.0900.05319.20
5.4.270.1000.06318.77
5.4.260.0830.05718.98
5.4.250.0930.05719.15
5.4.240.0830.06319.01
5.4.230.0700.06019.23
5.4.220.0830.05319.20
5.4.210.0870.06019.18
5.4.200.0730.05018.76
5.4.190.0700.05719.18
5.4.180.0930.06318.76
5.4.170.1070.05019.20
5.4.160.0870.05319.20
5.4.150.1030.04318.96
5.4.140.0800.04716.18
5.4.130.0870.05016.32
5.4.120.0930.05716.31
5.4.110.0670.05316.40
5.4.100.0700.06016.29
5.4.90.0900.04316.43
5.4.80.0870.05316.16
5.4.70.0270.03316.44
5.4.60.0230.06316.20
5.4.50.0030.07016.04
5.4.40.0000.07016.36
5.4.30.0030.05316.40
5.4.20.0070.05016.36

preferences:
56.34 ms | 401 KiB | 5 Q