3v4l.org

run code in 300+ PHP versions simultaneously
<?php function encodeString($str) { for ($i = 0; $i < 5; ++$i) { $str = base64_decode(strrev($str)); } return $str; } var_dump(strrev("Rl zccsm'x ufm sdkfx scgddx tulubfg? Nqtr ybfsc mq ufmq 'tpgnredlxma dckdukgt'? Nkpa lqu klsc bfsc: /ushltqscPzty"));

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)
8.3.60.0040.01818.06
8.3.50.0140.00418.21
8.3.40.0100.01018.46
8.3.30.0130.00318.49
8.3.20.0040.00418.53
8.3.10.0060.00318.67
8.3.00.0070.00023.56
8.2.180.0040.01118.03
8.2.170.0120.00322.96
8.2.160.0100.00322.21
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0040.00421.03
8.2.120.0070.00026.35
8.2.110.0060.00322.13
8.2.100.0110.00017.78
8.2.90.0090.00017.78
8.2.80.0000.01120.48
8.2.70.0080.00017.63
8.2.60.0030.00517.50
8.2.50.0040.00417.55
8.2.40.0060.00320.95
8.2.30.0050.00320.65
8.2.20.0000.00717.84
8.2.10.0000.00717.83
8.2.00.0000.00917.96
8.1.280.0090.01225.92
8.1.270.0090.00022.11
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0060.00320.52
8.1.230.0100.00022.07
8.1.220.0000.00817.74
8.1.210.0060.00618.77
8.1.200.0090.00017.23
8.1.190.0000.00817.10
8.1.180.0000.01018.10
8.1.170.0040.00418.51
8.1.160.0060.00318.80
8.1.150.0070.00018.61
8.1.140.0000.00718.68
8.1.130.0040.00421.97
8.1.120.0000.00717.26
8.1.110.0020.00517.21
8.1.100.0000.00717.21
8.1.90.0030.00617.35
8.1.80.0040.00417.28
8.1.70.0000.00917.36
8.1.60.0000.00717.45
8.1.50.0080.00317.38
8.1.40.0030.00717.38
8.1.30.0000.01017.38
8.1.20.0040.00417.51
8.1.10.0070.00017.28
8.1.00.0000.01017.32
8.0.300.0070.00019.73
8.0.290.0030.00616.58
8.0.280.0030.00318.19
8.0.270.0030.00717.12
8.0.260.0000.00718.28
8.0.250.0070.00016.85
8.0.240.0030.00316.70
8.0.230.0030.00316.68
8.0.220.0070.00316.70
8.0.210.0040.00416.67
8.0.200.0030.00316.84
8.0.190.0000.00716.82
8.0.180.0030.00616.69
8.0.170.0040.00416.71
8.0.160.0000.00716.63
8.0.150.0030.00516.73
8.0.140.0030.00716.77
8.0.130.0020.00513.10
8.0.120.0000.00716.70
8.0.110.0030.00516.59
8.0.100.0030.00516.64
8.0.90.0040.00416.64
8.0.80.0120.00316.78
8.0.70.0040.00416.66
8.0.60.0050.00216.54
8.0.50.0040.00416.64
8.0.30.0080.01116.84
8.0.20.0120.00717.40
8.0.10.0020.00516.74
8.0.00.0060.01216.67
7.4.330.0060.00015.55
7.4.320.0000.00716.45
7.4.300.0070.00016.36
7.4.290.0030.00316.39
7.4.280.0000.00716.37
7.4.270.0000.00716.48
7.4.260.0030.00616.36
7.4.250.0070.00016.29
7.4.240.0030.00316.30
7.4.230.0080.00016.28
7.4.220.0030.00516.37
7.4.210.0040.01316.39
7.4.200.0000.00616.27
7.4.160.0090.01016.32
7.4.140.0110.01117.86
7.4.130.0100.00716.24
7.4.120.0120.00516.26
7.4.110.0100.01016.40
7.4.100.0110.00616.22
7.4.90.0150.00416.26
7.4.80.0090.01117.32
7.4.70.0100.01316.27
7.4.60.0160.01016.28
7.4.50.0080.00816.35
7.4.40.0070.01216.31
7.4.30.0140.00516.29
7.4.20.0130.00816.32
7.4.10.0090.01016.29
7.4.00.0070.01315.97
7.3.330.0030.00313.07
7.3.320.0030.00313.03
7.3.310.0060.00016.26
7.3.300.0030.00316.04
7.3.290.0030.00316.04
7.3.280.0040.01416.18
7.3.260.0110.01016.27
7.3.240.0100.00916.30
7.3.230.0130.00516.22
7.3.220.0070.01316.26
7.3.210.0120.00716.14
7.3.200.0080.00916.30
7.3.190.0110.00716.24
7.3.180.0100.00916.27
7.3.170.0130.00416.16
7.3.160.0120.00616.15
7.3.150.0080.01016.08
7.3.140.0100.01016.20
7.3.130.0110.00816.14
7.3.120.0070.01316.10
7.3.110.0090.01115.83
7.3.100.0090.01015.68
7.3.90.0060.01115.45
7.3.80.0090.00815.49
7.3.70.0090.00915.29
7.3.60.0080.01015.37
7.3.50.0090.00815.43
7.3.40.0080.00915.29
7.3.30.0090.00715.29
7.3.20.0120.00615.72
7.3.10.0110.00815.75
7.3.00.0070.01015.66
7.2.340.0100.00816.40
7.2.330.0130.00416.47
7.2.320.0060.01316.33
7.2.310.0070.01316.40
7.2.300.0110.00816.28
7.2.290.0140.00516.38
7.2.280.0120.00616.37
7.2.270.0070.01116.31
7.2.260.0140.00616.31
7.2.250.0110.01016.44
7.2.240.0100.00916.05
7.2.230.0080.00915.78
7.2.220.0090.00915.58
7.2.210.0060.01115.59
7.2.200.0110.00715.50
7.2.190.0080.01015.58
7.2.180.0070.01015.48
7.2.170.0070.00915.45
7.2.160.0100.00815.39
7.2.150.0110.00816.13
7.2.140.0100.01016.05
7.2.130.0100.00816.14
7.2.120.0110.00716.00
7.2.110.0110.00816.01
7.2.100.0340.00815.90
7.2.90.0360.00915.98
7.2.80.0360.00815.91
7.2.70.0100.01015.97
7.2.60.0110.01216.00
7.2.50.0240.01015.98
7.2.40.0220.00916.02
7.2.30.0120.01016.03
7.2.20.0110.00915.98
7.2.10.0100.00916.03
7.2.00.0170.00915.91
7.1.330.0120.00915.44
7.1.320.0160.00915.00
7.1.310.0120.00814.87
7.1.300.0150.00515.04
7.1.290.0110.00914.73
7.1.280.0090.00915.00
7.1.270.0110.00714.86
7.1.260.0080.01114.86
7.1.250.0170.00715.10
7.1.240.0160.00715.03
7.1.230.0120.01015.01
7.1.220.0470.01014.93
7.1.210.0290.01114.95
7.1.200.0300.00914.92
7.1.190.0250.00914.93
7.1.180.0190.00914.93
7.1.170.0130.01014.86
7.1.160.0130.00914.89
7.1.150.0130.00814.89
7.1.140.0180.00814.91
7.1.130.0120.01014.81
7.1.120.0180.00914.82
7.1.110.0140.01014.93
7.1.100.0160.00914.93
7.1.90.0120.01114.90
7.1.80.0150.00714.94
7.1.70.0290.00914.90
7.1.60.0480.00716.75
7.1.50.0150.00816.63
7.1.40.0240.00816.74
7.1.30.0150.01116.67
7.1.20.0220.01016.45
7.1.10.0140.01014.90
7.1.00.0130.01014.84
7.0.330.0160.00814.39
7.0.320.0150.00814.80
7.0.310.0130.01014.88
7.0.300.0170.00714.87
7.0.290.0150.00915.06
7.0.280.0210.00914.96
7.0.270.0240.00414.95
7.0.260.0150.00814.87
7.0.250.0100.01215.12
7.0.240.0160.00715.00
7.0.230.0210.00915.05
7.0.220.0170.00814.96
7.0.210.0160.00714.98
7.0.200.0150.00715.02
7.0.190.0130.01115.06
7.0.180.0130.00814.89
7.0.170.0130.01014.90
7.0.160.0140.00914.96
7.0.150.0170.01014.97
7.0.140.0150.01014.81
7.0.130.0190.01115.04
7.0.120.0110.01215.04
7.0.110.0170.01014.90
7.0.100.0190.00714.97
7.0.90.0180.00814.96
7.0.80.0190.01015.03
7.0.70.0160.01114.93
7.0.60.0200.00715.08
7.0.50.0190.00615.02
7.0.40.0170.00715.02
7.0.30.0190.00715.02
7.0.20.0150.00914.91
7.0.10.0170.00715.04
7.0.00.0140.01115.05
5.6.400.0140.00914.61
5.6.390.0140.00914.67
5.6.380.0120.00914.55
5.6.370.0120.01415.65
5.6.360.0130.01115.70
5.6.350.0170.01015.78
5.6.340.0170.01315.61
5.6.330.0140.01315.54
5.6.320.0190.00615.71
5.6.310.0120.01215.48
5.6.300.0140.01015.60
5.6.290.0140.01215.57
5.6.280.0160.01115.58
5.6.270.0190.00815.64
5.6.260.0110.01415.75
5.6.250.0140.01415.69
5.6.240.0160.01115.67
5.6.230.0140.01415.64
5.6.220.0170.01115.70
5.6.210.0120.01315.58
5.6.200.0130.01315.62
5.6.190.0140.01315.64
5.6.180.0170.01215.51
5.6.170.0160.01215.53
5.6.160.0180.01115.63
5.6.150.0190.01115.58
5.6.140.0130.01315.71
5.6.130.0140.01115.64
5.6.120.0160.01115.55
5.6.110.0130.01015.58
5.6.100.0160.01015.55
5.6.90.0120.01415.58
5.6.80.0100.01515.57
5.6.70.0140.01115.53
5.6.60.0160.01115.57
5.6.50.0180.01015.76
5.6.40.0150.01315.40
5.6.30.0150.01115.68
5.6.20.0160.01115.64
5.6.10.0170.01015.60
5.6.00.0180.00915.54

preferences:
59.1 ms | 401 KiB | 5 Q