3v4l.org

run code in 300+ PHP versions simultaneously
<?php function rev($str) { if ( ! $str ) { return; } return rev(substr($str,1)) . $str[0]; } echo rev('hola mundos niƱos');

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)
8.3.40.0000.01618.89
8.3.30.0040.01319.22
8.3.20.0040.00420.21
8.3.10.0040.00421.97
8.3.00.0000.00822.44
8.2.170.0100.01022.96
8.2.160.0070.00719.21
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0060.00326.16
8.2.120.0000.00819.36
8.2.110.0000.01021.00
8.2.100.0070.00418.16
8.2.90.0040.00419.05
8.2.80.0040.00417.97
8.2.70.0000.00817.38
8.2.60.0060.00319.64
8.2.50.0030.00618.16
8.2.40.0040.00420.60
8.2.30.0040.00419.24
8.2.20.0040.00417.61
8.2.10.0030.00517.68
8.2.00.0020.00517.55
8.1.270.0070.00022.06
8.1.260.0020.00526.35
8.1.250.0060.00328.09
8.1.240.0060.00323.85
8.1.230.0080.00320.45
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00617.35
8.1.190.0080.00017.00
8.1.180.0040.00418.10
8.1.170.0040.00418.56
8.1.160.0040.00418.82
8.1.150.0040.00420.05
8.1.140.0030.00617.30
8.1.130.0030.00317.71
8.1.120.0000.00717.29
8.1.110.0000.00717.22
8.1.100.0000.00817.34
8.1.90.0080.00017.38
8.1.80.0000.00717.27
8.1.70.0000.00717.38
8.1.60.0040.00417.42
8.1.50.0000.00717.43
8.1.40.0040.00417.34
8.1.30.0040.00417.55
8.1.20.0030.00617.62
8.1.10.0050.00317.51
8.1.00.0020.00517.28
8.0.300.0080.00018.84
8.0.290.0020.00516.63
8.0.280.0040.00418.29
8.0.270.0070.00017.18
8.0.260.0080.00016.66
8.0.250.0030.00316.89
8.0.240.0030.00316.86
8.0.230.0070.00016.81
8.0.220.0070.00016.81
8.0.210.0000.00716.78
8.0.200.0000.00616.84
8.0.190.0030.00316.83
8.0.180.0070.00016.71
8.0.170.0040.00416.77
8.0.160.0000.00816.84
8.0.150.0040.00416.77
8.0.140.0000.00716.74
8.0.130.0050.00013.18
8.0.120.0080.00016.85
8.0.110.0000.00716.74
8.0.100.0000.00716.73
8.0.90.0000.00716.86
8.0.80.0110.00316.79
8.0.70.0040.00416.82
8.0.60.0030.00316.70
8.0.50.0040.00416.66
8.0.30.0060.01316.96
8.0.20.0130.00517.40
8.0.10.0080.00016.94
8.0.00.0150.00616.72
7.4.330.0050.00015.09
7.4.320.0030.00316.59
7.4.300.0060.00016.45
7.4.290.0000.00716.53
7.4.280.0040.00416.41
7.4.270.0030.00316.42
7.4.260.0000.00716.54
7.4.250.0040.00416.45
7.4.240.0040.00416.52
7.4.230.0040.00216.59
7.4.220.0100.01316.37
7.4.210.0050.01016.48
7.4.200.0030.00316.59
7.4.190.0050.00216.40
7.4.160.0060.00916.65
7.4.150.0070.01017.40
7.4.140.0060.01317.86
7.4.130.0100.00816.36
7.4.120.0060.01016.53
7.4.110.0070.01016.63
7.4.100.0100.00716.60
7.4.90.0110.00716.54
7.4.80.0030.01319.39
7.4.70.0050.01616.40
7.4.60.0110.00716.34
7.4.50.0000.00516.58
7.4.40.0060.00922.77
7.4.30.0150.00716.36
7.4.10.0070.01016.22
7.4.00.0020.01415.54
7.3.330.0000.00613.25
7.3.320.0060.00013.37
7.3.310.0030.00316.40
7.3.300.0030.00316.34
7.3.290.0100.00516.21
7.3.280.0070.00816.25
7.3.270.0070.01017.40
7.3.260.0090.00916.35
7.3.250.0120.00516.32
7.3.240.0160.00016.28
7.3.230.0160.00016.39
7.3.210.0110.01116.54
7.3.200.0090.00619.39
7.3.190.0150.00316.24
7.3.180.0140.00416.39
7.3.170.0120.00416.48
7.3.160.0090.00616.46
7.3.130.0060.01216.25
7.3.120.0050.01215.66
7.3.110.0040.01116.40
7.3.100.0130.00316.27
7.3.90.0030.01316.51
7.3.80.0100.00716.41
7.3.70.0090.00316.22
7.3.60.0050.00516.34
7.3.50.0030.00616.38
7.3.40.0090.00316.27
7.3.30.0060.00916.29
7.3.20.0030.01418.06
7.3.10.0090.00918.09
7.3.00.0030.01518.07
7.2.330.0070.01016.68
7.2.320.0100.00716.66
7.2.310.0130.00316.82
7.2.300.0070.01016.45
7.2.290.0070.01016.45
7.2.260.0140.00716.77
7.2.250.0030.01416.78
7.2.240.0000.01516.58
7.2.230.0070.01016.62
7.2.220.0000.01116.37
7.2.210.0040.00716.25
7.2.200.0070.00716.55
7.2.190.0030.00716.54
7.2.180.0060.01016.38
7.2.170.0080.00316.49
7.2.160.0040.01216.43
7.2.150.0100.00018.31
7.2.140.0140.00018.39
7.2.130.0060.00918.46
7.2.120.0040.00818.41
7.2.110.0080.00618.45
7.2.100.0030.00918.38
7.2.90.0070.00718.20
7.2.80.0030.01018.46
7.2.70.0070.00718.38
7.2.60.0130.00318.30
7.2.50.0030.01318.48
7.2.40.0030.00718.31
7.2.30.0100.00018.36
7.2.20.0000.01518.21
7.2.10.0070.00718.36
7.2.00.0040.00718.84
7.1.330.0150.00017.49
7.1.320.0130.00017.54
7.1.310.0030.01317.41
7.1.300.0030.01017.27
7.1.290.0080.00617.55
7.1.280.0000.01717.04
7.1.270.0000.01417.37
7.1.260.0000.01317.34
7.1.250.0090.00917.34
7.1.240.0040.01117.34
7.1.230.0080.00417.25
7.1.220.0040.00817.44
7.1.210.0060.00617.37
7.1.200.0070.00516.66
7.1.190.0060.00617.47
7.1.180.0100.00717.21
7.1.170.0090.00617.27
7.1.160.0030.01217.21
7.1.150.0030.01017.19
7.1.140.0000.01517.30
7.1.130.0040.01117.23
7.1.120.0090.00617.35
7.1.110.0070.00717.23
7.1.100.0040.01217.69
7.1.90.0030.01017.26
7.1.80.0000.01217.29
7.1.70.0100.00617.10
7.1.60.0110.00718.57
7.1.50.0090.00917.19
7.1.40.0030.01017.50
7.1.30.0130.00017.35
7.1.20.0070.00317.25
7.1.10.0040.00717.33
7.1.00.0010.04319.86
7.0.330.0060.01016.90
7.0.320.0070.01016.99
7.0.310.0100.00716.96
7.0.300.0070.01016.96
7.0.290.0060.00616.97
7.0.280.0030.01017.09
7.0.270.0080.00416.94
7.0.260.0030.01416.83
7.0.250.0080.00817.08
7.0.240.0080.00817.26
7.0.230.0070.01017.16
7.0.220.0040.01116.92
7.0.210.0090.00616.81
7.0.200.0020.01017.01
7.0.190.0000.00917.02
7.0.180.0030.01417.07
7.0.170.0060.00916.94
7.0.160.0060.00316.86
7.0.150.0070.00716.81
7.0.140.0030.03619.64
7.0.130.0120.00416.97
7.0.120.0080.00416.86
7.0.110.0120.00317.05
7.0.100.0080.00417.01
7.0.90.0030.01417.13
7.0.80.0110.00416.94
7.0.70.0060.00316.93
7.0.60.0030.03418.42
7.0.50.0070.04517.26
7.0.40.0050.03017.49
7.0.30.0330.03517.42
7.0.20.0110.02617.57
7.0.10.0130.04617.53
7.0.00.0090.02417.54
5.6.400.0060.00615.99
5.6.390.0100.00715.78
5.6.380.0000.00916.26
5.6.370.0040.00815.77
5.6.360.0120.00316.16
5.6.350.0030.01115.90
5.6.340.0090.00016.05
5.6.330.0060.00315.88
5.6.320.0110.00416.05
5.6.310.0080.00815.98
5.6.300.0060.00916.17
5.6.290.0030.00915.81
5.6.280.0040.04318.53
5.6.270.0060.00616.21
5.6.260.0060.00916.00
5.6.250.0000.00915.75
5.6.240.0080.00315.88
5.6.230.0060.00615.87
5.6.220.0070.01015.93
5.6.210.0070.04618.24
5.6.200.0020.03416.95
5.6.190.0030.03418.20
5.6.180.0130.03118.15
5.6.170.0220.03618.13
5.6.160.0060.04318.36
5.6.150.0100.02516.94
5.6.140.0050.03017.07
5.6.130.0060.03617.09
5.6.120.0030.05218.49
5.6.110.0120.03218.39
5.6.100.0070.02018.39
5.6.90.0070.03818.58
5.6.80.0070.04418.13
5.6.70.0170.03618.22
5.6.60.0090.00615.79
5.6.50.0100.00315.75
5.6.40.0040.00716.04
5.6.30.0050.00515.69
5.6.20.0060.00915.79
5.6.10.0040.01215.97
5.6.00.0000.01415.99
5.5.380.0000.01216.13
5.5.370.0030.00615.57
5.5.360.0050.00815.73
5.5.350.0120.04418.16
5.5.340.0040.02517.00
5.5.330.0080.04218.22
5.5.320.0130.04718.08
5.5.310.0200.04218.04
5.5.300.0040.02117.08
5.5.290.0070.04516.96
5.5.280.0100.04218.46
5.5.270.0080.04118.18
5.5.260.0100.03018.33
5.5.250.0050.03018.11
5.5.240.0040.02418.00
5.5.230.0170.00015.63
5.5.220.0070.01015.83
5.5.210.0040.01115.54
5.5.200.0070.01315.62
5.5.190.0090.00915.80
5.5.180.0080.00315.84
5.5.170.0030.01015.76
5.5.160.0070.00715.80
5.5.150.0000.01315.48
5.5.140.0090.00615.96
5.5.130.0060.01215.82
5.5.120.0040.01115.54
5.5.110.0030.00715.66
5.5.100.0070.00715.80
5.5.90.0080.00815.77
5.5.80.0030.01415.70
5.5.70.0040.01215.78
5.5.60.0080.00415.77
5.5.50.0070.01015.77
5.5.40.0060.00615.55
5.5.30.0030.01215.70
5.5.20.0060.00915.86
5.5.10.0130.00315.75
5.5.00.0060.01015.48
5.4.450.0030.03616.08
5.4.440.0300.03416.10
5.4.430.0270.03616.00
5.4.420.0400.04216.12
5.4.410.0120.02815.88
5.4.400.0770.00415.70
5.4.390.0770.00415.74
5.4.380.0150.03015.58
5.4.370.0360.03015.76
5.4.360.0550.02415.73
5.4.350.0470.02815.66
5.4.340.0380.02615.58
5.4.330.0000.01112.69
5.4.320.0040.02412.60
5.4.310.0070.02212.59
5.4.300.0050.02212.59
5.4.290.0090.02012.63
5.4.280.0050.02112.55
5.4.270.0070.02012.54
5.4.260.0090.02515.72
5.4.250.0120.02615.75
5.4.240.0090.02915.86
5.4.230.0020.03015.73
5.4.220.0030.03315.80
5.4.210.0050.03315.71
5.4.200.0070.02815.86
5.4.190.0070.02715.77
5.4.180.0080.02715.84
5.4.170.0120.02315.67
5.4.160.0090.03115.79
5.4.150.0050.02915.79
5.4.140.0140.02514.53
5.4.130.0100.03814.50
5.4.120.0140.03414.52
5.4.110.0050.03114.51
5.4.100.0080.02714.60
5.4.90.0030.03014.63
5.4.80.0100.03214.66
5.4.70.0030.03014.50
5.4.60.0070.02614.58
5.4.50.0090.02314.58
5.4.40.0050.03614.68
5.4.30.0050.02914.67
5.4.20.0100.02814.52
5.4.10.0080.02714.52
5.4.00.0120.03314.26
5.3.290.0020.02712.93
5.3.280.0060.02713.82
5.3.270.0080.03313.82
5.3.260.0090.03013.85
5.3.250.0050.03213.79
5.3.240.0080.03913.73
5.3.230.0110.03713.91
5.3.220.0070.02813.87
5.3.210.0020.03213.83
5.3.200.0090.03913.69
5.3.190.0060.02713.70
5.3.180.0050.02813.86
5.3.170.0070.02713.87
5.3.160.0090.02513.83
5.3.150.0070.02713.80
5.3.140.0050.04013.80
5.3.130.0050.02713.89
5.3.120.0050.03313.74
5.3.110.0080.04013.73
5.3.100.0070.03013.54
5.3.90.0100.02713.44
5.3.80.0020.03313.53
5.3.70.0040.02813.46
5.3.60.0030.03313.60
5.3.50.0070.02513.57
5.3.40.0050.03213.57
5.3.30.0050.03113.45
5.3.20.0070.03013.33
5.3.10.0080.03013.26
5.3.00.0100.03813.21
5.2.170.0170.04711.23
5.2.160.0070.04011.13
5.2.150.0030.04311.11
5.2.140.0100.04011.22
5.2.130.0070.05011.18
5.2.120.0070.04311.05
5.2.110.0070.05311.19
5.2.100.0100.04011.06
5.2.90.0030.04311.10
5.2.80.0130.05010.92
5.2.70.0070.04711.27
5.2.60.0100.04011.12
5.2.50.0170.03711.09
5.2.40.0170.05010.97
5.2.30.0130.04311.05
5.2.20.0130.03710.79
5.2.10.0130.04010.86
5.2.00.0070.04010.80
5.1.60.0070.0479.97
5.1.50.0030.03710.07
5.1.40.0000.03710.04
5.1.30.0000.04010.33
5.1.20.0030.05710.44
5.1.10.0070.03310.16
5.1.00.0070.03310.03
5.0.50.0000.0338.74
5.0.40.0070.0238.61
5.0.30.0030.0408.46
5.0.20.0070.0238.39
5.0.10.0000.0308.24
5.0.00.0070.0378.20
4.4.90.0070.0206.71
4.4.80.0070.0276.71
4.4.70.0000.0236.70
4.4.60.0030.0206.70
4.4.50.0030.0206.70
4.4.40.0100.0276.70
4.4.30.0030.0206.70
4.4.20.0030.0206.70
4.4.10.0000.0236.70
4.4.00.0000.0336.70
4.3.110.0000.0236.70
4.3.100.0000.0206.70
4.3.90.0030.0206.70
4.3.80.0000.0376.70
4.3.70.0000.0236.70
4.3.60.0000.0236.70
4.3.50.0030.0206.70
4.3.40.0070.0406.70
4.3.30.0000.0236.70
4.3.20.0030.0206.70
4.3.10.0030.0276.70
4.3.00.0030.0276.78

preferences:
42.43 ms | 400 KiB | 5 Q