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"; $str4 = base64_decode($str3 . '='); echo $str4, "\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)
8.3.60.0090.00618.30
8.3.50.0120.00616.23
8.3.40.0140.00318.47
8.3.30.0150.00318.68
8.3.20.0000.00720.20
8.3.10.0040.00423.52
8.3.00.0050.00319.56
8.2.180.0110.00716.50
8.2.170.0110.00422.96
8.2.160.0110.00720.52
8.2.150.0040.00424.18
8.2.140.0070.00724.66
8.2.130.0040.00426.16
8.2.120.0090.00017.63
8.2.110.0040.00419.30
8.2.100.0070.00717.63
8.2.90.0040.00419.26
8.2.80.0000.00917.97
8.2.70.0040.00417.48
8.2.60.0040.00418.03
8.2.50.0000.00918.07
8.2.40.0000.00719.34
8.2.30.0040.00419.75
8.2.20.0040.00417.70
8.2.10.0040.00418.04
8.2.00.0040.00418.05
8.1.280.0140.00325.92
8.1.270.0070.00020.13
8.1.260.0040.00426.35
8.1.250.0050.00228.09
8.1.240.0030.00720.81
8.1.230.0040.00717.42
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0060.00317.35
8.1.190.0080.00017.00
8.1.180.0000.00818.10
8.1.170.0040.00418.32
8.1.160.0070.00022.09
8.1.150.0030.00518.79
8.1.140.0080.00017.39
8.1.130.0030.00317.63
8.1.120.0030.00517.34
8.1.110.0000.00717.29
8.1.100.0000.00817.39
8.1.90.0050.00317.30
8.1.80.0000.00717.38
8.1.70.0030.00517.39
8.1.60.0000.00817.52
8.1.50.0040.00417.33
8.1.40.0040.00417.52
8.1.30.0040.00417.45
8.1.20.0040.00417.49
8.1.10.0030.00617.52
8.1.00.0080.00017.42
8.0.300.0020.00518.77
8.0.290.0000.00816.63
8.0.280.0030.00318.46
8.0.270.0030.00317.18
8.0.260.0080.00017.32
8.0.250.0040.00316.97
8.0.240.0000.00716.95
8.0.230.0000.00916.84
8.0.220.0000.00816.88
8.0.210.0070.00016.89
8.0.200.0030.00316.91
8.0.190.0030.00616.79
8.0.180.0000.00716.81
8.0.170.0040.00416.76
8.0.160.0030.00416.80
8.0.150.0070.00016.73
8.0.140.0040.00416.86
8.0.130.0030.00313.36
8.0.120.0000.00816.84
8.0.110.0040.00416.91
8.0.100.0040.00416.86
8.0.90.0000.00716.90
8.0.80.0040.01116.88
8.0.70.0070.00016.83
8.0.60.0080.00016.87
8.0.50.0050.00216.87
8.0.30.0050.01317.06
8.0.20.0090.01017.40
8.0.10.0070.00016.97
8.0.00.0080.01216.66
7.4.330.0050.00015.09
7.4.320.0040.00416.34
7.4.300.0060.00016.45
7.4.290.0000.00716.41
7.4.280.0000.00716.34
7.4.270.0000.00716.43
7.4.260.0030.00316.43
7.4.250.0040.00416.52
7.4.240.0000.00716.48
7.4.230.0020.00516.19
7.4.220.0090.01116.41
7.4.210.0090.00616.63
7.4.200.0050.00316.59
7.4.160.0120.01216.45
7.4.150.0140.00317.40
7.4.140.0120.00717.86
7.4.130.0060.01516.43
7.4.120.0100.00716.52
7.4.110.0110.00816.38
7.4.100.0120.00616.47
7.4.90.0030.01316.35
7.4.80.0070.01019.39
7.4.70.0030.01416.50
7.4.60.0140.00716.50
7.4.50.0000.00816.39
7.4.40.0120.00916.55
7.4.30.0140.00716.38
7.4.00.0070.01014.91
7.3.330.0000.00613.07
7.3.320.0030.00312.96
7.3.310.0000.00616.11
7.3.300.0000.00716.23
7.3.290.0000.00816.21
7.3.280.0110.00916.25
7.3.270.0040.01517.40
7.3.260.0100.00616.36
7.3.250.0110.00916.34
7.3.240.0080.00816.27
7.3.230.0070.01116.39
7.3.210.0100.01016.25
7.3.200.0080.00816.09
7.3.190.0060.01016.23
7.3.180.0090.00816.41
7.3.170.0080.00816.49
7.3.160.0060.01216.43
7.2.330.0140.00916.69
7.2.320.0110.00716.65
7.2.310.0070.01416.41
7.2.300.0100.00716.64
7.2.290.0140.00316.43
7.2.80.0060.00616.58
7.2.60.0030.01316.71
7.2.00.0030.01019.23
7.1.200.0070.00715.75
7.1.100.0030.00918.23
7.1.70.0030.01317.19
7.1.60.0070.01419.17
7.1.50.0030.00916.86
7.1.00.0100.07022.32
7.0.200.0040.00416.95
7.0.60.0030.08720.05
7.0.50.0130.07017.66
7.0.40.0070.05020.40
7.0.30.0530.07020.30
7.0.20.0270.07720.13
7.0.10.0000.09020.12
7.0.00.0100.06020.30
5.6.280.0000.06321.03
5.6.210.0200.07320.70
5.6.200.0070.08018.17
5.6.190.0100.04020.77
5.6.180.0070.04020.43
5.6.170.0330.07720.49
5.6.160.0070.08320.46
5.6.150.0100.05018.11
5.6.140.0000.04318.18
5.6.130.0100.03718.07
5.6.120.0030.04321.01
5.6.110.0070.04721.02
5.6.100.0030.07021.10
5.6.90.0070.08320.99
5.6.80.0100.08320.51
5.6.70.4430.04020.37
5.5.350.0230.05020.43
5.5.340.0000.07717.98
5.5.330.0130.04020.40
5.5.320.0070.04320.17
5.5.310.0230.03320.20
5.5.300.0070.06717.98
5.5.290.0100.08318.02
5.5.280.0030.04720.82
5.5.270.0070.08320.63
5.5.260.0030.06720.72
5.5.250.0100.03720.57
5.5.240.0230.07020.27
5.4.450.0630.06319.57
5.4.440.0770.07019.35
5.4.430.0730.06719.55
5.4.420.1070.08019.52
5.4.410.0900.05019.21
5.4.400.0930.05319.21
5.4.390.0830.06019.24
5.4.380.0970.04319.06
5.4.370.0670.06019.24
5.4.360.0730.06019.09
5.4.350.0670.06019.25
5.4.340.0670.06019.22
5.4.320.0800.04719.06
5.4.310.0800.05019.18
5.4.300.0600.06318.73
5.4.290.0770.05019.09
5.4.280.0670.06319.14
5.4.270.0730.05319.20
5.4.260.0870.04719.10
5.4.250.0930.04718.76
5.4.240.0630.05719.20
5.4.230.0800.06719.20
5.4.220.0830.05019.20
5.4.210.0770.05719.05
5.4.200.0730.06319.18
5.4.190.0770.05019.24
5.4.180.0770.05319.05
5.4.170.0830.05019.20
5.4.160.0730.04718.77
5.4.150.0730.05318.77
5.4.140.0670.05716.44
5.4.130.0730.05016.31
5.4.120.0700.05716.26
5.4.110.0900.05316.49
5.4.100.0870.04716.39
5.4.90.0770.04016.42
5.4.80.0930.05016.27
5.4.70.0330.04316.46
5.4.60.0270.07016.36
5.4.50.0100.06016.43
5.4.40.0030.03016.36
5.4.30.0170.05716.15
5.4.20.0000.04016.31

preferences:
36.35 ms | 400 KiB | 5 Q