3v4l.org

run code in 300+ PHP versions simultaneously
<?php $b =123456; $a = substr($b, -3, 3); echo $a;

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)
8.3.60.0150.00316.50
8.3.50.0100.00316.16
8.3.40.0150.00018.89
8.3.30.0000.01518.59
8.3.20.0090.00020.39
8.3.10.0000.00823.70
8.3.00.0080.00019.13
8.2.180.0100.01017.98
8.2.170.0110.00422.96
8.2.160.0100.00720.35
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0070.00019.21
8.2.120.0000.00826.35
8.2.110.0040.00421.04
8.2.100.0110.00017.85
8.2.90.0080.00018.22
8.2.80.0060.00318.03
8.2.70.0040.00417.63
8.2.60.0040.00417.93
8.2.50.0040.00418.10
8.2.40.0080.00020.55
8.2.30.0050.00321.04
8.2.20.0000.00717.93
8.2.10.0000.00718.00
8.2.00.0050.00318.15
8.1.280.0070.00725.92
8.1.270.0050.00323.91
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0030.00622.54
8.1.230.0060.00620.97
8.1.220.0000.00917.74
8.1.210.0060.00318.77
8.1.200.0000.00817.35
8.1.190.0000.00817.23
8.1.180.0020.00518.10
8.1.170.0040.00718.53
8.1.160.0000.00718.96
8.1.150.0030.00718.87
8.1.140.0040.00419.55
8.1.130.0050.00518.76
8.1.120.0070.00017.40
8.1.110.0000.00717.37
8.1.100.0000.00717.39
8.1.90.0030.00717.43
8.1.80.0030.00517.30
8.1.70.0040.00417.40
8.1.60.0000.00917.52
8.1.50.0030.00517.46
8.1.40.0040.00417.43
8.1.30.0040.00417.47
8.1.20.0040.00717.61
8.1.10.0000.00817.42
8.1.00.0040.00417.46
8.0.300.0070.00020.18
8.0.290.0040.00416.75
8.0.280.0000.00718.35
8.0.270.0000.00717.27
8.0.260.0000.00716.82
8.0.250.0000.00716.86
8.0.240.0040.00416.97
8.0.230.0030.00316.78
8.0.220.0000.00716.81
8.0.210.0030.00316.83
8.0.200.0030.00316.88
8.0.190.0120.00016.80
8.0.180.0080.00016.75
8.0.170.0030.00516.75
8.0.160.0000.00716.77
8.0.150.0040.00416.81
8.0.140.0060.00616.71
8.0.130.0050.00013.21
8.0.120.0040.00416.85
8.0.110.0030.00316.86
8.0.100.0070.00016.86
8.0.90.0040.00416.79
8.0.80.0190.00316.82
8.0.70.0040.00316.64
8.0.60.0050.00216.82
8.0.50.0000.00716.86
8.0.30.0060.01316.91
8.0.20.0130.00717.40
8.0.10.0040.00416.90
8.0.00.0170.00616.52
7.4.330.0050.00015.55
7.4.320.0060.00016.44
7.4.300.0040.00416.55
7.4.290.0100.00016.45
7.4.280.0000.00716.44
7.4.270.0030.00316.38
7.4.260.0000.00716.53
7.4.250.0040.00416.55
7.4.240.0040.00416.49
7.4.230.0040.00416.64
7.4.220.0100.00716.61
7.4.210.0100.00316.54
7.4.200.0030.00316.54
7.4.160.0110.00616.38
7.4.150.0110.00817.40
7.4.140.0100.00817.86
7.4.130.0100.00716.59
7.4.120.0080.01016.38
7.4.110.0130.01016.36
7.4.100.0110.00916.45
7.4.90.0060.01116.55
7.4.80.0120.00619.39
7.4.70.0070.01016.41
7.4.60.0110.00816.33
7.4.50.0030.01316.61
7.4.40.0080.00816.42
7.4.30.0110.00616.40
7.4.10.0110.00214.75
7.4.00.0060.00914.83
7.3.330.0030.00313.04
7.3.320.0000.00612.93
7.3.310.0060.00016.18
7.3.300.0030.00316.29
7.3.290.0070.00916.17
7.3.280.0080.00916.21
7.3.270.0120.01217.40
7.3.260.0070.00916.22
7.3.250.0130.00916.32
7.3.240.0110.00516.35
7.3.230.0100.00716.27
7.3.210.0160.00316.14
7.3.200.0120.00616.50
7.3.190.0070.01116.35
7.3.180.0060.00916.24
7.3.170.0100.00716.45
7.3.160.0060.00916.17
7.3.130.0030.01014.84
7.3.120.0060.00714.97
7.3.110.0090.00914.83
7.3.100.0070.00514.76
7.3.90.0070.00714.80
7.3.80.0080.00714.67
7.3.70.0030.01014.55
7.3.60.0080.00814.71
7.3.50.0060.00514.76
7.3.40.0040.00614.77
7.3.30.0060.00714.63
7.3.20.0080.00716.57
7.3.10.0060.00816.55
7.3.00.0030.01016.58
7.2.330.0120.00616.72
7.2.320.0030.02016.57
7.2.310.0100.00616.31
7.2.300.0070.01016.23
7.2.290.0130.00316.65
7.2.260.0000.01815.23
7.2.250.0090.00914.90
7.2.240.0060.01215.13
7.2.230.0040.01214.81
7.2.220.0050.00915.00
7.2.210.0060.00815.03
7.2.200.0070.00614.95
7.2.190.0030.01114.79
7.2.180.0030.01115.01
7.2.170.0060.00814.78
7.2.160.0060.01015.03
7.2.150.0040.00716.86
7.2.140.0040.01116.88
7.2.130.0030.00716.98
7.2.120.0040.01116.94
7.2.110.0030.01616.68
7.2.100.0000.00916.67
7.2.90.0040.01216.96
7.2.80.0040.01116.88
7.2.70.0090.00617.09
7.2.60.0080.00616.73
7.2.50.0050.00516.93
7.2.40.0100.00316.93
7.2.30.0060.00916.87
7.2.20.0000.01316.91
7.2.10.0040.01116.81
7.2.00.0080.00717.81
7.1.330.0080.00515.81
7.1.320.0060.00715.81
7.1.310.0100.00515.81
7.1.300.0020.00815.89
7.1.290.0070.00715.59
7.1.280.0080.00615.91
7.1.270.0000.01015.73
7.1.260.0040.01215.89
7.1.250.0040.01115.78
7.1.240.0080.00815.98
7.1.230.0030.00915.82
7.1.220.0120.00015.75
7.1.210.0000.01515.73
7.1.200.0070.00715.67
7.1.190.0040.00415.62
7.1.180.0040.00815.93
7.1.170.0000.01515.61
7.1.160.0060.00315.55
7.1.150.0000.01215.79
7.1.140.0060.00315.63
7.1.130.0080.00415.82
7.1.120.0060.00615.87
7.1.110.0060.00915.73
7.1.100.0040.01016.73
7.1.90.0030.01415.86
7.1.80.0050.00515.86
7.1.70.0050.00916.27
7.1.60.0110.00925.29
7.1.50.0150.00525.07
7.1.40.0090.01424.94
7.1.30.0140.00525.00
7.1.20.0150.00524.98
7.1.10.0090.00516.17
7.1.00.0050.01016.32
7.0.330.0090.00915.36
7.0.320.0070.00715.38
7.0.310.0070.00715.29
7.0.300.0080.00415.41
7.0.290.0030.01015.42
7.0.280.0110.00015.60
7.0.270.0110.00315.30
7.0.260.0030.01215.49
7.0.250.0100.00315.43
7.0.240.0110.00715.58
7.0.230.0030.01315.52
7.0.220.0080.00415.47
7.0.210.0030.01015.12
7.0.200.0010.01216.06
7.0.190.0040.00816.02
7.0.180.0070.00715.83
7.0.170.0040.00715.63
7.0.160.0060.00915.72
7.0.150.0070.00415.64
7.0.140.0090.00715.92
7.0.130.0080.01015.93
7.0.120.0100.00415.94
7.0.110.0060.00615.86
7.0.100.0020.01215.68
7.0.90.0040.00615.89
7.0.80.0070.00715.98
7.0.70.0080.00815.83
7.0.60.0040.00715.66
7.0.50.0060.00815.90
7.0.40.0080.00514.92
7.0.30.0050.00914.91
7.0.20.0070.00814.97
7.0.10.0030.01114.91
7.0.00.0070.00914.94
5.6.400.0040.01113.80
5.6.390.0030.01214.16
5.6.380.0080.00813.89
5.6.370.0040.00714.11
5.6.360.0070.00414.19
5.6.350.0120.00314.34
5.6.340.0040.00814.23
5.6.330.0080.00814.11
5.6.320.0060.01214.41
5.6.310.0060.00314.30
5.6.300.0040.01114.14
5.6.290.0070.00714.13
5.6.280.0070.00714.39
5.6.270.0090.00614.51
5.6.260.0070.00414.39
5.6.250.0070.00714.02
5.6.240.0030.00614.30
5.6.230.0070.00714.32
5.6.220.0100.00014.17
5.6.210.0030.00614.20
5.6.200.0030.00914.31
5.6.190.0100.00014.09
5.6.180.0110.00414.21
5.6.170.0130.00314.24
5.6.160.0100.00014.10
5.6.150.0080.00614.42
5.6.140.0110.00314.13
5.6.130.0080.00814.22
5.6.120.0070.01014.33
5.6.110.0050.00314.15
5.6.100.0060.00614.32
5.6.90.0070.01014.25
5.6.80.0040.01114.14
5.6.70.0060.00913.92
5.6.60.0030.00714.08
5.6.50.0060.00914.17
5.6.40.0060.01014.09
5.6.30.0000.01014.07
5.6.20.0000.01014.02
5.6.10.0120.00414.27
5.6.00.0030.01514.27

preferences:
55.38 ms | 400 KiB | 5 Q