3v4l.org

run code in 300+ PHP versions simultaneously
<?php function rev($str) { return $str?rev(substr($str,1)).$str[0]:''; } $txt = "Thomas"; echo rev($txt);

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)
8.3.60.0150.00316.63
8.3.50.0070.01222.11
8.3.40.0090.00918.92
8.3.30.0100.00718.66
8.3.20.0070.00020.32
8.3.10.0040.00423.65
8.3.00.0090.00019.35
8.2.180.0140.00718.27
8.2.170.0140.00022.96
8.2.160.0100.00320.43
8.2.150.0030.00624.18
8.2.140.0060.00324.66
8.2.130.0060.00317.50
8.2.120.0050.00326.35
8.2.110.0030.00722.06
8.2.100.0060.00617.66
8.2.90.0030.00619.39
8.2.80.0040.00417.97
8.2.70.0000.00817.25
8.2.60.0000.00917.93
8.2.50.0080.00018.07
8.2.40.0040.00419.38
8.2.30.0070.00020.61
8.2.20.0100.00017.65
8.2.10.0070.00017.89
8.2.00.0050.00317.98
8.1.280.0150.00625.92
8.1.270.0110.00424.01
8.1.260.0040.00428.09
8.1.250.0070.00028.09
8.1.240.0060.00323.83
8.1.230.0110.00019.06
8.1.220.0040.00417.79
8.1.210.0040.00418.77
8.1.200.0030.00617.35
8.1.190.0040.00417.35
8.1.180.0000.00718.10
8.1.170.0040.00418.60
8.1.160.0040.00422.00
8.1.150.0000.00718.93
8.1.140.0040.00419.48
8.1.130.0070.00017.61
8.1.120.0040.00417.47
8.1.110.0030.00617.46
8.1.100.0000.00717.47
8.1.90.0030.00517.48
8.1.80.0000.00717.43
8.1.70.0040.00417.34
8.1.60.0000.00717.63
8.1.50.0030.00617.53
8.1.40.0040.00417.39
8.1.30.0060.00317.65
8.1.20.0000.00817.61
8.1.10.0040.00417.55
8.1.00.0040.00417.39
8.0.300.0000.00718.77
8.0.290.0000.00716.75
8.0.280.0000.00818.44
8.0.270.0070.00017.11
8.0.260.0030.00317.30
8.0.250.0070.00016.93
8.0.240.0000.00816.99
8.0.230.0000.00716.95
8.0.220.0030.00316.88
8.0.210.0050.00316.88
8.0.200.0000.00616.97
8.0.190.0000.00916.96
8.0.180.0070.00016.83
8.0.170.0050.00316.96
8.0.160.0000.00716.93
8.0.150.0040.00416.83
8.0.140.0040.00416.71
8.0.130.0050.00013.29
8.0.120.0040.00416.89
8.0.110.0000.00816.90
8.0.100.0050.00216.86
8.0.90.0040.00416.88
8.0.80.0030.01316.87
8.0.70.0000.00816.93
8.0.60.0000.00716.83
8.0.50.0040.00316.77
8.0.30.0050.01517.08
8.0.20.0140.01117.40
8.0.10.0040.00416.73
8.0.00.0120.00716.65
7.4.330.0020.00216.71
7.4.320.0000.00616.64
7.4.300.0060.00016.65
7.4.290.0070.00016.51
7.4.280.0070.00016.49
7.4.270.0000.00716.64
7.4.260.0000.00716.47
7.4.250.0050.00216.47
7.4.240.0020.00616.50
7.4.230.0030.00316.43
7.4.220.0090.01316.45
7.4.210.0100.00916.46
7.4.200.0050.00316.34
7.4.160.0130.00616.40
7.4.150.0100.01017.40
7.4.140.0110.00917.86
7.4.130.0130.00516.53
7.4.120.0120.00716.47
7.4.110.0070.01316.59
7.4.100.0140.00716.51
7.4.90.0060.01216.48
7.4.80.0090.01319.39
7.4.70.0120.01216.47
7.4.60.0030.01316.43
7.4.50.0070.01016.43
7.4.40.0050.01016.51
7.4.30.0060.01016.61
7.4.10.0060.00914.70
7.4.00.0050.01114.92
7.3.330.0000.00613.27
7.3.320.0030.00313.16
7.3.310.0050.00316.28
7.3.300.0040.00416.31
7.3.290.0030.00516.25
7.3.280.0110.00516.32
7.3.270.0080.01117.40
7.3.260.0090.00616.32
7.3.250.0080.01216.38
7.3.240.0080.00916.46
7.3.230.0160.00616.50
7.3.210.0060.01216.61
7.3.200.0160.00016.26
7.3.190.0150.00616.25
7.3.180.0100.00716.43
7.3.170.0050.01116.47
7.3.160.0060.00916.31
7.3.130.0100.01014.92
7.3.120.0050.00914.79
7.3.110.0030.01214.62
7.3.100.0040.00814.63
7.3.90.0070.00814.76
7.3.80.0080.00514.73
7.3.70.0070.00514.45
7.3.60.0070.00514.78
7.3.50.0080.00514.68
7.3.40.0040.00714.64
7.3.30.0040.00814.75
7.3.20.0060.00516.59
7.3.10.0020.00916.58
7.3.00.0070.00716.66
7.2.330.0080.00916.36
7.2.320.0180.00016.54
7.2.310.0100.00716.44
7.2.300.0100.00616.55
7.2.290.0060.01216.82
7.2.260.0100.01014.80
7.2.250.0030.01014.93
7.2.240.0050.01114.97
7.2.230.0020.01414.85
7.2.220.0030.01415.22
7.2.210.0060.00515.01
7.2.200.0030.01115.10
7.2.190.0080.00714.79
7.2.180.0050.00915.00
7.2.170.0060.00715.00
7.2.160.0100.00514.94
7.2.150.0070.00416.76
7.2.140.0040.01016.71
7.2.130.0070.00716.80
7.2.120.0060.01016.75
7.2.110.0070.00816.85
7.2.100.0030.01016.83
7.2.90.0080.00516.77
7.2.80.0050.00716.73
7.2.70.0040.01016.70
7.2.60.0070.00816.82
7.2.50.0060.00816.87
7.2.40.0050.00916.65
7.2.30.0080.00816.98
7.2.20.0050.01116.86
7.2.10.0070.00716.95
7.2.00.0060.01017.39
7.1.330.0080.00315.71
7.1.320.0050.00915.54
7.1.310.0050.00715.66
7.1.300.0070.00615.80
7.1.290.0070.00715.77
7.1.280.0000.01215.90
7.1.270.0070.00715.67
7.1.260.0040.01115.84
7.1.250.0050.00815.73
7.1.240.0130.00215.67
7.1.230.0120.00315.76
7.1.220.0090.00715.79
7.1.210.0050.00815.70
7.1.200.0040.00615.59
7.1.190.0080.00615.73
7.1.180.0060.00915.72
7.1.170.0080.00715.82
7.1.160.0080.00515.75
7.1.150.0020.01115.84
7.1.140.0090.00715.79
7.1.130.0050.00815.82
7.1.120.0110.00915.70
7.1.110.0060.01015.71
7.1.100.0070.00816.52
7.1.90.0090.00815.43
7.1.80.0070.00815.67
7.1.70.0100.00716.17
7.1.60.0090.01217.03
7.1.50.0090.01122.02
7.1.40.0060.01015.72
7.1.30.0080.00915.78
7.1.20.0060.00815.65
7.1.10.0050.00715.61
7.1.00.0060.02917.84
7.0.330.0070.00715.36
7.0.320.0090.00915.18
7.0.310.0060.00715.18
7.0.300.0060.00815.15
7.0.290.0050.00815.16
7.0.280.0030.00815.30
7.0.270.0120.00715.27
7.0.260.0090.00715.28
7.0.250.0030.01115.34
7.0.240.0070.00815.28
7.0.230.0030.01015.24
7.0.220.0050.00515.26
7.0.210.0080.00715.28
7.0.200.0090.00615.89
7.0.190.0040.00715.17
7.0.180.0100.00315.33
7.0.170.0100.00515.32
7.0.160.0070.00415.09
7.0.150.0060.00615.34
7.0.140.0010.01115.26
7.0.130.0020.01115.43
7.0.120.0100.00415.20
7.0.110.0040.00715.22
7.0.100.0040.00615.07
7.0.90.0070.00515.43
7.0.80.0050.00715.04
7.0.70.0050.00715.42
7.0.60.0040.02316.77
7.0.50.0050.03516.22
7.0.40.0040.02415.39
7.0.30.0210.02615.68
7.0.20.0130.03015.60
7.0.10.0080.03115.59
7.0.00.0060.03415.50
5.6.400.0030.01314.29
5.6.390.0040.00714.28
5.6.380.0090.00714.12
5.6.370.0060.00714.27
5.6.360.0050.01114.21
5.6.350.0060.00814.43
5.6.340.0080.00514.34
5.6.330.0090.00414.18
5.6.320.0080.00714.38
5.6.310.0030.00714.30
5.6.300.0050.00914.29
5.6.290.0060.01114.28
5.6.280.0050.02316.51
5.6.270.0040.00914.24
5.6.260.0050.00814.32
5.6.250.0070.01014.28
5.6.240.0090.00714.30
5.6.230.0080.00614.19
5.6.220.0100.00614.16
5.6.210.0120.02616.29
5.6.200.0090.02815.50
5.6.190.0110.03016.33
5.6.180.0150.02016.34
5.6.170.0130.02516.39
5.6.160.0060.01916.54
5.6.150.0040.03415.62
5.6.140.0100.01915.59
5.6.130.0070.02115.53
5.6.120.0090.03116.56
5.6.110.0070.01616.49
5.6.100.0060.01616.66
5.6.90.0070.03216.66
5.6.80.0110.02816.21
5.6.70.0030.00914.18
5.6.60.0030.01014.26
5.6.50.0050.00914.20
5.6.40.0060.00614.11
5.6.30.0060.00414.22
5.6.20.0050.00514.00
5.6.10.0100.00114.15
5.6.00.0020.00914.19
5.5.380.0040.00712.49
5.5.370.0060.00512.59
5.5.360.0110.00112.48
5.5.350.1330.02015.19
5.5.340.0070.03014.47
5.5.330.0050.02315.15
5.5.320.0030.03515.23
5.5.310.0110.02015.15
5.5.300.0050.01914.40
5.5.290.0030.01914.36
5.5.280.0050.03115.18
5.5.270.0070.03115.01
5.5.260.0030.02715.24
5.5.250.0080.03115.29
5.5.240.0140.02615.19
5.5.230.0070.00312.68
5.5.220.0030.00512.67
5.5.210.0030.00512.37
5.5.200.0070.00412.35
5.5.190.0040.00512.49
5.5.180.0040.00712.70
5.5.170.0020.00512.62
5.5.160.0050.00712.22
5.5.150.0050.00712.55
5.5.140.0000.01212.36
5.5.130.0060.00512.30
5.5.120.0050.00712.68
5.5.110.0050.00412.42
5.5.100.0050.00512.73
5.5.90.0050.00312.65
5.5.80.0030.00812.47
5.5.70.0060.00412.21
5.5.60.0060.00812.42
5.5.50.0030.00912.55
5.5.40.0050.00812.63
5.5.30.0060.00612.54
5.5.20.0110.00612.46
5.5.10.0080.00612.15
5.5.00.0060.00612.63

preferences:
33.45 ms | 401 KiB | 5 Q