3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo substr( 'Z7E4L9SCPT83', -1 );

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)
8.3.70.0070.01116.58
8.3.60.0090.00918.14
8.3.50.0130.00721.02
8.3.40.0110.00418.62
8.3.30.0070.00720.18
8.3.20.0050.00320.43
8.3.10.0050.00320.93
8.3.00.0070.00023.69
8.2.180.0130.00316.50
8.2.170.0110.00422.96
8.2.160.0070.00720.57
8.2.150.0080.00024.18
8.2.140.0000.00724.66
8.2.130.0080.00026.16
8.2.120.0080.00021.11
8.2.110.0070.00319.29
8.2.100.0040.00717.72
8.2.90.0030.00619.05
8.2.80.0000.00719.16
8.2.70.0000.00817.50
8.2.60.0040.00417.80
8.2.50.0020.00518.07
8.2.40.0080.00319.64
8.2.30.0070.00019.30
8.2.20.0070.00017.49
8.2.10.0030.00617.50
8.2.00.0050.00317.42
8.1.280.0110.01125.92
8.1.270.0080.00023.99
8.1.260.0000.00726.35
8.1.250.0030.00528.09
8.1.240.0060.00322.37
8.1.230.0070.00420.79
8.1.220.0070.00018.77
8.1.210.0000.00818.91
8.1.200.0060.00317.23
8.1.190.0050.00317.28
8.1.180.0040.00418.10
8.1.170.0050.00318.29
8.1.160.0040.00418.73
8.1.150.0060.00318.41
8.1.140.0050.00217.23
8.1.130.0030.00517.66
8.1.120.0040.00417.32
8.1.110.0000.00817.35
8.1.100.0040.00417.24
8.1.90.0050.00217.34
8.1.80.0040.00417.33
8.1.70.0030.00617.20
8.1.60.0040.00417.28
8.1.50.0020.00517.22
8.1.40.0000.00717.38
8.1.30.0070.00017.52
8.1.20.0040.00417.47
8.1.10.0000.00717.35
8.1.00.0000.00717.26
8.0.300.0070.00019.88
8.0.290.0000.00717.16
8.0.280.0000.00718.41
8.0.270.0030.00317.13
8.0.260.0030.00516.74
8.0.250.0040.00416.91
8.0.240.0000.00716.87
8.0.230.0030.00316.85
8.0.220.0040.00416.75
8.0.210.0000.00716.58
8.0.200.0030.00316.83
8.0.190.0030.00316.72
8.0.180.0030.00516.84
8.0.170.0000.00716.66
8.0.160.0040.00416.72
8.0.150.0030.00516.61
8.0.140.0030.00616.71
8.0.130.0030.00313.20
8.0.120.0080.00016.58
8.0.110.0000.00816.74
8.0.100.0030.00616.84
8.0.90.0000.00816.81
8.0.80.0110.00416.71
8.0.70.0000.00716.81
8.0.60.0000.00716.63
8.0.50.0000.00816.70
8.0.30.0050.01316.99
8.0.20.0100.01217.40
8.0.10.0040.00416.78
8.0.00.0150.00716.74
7.4.330.0050.00016.84
7.4.320.0030.00316.42
7.4.300.0060.00016.27
7.4.290.0030.00316.25
7.4.280.0000.00616.36
7.4.270.0030.00316.35
7.4.260.0060.00013.13
7.4.250.0070.00016.33
7.4.240.0000.00716.29
7.4.230.0030.00316.36
7.4.220.0090.00916.47
7.4.210.0070.00916.35
7.4.200.0000.00716.25
7.4.190.0070.00016.30
7.4.160.0060.01016.43
7.4.150.0150.00317.40
7.4.140.0080.00917.86
7.4.130.0070.01116.32
7.4.120.0080.01016.47
7.4.110.0100.00716.39
7.4.100.0170.00716.48
7.4.90.0040.01316.23
7.4.80.0160.00619.39
7.4.70.0140.01116.29
7.4.60.0060.01316.26
7.4.50.0000.00816.38
7.4.40.0040.01122.77
7.4.30.0160.00716.04
7.4.00.0070.01014.90
7.3.330.0000.00512.88
7.3.320.0020.00213.03
7.3.310.0000.00616.02
7.3.300.0030.00416.14
7.3.290.0100.01016.16
7.3.280.0080.01216.10
7.3.270.0070.01017.40
7.3.260.0130.00818.24
7.3.250.0080.00816.41
7.3.240.0140.00716.02
7.3.230.0110.01116.39
7.3.210.0110.00616.09
7.3.200.0100.01319.39
7.3.190.0140.00716.16
7.3.180.0060.00916.43
7.3.170.0130.00316.27
7.3.160.0090.00616.30
7.3.120.0050.01014.80
7.3.110.0040.01414.67
7.3.100.0090.00914.60
7.3.90.0070.01014.67
7.3.80.0000.01514.88
7.3.70.0030.00714.77
7.3.60.0030.00714.55
7.3.50.0030.00614.57
7.3.40.0090.00614.66
7.3.30.0040.00814.52
7.3.20.0030.01016.40
7.3.10.0060.00916.34
7.3.00.0110.00016.64
7.2.330.0090.00916.46
7.2.320.0040.01516.57
7.2.310.0030.01516.39
7.2.300.0090.00916.30
7.2.290.0060.00916.47
7.2.250.0100.00814.70
7.2.240.0000.02114.59
7.2.230.0000.01814.83
7.2.220.0030.01414.78
7.2.210.0060.01014.71
7.2.200.0000.01414.91
7.2.190.0030.00914.71
7.2.180.0030.00914.86
7.2.170.0060.00914.34
7.1.330.0110.00415.52
7.1.320.0040.01115.86
7.1.310.0080.00415.73
7.1.300.0030.00915.56
7.1.290.0070.00715.84
7.1.280.0060.00615.55
7.1.270.0070.00715.69
7.1.260.0070.00715.73
7.1.100.0000.00717.93
7.1.70.0080.00017.07
7.1.60.0070.00417.21
7.1.50.0090.01216.78
7.1.00.0030.04022.43
7.0.200.0090.00616.68
7.0.140.0100.06322.12
7.0.100.0170.07320.16
7.0.90.0170.07319.89
7.0.80.0200.07720.01
7.0.70.0170.06020.00
7.0.60.0070.04019.91
7.0.50.0100.03720.38
7.0.40.0070.04019.96
7.0.30.0100.03720.08
7.0.20.0070.05020.15
7.0.10.0030.04320.13
7.0.00.0030.04320.06
5.6.280.0130.06021.08
5.6.250.0070.08720.62
5.6.240.0170.07720.68
5.6.230.0070.08020.56
5.6.220.0000.05720.66
5.6.210.0100.07720.55
5.6.200.0070.04321.04
5.6.190.0070.04020.92
5.6.180.0030.04720.93
5.6.170.0030.04721.04
5.6.160.0030.04721.01
5.6.150.0000.04721.00
5.6.140.0070.04020.93
5.6.130.0030.04021.02
5.6.120.0030.04721.05
5.6.110.0100.04021.10
5.6.100.0100.04021.06
5.6.90.0000.03720.99
5.6.80.0000.04320.50
5.6.70.0070.03720.42
5.6.60.0000.03720.32
5.6.50.0000.04320.45
5.6.40.0070.04020.31
5.6.30.0030.03320.44
5.6.20.0070.03720.42
5.6.10.0000.04320.48
5.6.00.0070.03720.48
5.5.380.0070.04720.43
5.5.370.0000.08320.45
5.5.360.0070.08020.42
5.5.350.0030.04320.46
5.5.340.0030.04020.87
5.5.330.0070.04020.79
5.5.320.0030.04020.64
5.5.310.0130.02720.89
5.5.300.0030.06020.77
5.5.290.0000.04720.75
5.5.280.0030.05020.85
5.5.270.0000.04720.91
5.5.260.0000.05020.75
5.5.250.0070.03720.44
5.5.240.0000.05020.21
5.5.230.0030.04020.14
5.5.220.0030.04320.17
5.5.210.0070.03320.30
5.5.200.0030.04020.22
5.5.190.0000.04320.27
5.5.180.0070.03320.22
5.5.160.0030.03320.14
5.5.150.0100.07320.21
5.5.140.0070.06320.14
5.5.130.0070.05720.14
5.5.120.0070.07020.21
5.5.110.0000.04720.11
5.5.100.0000.04320.07
5.5.90.0130.07020.15
5.5.80.0070.05020.00
5.5.70.0100.07320.13
5.5.60.0100.07320.00
5.5.50.0130.07320.08
5.5.40.0030.04020.14
5.5.30.0070.04020.02
5.5.20.0100.07320.08
5.5.10.0070.08320.03
5.5.00.0000.08320.09
5.4.450.0100.03719.30
5.4.440.0000.04319.39
5.4.430.0000.04719.22
5.4.420.0030.04019.11
5.4.410.0000.05019.22
5.4.400.0000.04318.79
5.4.390.0100.03019.07
5.4.380.0070.03319.00
5.4.370.0030.03319.23
5.4.360.0000.04319.12
5.4.350.0070.03318.95
5.4.340.0030.04319.12
5.4.320.0100.06719.10
5.4.310.0000.08319.03
5.4.300.0070.05719.04
5.4.290.0000.06018.98
5.4.280.0000.04019.25
5.4.270.0100.03019.07
5.4.260.0100.03018.96
5.4.250.0070.07318.94
5.4.240.0100.06319.11
5.4.230.0030.07319.14
5.4.220.0030.08019.14
5.4.210.0130.06019.04
5.4.200.0100.03018.98
5.4.190.0130.07319.10
5.4.180.0070.06018.80
5.4.170.0100.07019.04
5.4.160.0070.03319.01
5.4.150.0000.08318.95
5.4.140.0070.07716.06
5.4.130.0130.05316.42
5.4.120.0100.06716.36
5.4.110.0000.07716.43
5.4.100.0070.06316.32
5.4.90.0130.06316.34
5.4.80.0130.06316.39
5.4.70.0030.06716.42
5.4.60.0030.03716.21
5.4.50.0070.06016.19
5.4.40.0070.05716.36
5.4.30.0030.07316.18
5.4.20.0030.06716.28
5.4.10.0130.02316.30
5.4.00.0030.07715.81
5.3.290.0100.06714.65
5.3.280.0070.04314.58
5.3.270.0000.04014.53
5.3.260.0130.04014.51
5.3.250.0100.07014.55
5.3.240.0130.05714.60
5.3.230.0030.07714.53
5.3.220.0030.07714.55
5.3.210.0070.04014.41
5.3.200.0030.05014.52
5.3.190.0000.05014.43
5.3.180.0000.08314.55
5.3.170.0100.07014.50
5.3.160.0030.07714.43
5.3.150.0100.07014.50
5.3.140.0070.07314.49
5.3.130.0070.07714.54
5.3.120.0070.07314.53
5.3.110.0070.07314.53
5.3.100.0000.07713.94
5.3.90.0070.06013.93
5.3.80.0030.06313.87
5.3.70.0070.07313.95
5.3.60.0000.03713.85
5.3.50.0070.07313.95
5.3.40.0070.05013.90
5.3.30.0070.06713.89
5.3.20.0070.07013.63
5.3.10.0170.02013.64
5.3.00.0030.05713.65
5.2.170.0070.05711.10
5.2.160.0030.06011.21
5.2.150.0030.06311.05
5.2.140.0000.05311.05
5.2.130.0130.05311.09
5.2.120.0100.05310.93
5.2.110.0030.05010.94
5.2.100.0030.06010.93
5.2.90.0000.06310.95
5.2.80.0070.06011.09
5.2.70.0000.06311.05
5.2.60.0070.04711.04
5.2.50.0030.06010.98
5.2.40.0030.06310.84
5.2.30.0030.06310.97
5.2.20.0000.06310.82
5.2.10.0000.05710.91
5.2.00.0070.02710.77
5.1.60.0030.0379.97
5.1.50.0000.02710.02
5.1.40.0030.04310.01
5.1.30.0030.05710.36
5.1.20.0070.02710.29
5.1.10.0100.03710.10
5.1.00.0070.02310.11
5.0.50.0070.0438.37
5.0.40.0000.0308.44
5.0.30.0030.0608.22
5.0.20.0000.0478.18
5.0.10.0030.0438.11
5.0.00.0030.0678.14
4.4.90.0000.0378.11
4.4.80.0030.0378.11
4.4.70.0000.0338.11
4.4.60.0030.0208.11
4.4.50.0030.0278.11
4.4.40.0130.0378.11
4.4.30.0070.0278.11
4.4.20.0030.0138.11
4.4.10.0000.0208.11
4.4.00.0030.0508.11
4.3.110.0000.0378.11
4.3.100.0030.0278.11
4.3.90.0000.0278.11
4.3.80.0000.0478.11
4.3.70.0070.0308.11
4.3.60.0030.0178.11
4.3.50.0100.0308.11
4.3.40.0000.0478.11
4.3.30.0030.0378.11
4.3.20.0000.0308.11
4.3.10.0030.0308.11
4.3.00.0000.0178.11

preferences:
49.87 ms | 401 KiB | 5 Q