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";

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)
8.3.60.0060.00918.30
8.3.50.0100.01320.94
8.3.40.0140.00318.58
8.3.30.0120.00318.34
8.3.20.0000.00720.21
8.3.10.0000.00823.53
8.3.00.0090.00019.43
8.2.180.0150.00616.63
8.2.170.0110.00422.96
8.2.160.0130.00720.35
8.2.150.0040.00424.18
8.2.140.0150.00024.66
8.2.130.0090.00026.16
8.2.120.0000.00817.63
8.2.110.0090.00019.24
8.2.100.0080.00417.63
8.2.90.0000.00819.08
8.2.80.0000.00817.97
8.2.70.0050.00317.50
8.2.60.0000.00817.68
8.2.50.0000.00818.07
8.2.40.0000.00819.52
8.2.30.0070.00019.76
8.2.20.0030.00617.72
8.2.10.0040.00417.98
8.2.00.0030.00618.16
8.1.280.0140.00325.92
8.1.270.0040.00420.24
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0100.00019.09
8.1.230.0040.00817.42
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0030.00617.36
8.1.190.0040.00417.22
8.1.180.0030.00518.10
8.1.170.0060.00318.43
8.1.160.0070.00021.85
8.1.150.0040.00418.85
8.1.140.0000.00817.25
8.1.130.0030.00317.66
8.1.120.0030.00317.42
8.1.110.0000.00817.36
8.1.100.0050.00317.31
8.1.90.0020.00517.39
8.1.80.0070.00017.41
8.1.70.0030.00317.27
8.1.60.0040.00417.44
8.1.50.0090.00017.43
8.1.40.0030.00517.38
8.1.30.0000.00817.58
8.1.20.0040.00417.46
8.1.10.0000.00717.43
8.1.00.0000.00717.44
8.0.300.0040.00418.77
8.0.290.0000.00716.75
8.0.280.0070.00018.42
8.0.270.0030.00317.20
8.0.260.0030.00317.14
8.0.250.0040.00416.91
8.0.240.0060.00016.82
8.0.230.0080.00316.84
8.0.220.0040.00416.86
8.0.210.0050.00316.78
8.0.200.0040.00416.95
8.0.190.0000.00816.91
8.0.180.0040.00416.80
8.0.170.0080.00016.85
8.0.160.0000.00716.95
8.0.150.0050.00316.82
8.0.140.0000.00716.72
8.0.130.0040.00413.19
8.0.120.0060.00316.82
8.0.110.0000.00816.92
8.0.100.0040.00416.74
8.0.90.0070.00016.77
8.0.80.0110.00316.93
8.0.70.0040.00416.77
8.0.60.0030.00316.94
8.0.50.0050.00216.89
8.0.30.0120.00616.82
8.0.20.0060.01317.40
8.0.10.0070.00016.92
8.0.00.0090.00916.84
7.4.330.0050.00015.08
7.4.320.0070.00016.55
7.4.300.0030.00316.34
7.4.290.0000.00716.38
7.4.280.0020.00516.43
7.4.270.0040.00416.45
7.4.260.0030.00316.45
7.4.250.0040.00416.52
7.4.240.0020.00516.43
7.4.230.0030.00316.42
7.4.220.0070.01416.37
7.4.210.0030.01016.43
7.4.200.0000.00716.36
7.4.160.0030.02016.21
7.4.150.0090.00917.40
7.4.140.0130.00617.86
7.4.130.0100.00716.44
7.4.120.0080.00916.45
7.4.110.0120.00616.44
7.4.100.0130.00316.50
7.4.90.0100.00716.40
7.4.80.0080.01219.39
7.4.70.0140.00416.53
7.4.60.0080.00816.36
7.4.50.0060.00016.45
7.4.40.0080.00816.36
7.4.30.0210.00016.34
7.4.10.0080.01114.90
7.4.00.0100.00614.92
7.3.330.0000.00513.03
7.3.320.0000.00713.03
7.3.310.0050.00216.14
7.3.300.0040.00416.24
7.3.290.0000.00716.07
7.3.280.0090.00916.19
7.3.270.0120.00617.40
7.3.260.0070.01016.48
7.3.250.0070.01116.27
7.3.240.0070.01016.29
7.3.230.0110.00816.53
7.3.210.0100.00716.12
7.3.200.0100.00716.57
7.3.190.0090.00616.29
7.3.180.0160.00616.43
7.3.170.0060.01116.35
7.3.160.0160.00016.43
7.3.130.0040.01314.79
7.3.120.0070.01214.77
7.3.110.0050.01314.75
7.3.100.0060.00614.60
7.3.90.0050.00714.60
7.3.80.0100.00214.68
7.3.70.0070.00914.62
7.3.60.0050.00514.64
7.3.50.0080.00514.71
7.3.40.0070.00714.83
7.3.30.0060.00814.73
7.3.20.0080.00616.65
7.3.10.0060.00816.65
7.3.00.0050.00716.71
7.2.330.0070.01016.34
7.2.320.0110.00616.39
7.2.310.0070.01116.69
7.2.300.0150.00616.55
7.2.290.0120.00616.63
7.2.260.0070.01115.06
7.2.250.0020.01215.07
7.2.240.0070.00815.17
7.2.230.0060.00815.05
7.2.220.0050.01214.88
7.2.210.0060.00714.82
7.2.200.0040.00614.83
7.2.190.0090.00414.79
7.2.180.0090.00914.75
7.2.170.0040.00814.79
7.2.160.0050.00914.95
7.2.150.0080.00516.86
7.2.140.0020.01116.96
7.2.130.0100.00516.73
7.2.120.0060.00816.95
7.2.110.0080.00516.70
7.2.100.0070.00716.89
7.2.90.0080.01016.74
7.2.80.0120.00816.71
7.2.70.0100.00716.79
7.2.60.0110.00417.01
7.2.50.0000.01616.83
7.2.40.0080.00716.97
7.2.30.0030.00916.92
7.2.20.0030.01217.03
7.2.10.0070.01016.96
7.2.00.0050.00917.69
7.1.330.0050.00815.74
7.1.320.0080.00515.66
7.1.310.0060.00415.76
7.1.300.0040.01115.88
7.1.290.0080.00315.76
7.1.280.0100.00415.81
7.1.270.0020.01315.69
7.1.260.0090.00015.67
7.1.250.0050.00915.66
7.1.240.0040.00715.65
7.1.230.0020.00915.71
7.1.220.0100.00315.80
7.1.210.0060.01015.97
7.1.200.0070.00515.68
7.1.190.0050.00915.71
7.1.180.0050.00715.89
7.1.170.0030.01015.67
7.1.160.0080.00815.75
7.1.150.0080.00515.86
7.1.140.0020.01015.64
7.1.130.0030.01115.74
7.1.120.0070.00615.93
7.1.110.0070.00615.72
7.1.100.0020.01116.50
7.1.90.0050.01115.92
7.1.80.0080.00715.86
7.1.70.0050.00716.23
7.1.60.0050.01016.93
7.1.50.0050.00616.20
7.1.40.0060.00815.81
7.1.30.0040.00915.84
7.1.20.0070.00415.78
7.1.10.0050.00915.84
7.1.00.0040.03117.89
7.0.330.0060.00615.39
7.0.320.0060.00715.43
7.0.310.0030.00715.27
7.0.300.0080.00715.35
7.0.290.0080.00615.45
7.0.280.0050.00915.43
7.0.270.0070.00715.38
7.0.260.0040.00915.35
7.0.250.0040.00415.59
7.0.240.0060.00915.41
7.0.230.0060.00815.41
7.0.220.0020.01315.25
7.0.210.0020.01115.49
7.0.200.0040.00715.88
7.0.190.0040.00715.50
7.0.180.0100.00515.36
7.0.170.0060.00615.30
7.0.160.0060.00315.26
7.0.150.0030.01115.35
7.0.140.0050.00915.31
7.0.130.0050.00415.35
7.0.120.0040.00615.41
7.0.110.0050.00815.50
7.0.100.0040.00915.52
7.0.90.0020.01015.37
7.0.80.0050.00915.46
7.0.70.0020.00915.46
7.0.60.0050.03016.93
7.0.50.0090.01816.22
7.0.40.0050.03315.68
7.0.30.0160.01815.73
7.0.20.0080.02015.64
7.0.10.0020.03615.69
7.0.00.0070.02415.71
5.6.400.0050.00814.39
5.6.390.0070.00614.44
5.6.380.0090.00414.17
5.6.370.0060.00814.29
5.6.360.0070.00714.42
5.6.350.0080.00614.20
5.6.340.0070.00514.14
5.6.330.0070.00714.33
5.6.320.0080.00314.18
5.6.310.0020.01114.37
5.6.300.0070.00414.37
5.6.290.0020.01414.34
5.6.280.0030.03116.52
5.6.270.0060.00514.30
5.6.260.0040.00914.28
5.6.250.0080.00514.23
5.6.240.0090.00614.29
5.6.230.0050.00714.30
5.6.220.0050.00614.29
5.6.210.0070.02116.37
5.6.200.0050.01815.41
5.6.190.0050.02016.32
5.6.180.0080.03016.32
5.6.170.0100.02916.39
5.6.160.0090.03216.34
5.6.150.0050.02315.61
5.6.140.0020.03515.55
5.6.130.0020.03415.48
5.6.120.0070.03216.65
5.6.110.0080.02416.42
5.6.100.0060.03016.61
5.6.90.0070.03116.40
5.6.80.0050.02216.28
5.6.70.1470.01716.29
5.6.60.0060.00614.30
5.6.50.0060.00914.29
5.6.40.0080.00314.02
5.6.30.0000.01313.98
5.6.20.0080.00914.08
5.6.10.0040.01014.33
5.6.00.0020.01414.25
5.5.380.0080.00414.04
5.5.370.0050.00714.22
5.5.360.0050.00714.07
5.5.350.0120.03016.20
5.5.340.0050.03415.53
5.5.330.0050.01916.04
5.5.320.0080.02816.15
5.5.310.0140.01916.21
5.5.300.0060.03315.45
5.5.290.0060.03015.40
5.5.280.0060.03716.37
5.5.270.0100.02616.38
5.5.260.0070.03116.37
5.5.250.0100.02916.11
5.5.240.0120.01716.13
5.5.230.0070.00514.00
5.5.220.0050.01213.96
5.5.210.0110.00514.01
5.5.200.0090.00713.95
5.5.190.0070.00713.86
5.5.180.0020.01214.23
5.5.170.0050.01114.01
5.5.160.0070.00713.96
5.5.150.0050.00714.28
5.5.140.0050.01014.01
5.5.130.0050.00714.13
5.5.120.0080.00713.94
5.5.110.0080.00414.10
5.5.100.0080.00414.11
5.5.90.0020.01114.01
5.5.80.0080.00714.21
5.5.70.0070.00613.92
5.5.60.0070.00714.28
5.5.50.0080.00614.03
5.5.40.0020.01213.88
5.5.30.0060.00913.91
5.5.20.0060.01014.09
5.5.10.0090.00614.23
5.5.00.0020.01013.98
5.4.450.0320.02314.19
5.4.440.0330.02314.04
5.4.430.0320.02114.23
5.4.420.0340.01614.12
5.4.410.0240.02814.14
5.4.400.0250.02113.94
5.4.390.0260.02313.93
5.4.380.0250.02213.99
5.4.370.0290.02914.11
5.4.360.0290.02214.02
5.4.350.0330.01714.14
5.4.340.0260.02414.11
5.4.330.0000.00911.55
5.4.320.0290.02213.96
5.4.310.0300.01813.95
5.4.300.0320.01914.02
5.4.290.0310.02114.13
5.4.280.0240.02314.01
5.4.270.0250.02114.10
5.4.260.0280.02214.08
5.4.250.0260.02614.09
5.4.240.0290.01814.03
5.4.230.0340.02613.88
5.4.220.0280.02313.97
5.4.210.0350.02013.99
5.4.200.0320.02014.02
5.4.190.0330.01813.86
5.4.180.0320.02213.88
5.4.170.0250.02213.99
5.4.160.0270.02113.94
5.4.150.0260.02214.03
5.4.140.0290.02013.01
5.4.130.0250.02113.03
5.4.120.0280.02113.15
5.4.110.0290.02213.12
5.4.100.0270.02013.21
5.4.90.0290.02012.91
5.4.80.0230.02013.11
5.4.70.0110.02013.07
5.4.60.0120.02913.06
5.4.50.0020.02513.16
5.4.40.0070.02313.12
5.4.30.0050.02913.17
5.4.20.0030.03013.16
5.4.10.0060.00311.48
5.4.00.0030.00311.53

preferences:
62.7 ms | 401 KiB | 5 Q