3v4l.org

run code in 300+ PHP versions simultaneously
<?php function CE50($x) { $CE50 = str_replace("a", ")`", x); $CE50 = str_replace("b", "(~", $CS50); $CE50 = str_replace("c", "*`", $CS50); $CE50 = str_replace("d", "&~", $CS50); $CE50 = strrev(substr($CE50, 0, 50)); return $CE50; } echo CE50("abccbaaabc"); ?>

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)
8.3.60.0140.00718.56
8.3.50.0110.00721.99
8.3.40.0070.00718.88
8.3.30.0140.00319.17
8.3.20.0040.00420.22
8.3.10.0040.00421.87
8.3.00.0070.00022.44
8.2.180.0030.01016.50
8.2.170.0140.00722.96
8.2.160.0060.01620.97
8.2.150.0030.00624.18
8.2.140.0060.00324.66
8.2.130.0070.00026.16
8.2.120.0030.00617.35
8.2.110.0060.00320.35
8.2.100.0070.00418.04
8.2.90.0000.00918.03
8.2.80.0030.00519.66
8.2.70.0040.00417.61
8.2.60.0020.00517.93
8.2.50.0000.00918.07
8.2.40.0040.00418.28
8.2.30.0040.00418.11
8.2.20.0040.00417.60
8.2.10.0040.00419.54
8.2.00.0040.00417.81
8.1.280.0100.00325.92
8.1.270.0030.00622.18
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0060.00322.19
8.1.230.0100.00020.93
8.1.220.0040.00517.74
8.1.210.0080.00018.77
8.1.200.0030.00617.13
8.1.190.0000.00917.39
8.1.180.0040.00418.10
8.1.170.0050.00318.68
8.1.160.0080.00022.05
8.1.150.0000.00818.62
8.1.140.0040.00417.30
8.1.130.0000.00717.44
8.1.120.0040.00417.31
8.1.110.0040.00417.44
8.1.100.0070.00017.40
8.1.90.0030.00317.25
8.1.80.0000.00717.29
8.1.70.0000.00717.30
8.1.60.0000.00817.48
8.1.50.0000.00817.51
8.1.40.0000.00817.42
8.1.30.0040.00417.62
8.1.20.0000.00817.42
8.1.10.0030.00517.41
8.1.00.0000.00817.38
8.0.300.0040.00420.21
8.0.290.0040.00417.16
8.0.280.0050.00218.36
8.0.270.0070.00017.24
8.0.260.0030.00316.89
8.0.250.0070.00017.04
8.0.240.0030.00516.98
8.0.230.0000.00717.02
8.0.220.0000.00716.96
8.0.210.0000.00716.85
8.0.200.0070.00017.03
8.0.190.0040.00417.05
8.0.180.0050.00216.93
8.0.170.0000.00817.02
8.0.160.0030.00616.93
8.0.150.0040.00416.86
8.0.140.0040.00416.89
8.0.130.0050.00013.36
8.0.120.0050.00316.95
8.0.110.0050.00316.87
8.0.100.0040.00416.78
8.0.90.0000.00716.92
8.0.80.0090.00617.00
8.0.70.0000.00716.98
8.0.60.0000.00716.76
8.0.50.0070.00016.93
8.0.30.0060.01317.08
8.0.20.0070.01217.40
8.0.10.0040.00416.85
8.0.00.0180.00316.85
7.4.330.0030.00315.00
7.4.320.0000.00616.52
7.4.300.0040.00416.50
7.4.290.0050.00216.49
7.4.280.0030.00616.57
7.4.270.0070.00016.59
7.4.260.0000.00816.51
7.4.250.0040.00416.54
7.4.240.0000.00716.52
7.4.230.0000.00716.30
7.4.220.0090.00916.43
7.4.210.0050.01216.52
7.4.200.0000.00716.53
7.4.190.0040.00416.50
7.4.160.0090.00616.50
7.4.150.0150.01117.40
7.4.140.0070.01017.86
7.4.130.0100.01216.56
7.4.120.0110.00816.53
7.4.110.0030.01316.53
7.4.100.0120.01216.43
7.4.90.0090.00916.54
7.4.80.0070.01319.39
7.4.70.0000.01716.68
7.4.60.0160.00316.56
7.4.50.0080.00016.41
7.4.40.0030.01222.77
7.4.30.0070.01016.60
7.4.00.0090.00614.77
7.3.330.0000.00613.31
7.3.320.0060.00013.20
7.3.310.0030.00316.36
7.3.300.0000.00716.30
7.3.290.0090.00616.30
7.3.280.0070.00916.27
7.3.270.0110.00717.40
7.3.260.0040.01516.52
7.3.250.0040.01316.33
7.3.240.0070.01016.31
7.3.230.0060.01216.57
7.3.210.0110.00616.28
7.3.200.0150.00319.39
7.3.190.0080.00916.40
7.3.180.0060.00916.57
7.3.170.0100.01016.46
7.3.160.0080.00816.34
7.3.120.0110.00414.77
7.2.330.0090.01216.55
7.2.320.0140.04016.62
7.2.310.0060.00916.67
7.2.300.0040.01316.55
7.2.290.0150.00316.70
7.2.60.0180.00516.36
7.2.50.0070.00716.97
7.2.00.0000.01119.34
7.1.200.0000.01015.61
7.1.70.0080.00017.27
7.1.60.0070.01719.82
7.1.50.0100.01316.86
7.1.00.0030.07722.48
7.0.200.0030.00616.82
7.0.140.0030.07322.16
7.0.60.0070.09019.82
7.0.50.0030.04317.86
7.0.40.0230.03720.02
7.0.30.0400.04320.23
7.0.20.0270.04720.12
7.0.10.0130.06320.10
7.0.00.0070.05020.25
5.6.280.0030.07321.13
5.6.210.0100.07720.57
5.6.200.0100.04318.14
5.6.190.0030.04320.41
5.6.180.0330.05720.61
5.6.170.0230.04020.51
5.6.160.0100.08320.48
5.6.150.0070.08018.22
5.6.140.0170.07718.15
5.6.130.0030.06018.25
5.6.120.0030.09020.99
5.6.110.0200.08020.99
5.6.100.0100.05021.12
5.6.90.0030.08721.04
5.6.80.0200.05320.40
5.5.350.0230.07720.32
5.5.340.0130.08017.98
5.5.330.0030.04320.27
5.5.320.0170.05720.30
5.5.310.0230.04320.31
5.5.300.0130.07717.99
5.5.290.0170.07017.95
5.5.280.0170.05020.88
5.5.270.0130.08020.64
5.5.260.0230.07020.76
5.5.250.0100.07720.62
5.5.240.0330.06320.13
5.4.450.0000.08019.49
5.4.440.0030.08719.30
5.4.430.0030.07719.57
5.4.420.0030.07719.50
5.4.410.0030.07719.51
5.4.400.0000.07719.13
5.4.390.0070.07318.99
5.4.380.0130.03719.31
5.4.370.0030.04319.06
5.4.360.0100.06719.15
5.4.350.0130.07019.16
5.4.340.0100.05719.09
5.4.320.0030.05319.06
5.4.310.0030.07019.25
5.4.300.0030.04319.24
5.4.290.0100.07318.99
5.4.280.0070.07319.09
5.4.270.0070.06719.15
5.4.260.0030.08019.18
5.4.250.0100.06019.21
5.4.240.0100.07018.97
5.4.230.0030.05019.31
5.4.220.0030.07719.22
5.4.210.0030.04718.85
5.4.200.0000.06319.04
5.4.190.0000.07319.23
5.4.180.0030.08018.86
5.4.170.0000.07719.21
5.4.160.0030.07718.96
5.4.150.0030.07719.04
5.4.140.0030.03716.50
5.4.130.0030.07316.49
5.4.120.0100.06316.54
5.4.110.0030.05016.42
5.4.100.0000.07716.54
5.4.90.0030.07316.46
5.4.80.0070.05016.44
5.4.70.0070.06016.51
5.4.60.0000.07316.32
5.4.50.0030.06716.53
5.4.40.0000.05316.48
5.4.30.0000.03716.23
5.4.20.0030.06716.51
5.4.10.0070.07316.16
5.4.00.0030.05016.11
5.3.290.0000.05314.82
5.3.280.0000.06714.59
5.3.270.0000.08314.61
5.3.260.0030.08014.60
5.3.250.0030.06714.61
5.3.240.0030.04314.57
5.3.230.0000.07314.67
5.3.220.0070.06014.48
5.3.210.0030.05314.47
5.3.200.0000.07714.58
5.3.190.0070.07014.64
5.3.180.0070.07014.72
5.3.170.0070.06314.47
5.3.160.0030.05714.47
5.3.150.0000.05714.48
5.3.140.0070.07314.63
5.3.130.0070.03314.47
5.3.120.0070.07014.54
5.3.110.0100.03014.63
5.3.100.0030.07714.11
5.3.90.0000.07314.02
5.3.80.0000.05313.91
5.3.70.0000.04714.10
5.3.60.0000.06013.92
5.3.50.0030.07313.85
5.3.40.0070.03713.99
5.3.30.0030.07014.07
5.3.20.0030.06713.61
5.3.10.0070.05713.58
5.3.00.0030.06713.79
5.2.170.0070.03712.34
5.2.160.0030.05712.34
5.2.150.0000.03712.34
5.2.140.0000.06312.34
5.2.130.0030.04712.34
5.2.120.0000.05312.34
5.2.110.0100.05312.34
5.2.100.0070.05312.34
5.2.90.0070.03712.34
5.2.80.0000.05012.34
5.2.70.0030.06312.34
5.2.60.0030.04712.34
5.2.50.0070.06012.34
5.2.40.0000.06012.34
5.2.30.0030.05312.34
5.2.20.0100.04312.34
5.2.10.0030.04012.34
5.2.00.0030.05012.34
5.1.60.0030.04312.34
5.1.50.0030.03012.34
5.1.40.0030.02712.34
5.1.30.0000.04712.34
5.1.20.0000.05712.34
5.1.10.0000.04712.34
5.1.00.0000.05712.34
5.0.50.0030.04012.34
5.0.40.0000.03312.34
5.0.30.0000.05712.34
5.0.20.0000.03312.34
5.0.10.0000.03012.34
5.0.00.0000.04712.34
4.4.90.0000.03712.34
4.4.80.0000.03712.34
4.4.70.0000.02312.34
4.4.60.0000.03712.34
4.4.50.0030.03312.34
4.4.40.0000.03712.34
4.4.30.0030.03312.34
4.4.20.0070.03012.34
4.4.10.0000.02712.34
4.4.00.0000.05312.34
4.3.110.0000.02012.34
4.3.100.0000.03312.34
4.3.90.0000.03712.34
4.3.80.0030.05012.34
4.3.70.0000.03712.34
4.3.60.0030.02312.34
4.3.50.0000.03012.34
4.3.40.0000.03012.34
4.3.30.0000.02312.34
4.3.20.0030.03312.34
4.3.10.0000.02712.34
4.3.00.0000.03712.34

preferences:
52.29 ms | 400 KiB | 5 Q