3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo substr('abcdef', -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)
8.3.60.0180.00418.43
8.3.50.0190.00016.49
8.3.40.0110.00718.53
8.3.30.0120.00318.47
8.3.20.0070.00018.85
8.3.10.0040.00418.96
8.3.00.0040.00423.53
8.2.180.0110.00425.92
8.2.170.0110.00322.96
8.2.160.0070.00719.10
8.2.150.0080.00024.18
8.2.140.0070.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00420.96
8.2.110.0070.00421.12
8.2.100.0040.00817.59
8.2.90.0000.00917.78
8.2.80.0000.00918.22
8.2.70.0040.00417.80
8.2.60.0000.00817.93
8.2.50.0030.00618.10
8.2.40.0000.00719.16
8.2.30.0000.00719.28
8.2.20.0040.00417.98
8.2.10.0040.00417.92
8.2.00.0040.00419.30
8.1.280.0100.00725.92
8.1.270.0080.00022.16
8.1.260.0130.00726.35
8.1.250.0040.00428.09
8.1.240.0130.00320.69
8.1.230.0140.00022.11
8.1.220.0040.00417.74
8.1.210.0050.00318.91
8.1.200.0030.00617.23
8.1.190.0050.00316.88
8.1.180.0000.00818.10
8.1.170.0060.00318.44
8.1.160.0000.00818.65
8.1.150.0040.00418.66
8.1.140.0040.00417.48
8.1.130.0060.00319.97
8.1.120.0000.00717.26
8.1.110.0000.00717.30
8.1.100.0000.00717.34
8.1.90.0040.00417.33
8.1.80.0030.00617.26
8.1.70.0000.01017.34
8.1.60.0000.01117.46
8.1.50.0000.00817.42
8.1.40.0040.00417.38
8.1.30.0030.00617.40
8.1.20.0040.00417.44
8.1.10.0040.00417.36
8.1.00.0070.00017.27
8.0.300.0040.00419.81
8.0.290.0030.00516.63
8.0.280.0000.00718.38
8.0.270.0030.00317.23
8.0.260.0040.00420.04
8.0.250.0070.00016.82
8.0.240.0000.00716.90
8.0.230.0000.00716.78
8.0.220.0000.00716.75
8.0.210.0030.00316.81
8.0.200.0000.00716.79
8.0.190.0070.00016.86
8.0.180.0000.00816.79
8.0.170.0080.00016.65
8.0.160.0070.00016.77
8.0.150.0050.00316.67
8.0.140.0030.00516.75
8.0.130.0050.00013.26
8.0.120.0000.00716.79
8.0.110.0000.00716.82
8.0.100.0000.00716.75
8.0.90.0050.00216.63
8.0.80.0060.00916.74
8.0.70.0030.00516.78
8.0.60.0040.00416.73
8.0.50.0040.00416.62
8.0.30.0080.01016.98
8.0.20.0080.01217.40
8.0.10.0050.00216.71
8.0.00.0100.00916.67
7.4.330.0000.00515.55
7.4.320.0030.00316.38
7.4.300.0030.00316.44
7.4.290.0030.00316.35
7.4.280.0040.00416.43
7.4.270.0040.00416.26
7.4.260.0000.00716.41
7.4.250.0000.00816.43
7.4.240.0030.00316.46
7.4.230.0060.00016.35
7.4.220.0000.00816.56
7.4.210.0070.00916.47
7.4.200.0070.00016.57
7.4.160.0100.00916.54
7.4.140.0080.01217.86
7.4.130.0110.00716.28
7.4.120.0120.00816.36
7.4.110.0100.00916.32
7.4.100.0130.00516.43
7.4.90.0110.00716.23
7.4.80.0090.01217.86
7.4.70.0090.01216.47
7.4.60.0100.00916.29
7.4.50.0090.01016.35
7.4.40.0130.00616.19
7.4.30.0150.00316.25
7.4.20.0090.01216.04
7.4.10.0110.01116.29
7.4.00.0100.00915.28
7.3.330.0000.00512.88
7.3.320.0000.00512.90
7.3.310.0000.00816.27
7.3.300.0060.00016.11
7.3.290.0070.00016.13
7.3.280.0080.00716.05
7.3.260.0120.00816.33
7.3.250.0140.00316.19
7.3.240.0060.01216.23
7.3.230.0110.00916.22
7.3.220.0110.00716.16
7.3.210.0090.00816.27
7.3.200.0150.00716.29
7.3.190.0130.00416.09
7.3.180.0130.00716.10
7.3.170.0110.00916.25
7.3.160.0100.00816.25
7.3.150.0090.00816.34
7.3.140.0070.01016.25
7.3.130.0120.01116.14
7.3.120.0100.01115.41
7.3.110.0100.00715.39
7.3.100.0080.01215.64
7.3.90.0100.01015.44
7.3.80.0040.01215.60
7.3.70.0140.00615.48
7.3.60.0070.00715.43
7.3.50.0110.00515.51
7.3.40.0080.00715.45
7.3.30.0080.00815.37
7.3.20.0090.01116.45
7.3.10.0080.00816.46
7.3.00.0060.00716.42
7.2.340.0130.00616.28
7.2.330.0120.00916.51
7.2.320.0130.00816.22
7.2.310.0090.01216.42
7.2.300.0020.01616.50
7.2.290.0170.00216.41
7.2.280.0070.01316.42
7.2.270.0180.00616.43
7.2.260.0110.00716.47
7.2.250.0110.00815.63
7.2.240.0100.00915.53
7.2.230.0090.01015.49
7.2.220.0090.00915.54
7.2.210.0070.01015.61
7.2.200.0110.00415.54
7.2.190.0040.01315.58
7.2.180.0060.01215.56
7.2.170.0130.00515.70
7.2.160.0100.01016.36
7.2.150.0200.01416.46
7.2.140.0090.00916.39
7.2.130.0110.00816.58
7.2.120.0080.00816.54
7.2.110.0240.00216.34
7.2.100.0090.00616.40
7.2.90.0060.01116.43
7.2.80.0080.00816.49
7.2.70.0050.01116.31
7.2.60.0850.00715.86
7.2.50.0800.00615.85
7.2.40.0710.00916.02
7.2.30.1020.00516.04
7.2.20.0870.00816.02
7.2.10.0820.00716.11
7.2.00.0780.01116.08
7.1.330.0110.00715.27
7.1.320.0080.00815.46
7.1.310.0060.00815.35
7.1.300.0080.00815.49
7.1.290.0090.00515.60
7.1.280.0080.00715.50
7.1.270.0070.00915.45
7.1.260.0090.01015.39
7.1.250.0050.00915.44
7.1.240.0070.01015.23
7.1.230.0150.00015.13
7.1.220.0100.00715.08
7.1.210.0130.00315.14
7.1.200.0110.00315.46
7.1.190.0090.01315.20
7.1.180.0090.00615.24
7.1.170.1210.01014.44
7.1.160.1370.01015.87
7.1.150.1290.00815.89
7.1.140.1140.00715.82
7.1.130.1190.01315.76
7.1.120.1490.01215.83
7.1.110.1390.00815.46
7.1.100.1170.01015.72
7.1.90.1450.00715.61
7.1.80.1290.00615.65
7.1.70.1330.00515.13
7.1.60.1400.01424.04
7.1.50.1390.01523.93
7.1.40.1370.01323.74
7.1.30.1340.00723.71
7.1.20.1240.00923.99
7.1.10.1220.00714.92
7.1.00.1570.00814.96
7.0.330.0100.00715.01
7.0.320.0070.01114.55
7.0.310.0050.01014.71
7.0.300.0110.01114.73
7.0.290.0120.00414.72
7.0.280.0090.00914.64
7.0.270.0030.01414.49
7.0.260.0060.01514.26
7.0.250.0130.00714.93
7.0.240.0130.01014.43
7.0.230.0090.00914.62
7.0.220.0140.00314.71
7.0.210.0040.01814.73
7.0.200.0060.01514.45
7.0.190.0070.01014.57
7.0.180.0080.00814.75
7.0.170.0150.00614.85
7.0.160.0170.00714.89
7.0.150.0100.01015.00
7.0.140.0110.01114.86
7.0.130.0100.00714.66
7.0.120.0430.00414.77
7.0.110.0110.00514.99
7.0.100.0080.00814.76
7.0.90.0050.01315.04
7.0.80.0100.00614.77
7.0.70.0050.01114.95
7.0.60.0130.00315.04
7.0.50.0050.01114.95
7.0.40.0060.00915.09
7.0.30.0110.00614.94
7.0.20.0030.01314.92
7.0.10.0070.01015.04
7.0.00.0070.01314.91
5.6.400.0070.01415.19
5.6.390.0090.01215.28
5.6.380.0110.00815.46
5.6.370.0090.00915.49
5.6.360.0060.01915.32
5.6.350.0100.01415.65
5.6.340.0030.01415.19
5.6.330.0100.01015.34
5.6.320.0060.01515.11
5.6.310.0070.01115.32
5.6.300.0150.00415.40
5.6.290.0130.01015.60
5.6.280.0060.01315.61
5.6.270.0170.00315.66
5.6.260.0090.01215.45
5.6.250.0130.00715.84
5.6.240.0070.01115.77
5.6.230.0080.01115.73
5.6.220.0060.01215.48
5.6.210.0090.00915.52
5.6.200.0070.01415.89
5.6.190.0110.00815.78
5.6.180.0190.00415.71
5.6.170.0120.01215.54
5.6.160.0110.00715.64
5.6.150.0120.00615.64
5.6.140.0120.00615.78
5.6.130.0040.01315.62
5.6.120.0070.01115.65
5.6.110.0060.01215.50
5.6.100.0090.01015.59
5.6.90.0090.01615.59
5.6.80.0090.00915.43
5.6.70.0030.01615.52
5.6.60.0100.00715.34
5.6.50.0090.00915.42
5.6.40.0100.01315.40
5.6.30.0100.01415.55
5.6.20.0060.01215.40
5.6.10.0130.01315.44
5.6.00.0080.01115.32

preferences:
53.68 ms | 401 KiB | 5 Q