3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = 'abcdefg'; $str = substr($var, 0, strlen($var) - 2);

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)
8.3.70.0090.00616.63
8.3.60.0070.00716.75
8.3.50.0100.00917.23
8.3.40.0100.01018.68
8.3.30.0040.01118.68
8.3.20.0070.00020.21
8.3.10.0000.00823.65
8.3.00.0000.00717.34
8.2.180.0070.00716.48
8.2.170.0110.00322.96
8.2.160.0170.00020.38
8.2.150.0050.00325.66
8.2.140.0080.00024.66
8.2.130.0000.00822.13
8.2.120.0060.00326.35
8.2.110.0060.00322.25
8.2.100.0120.00018.09
8.2.90.0000.00719.09
8.2.80.0080.00017.97
8.2.70.0040.00417.36
8.2.60.0000.00717.80
8.2.50.0060.00318.10
8.2.40.0050.00222.28
8.2.30.0000.00720.95
8.2.20.0020.00518.02
8.2.10.0030.00517.92
8.2.00.0040.00418.08
8.1.280.0000.01525.92
8.1.270.0080.00023.83
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0030.00722.19
8.1.230.0070.00417.45
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0030.00617.23
8.1.190.0090.00317.23
8.1.180.0000.00818.10
8.1.170.0040.00418.44
8.1.160.0000.00719.00
8.1.150.0030.00620.57
8.1.140.0000.00719.40
8.1.130.0000.00718.89
8.1.120.0030.00417.45
8.1.110.0070.00017.43
8.1.100.0070.00017.40
8.1.90.0030.00517.38
8.1.80.0000.00717.39
8.1.70.0050.00317.28
8.1.60.0030.00517.41
8.1.50.0060.00317.38
8.1.40.0040.00417.44
8.1.30.0040.00417.63
8.1.20.0000.00817.58
8.1.10.0070.00017.53
8.1.00.0070.00017.33
8.0.300.0000.00718.77
8.0.290.0030.00516.58
8.0.280.0070.00018.38
8.0.270.0040.00417.29
8.0.260.0070.00016.65
8.0.250.0030.00516.77
8.0.240.0030.00716.85
8.0.230.0070.00316.83
8.0.220.0040.00416.81
8.0.210.0000.00716.75
8.0.200.0030.00316.80
8.0.190.0060.00616.87
8.0.180.0000.01016.90
8.0.170.0070.00016.91
8.0.160.0000.00716.71
8.0.150.0070.00016.78
8.0.140.0000.00816.71
8.0.130.0000.00613.25
8.0.120.0040.00416.68
8.0.110.0040.00416.76
8.0.100.0070.00016.82
8.0.90.0050.00316.79
8.0.80.0060.00916.76
8.0.70.0040.00416.61
8.0.60.0090.00016.89
8.0.50.0040.00416.85
8.0.30.0080.00817.14
8.0.20.0100.01017.40
8.0.10.0040.00416.73
8.0.00.0050.01116.70
7.4.330.0030.00315.55
7.4.320.0000.00716.43
7.4.300.0050.00216.48
7.4.290.0070.00016.43
7.4.280.0000.00816.53
7.4.270.0080.00016.35
7.4.260.0030.00313.10
7.4.250.0030.00316.51
7.4.240.0030.00416.43
7.4.230.0000.00716.59
7.4.220.0140.00716.51
7.4.210.0040.01116.53
7.4.200.0070.00016.49
7.4.160.0110.00716.48
7.4.150.0070.01617.40
7.4.140.0100.01017.86
7.4.130.0070.01116.32
7.4.120.0130.00716.53
7.4.110.0120.00616.50
7.4.100.0120.00616.34
7.4.90.0090.00916.41
7.4.80.0100.00719.39
7.4.70.0070.01416.35
7.4.60.0110.00716.61
7.4.50.0090.00516.36
7.4.40.0060.01216.55
7.4.30.0090.00616.58
7.4.10.0000.01516.16
7.4.00.0080.00615.60
7.3.330.0060.00013.12
7.3.320.0020.00213.13
7.3.310.0030.00316.08
7.3.300.0030.00316.25
7.3.290.0080.00916.28
7.3.280.0110.00616.25
7.3.270.0070.01017.40
7.3.260.0120.00616.28
7.3.250.0110.00816.42
7.3.240.0100.01116.40
7.3.230.0140.00716.48
7.3.210.0100.00716.28
7.3.200.0080.00816.26
7.3.190.0080.01116.35
7.3.180.0040.01116.21
7.3.170.0030.01316.26
7.3.160.0110.00616.48
7.3.130.0160.00016.36
7.3.120.0030.01416.34
7.3.110.0030.01016.39
7.3.100.0060.00916.13
7.3.90.0070.00316.34
7.3.80.0090.00916.10
7.3.70.0070.00716.23
7.3.60.0100.00016.24
7.3.50.0040.01116.16
7.3.40.0000.01616.25
7.3.30.0040.01216.13
7.3.20.0060.00918.07
7.3.10.0030.01018.02
7.3.00.0000.01118.25
7.2.330.0090.00916.74
7.2.320.0130.00416.59
7.2.310.0060.01216.65
7.2.300.0160.00316.37
7.2.290.0110.00916.65
7.2.260.0070.01316.33
7.2.250.0030.01516.38
7.2.240.0100.00316.58
7.2.230.0030.01216.54
7.2.220.0030.01516.62
7.2.210.0110.00616.61
7.2.200.0070.00716.36
7.2.190.0060.00616.35
7.2.180.0030.01016.33
7.2.170.0050.00516.60
7.2.160.0040.01116.46
7.2.150.0040.00718.40
7.2.140.0110.00318.29
7.2.130.0000.01418.38
7.2.120.0000.01118.25
7.2.110.0060.01218.31
7.2.100.0090.00318.39
7.2.90.0060.00618.48
7.2.80.0060.00918.46
7.2.70.0070.01018.23
7.2.60.0080.00717.38
7.2.50.0000.01518.29
7.2.40.0120.00618.21
7.2.30.0060.00618.32
7.2.20.0100.00318.25
7.2.10.0030.01418.26
7.2.00.0060.00818.77
7.1.330.0030.00617.31
7.1.320.0040.00717.36
7.1.310.0130.00317.23
7.1.300.0030.01017.25
7.1.290.0040.00717.41
7.1.280.0090.00617.28
7.1.270.0070.00717.30
7.1.260.0070.00317.21
7.1.250.0030.01017.30
7.1.240.0130.00317.14
7.1.230.0030.01217.18
7.1.220.0060.00317.25
7.1.210.0070.01017.22
7.1.200.0060.00716.53
7.1.190.0060.01017.34
7.1.180.0030.00617.22
7.1.170.0120.00017.43
7.1.160.0090.00317.46
7.1.150.0070.00717.23
7.1.140.0080.00417.32
7.1.130.0030.01017.19
7.1.120.0040.00817.14
7.1.110.0100.00717.38
7.1.100.0070.00517.69
7.1.90.0090.00317.14
7.1.80.0030.00917.25
7.1.70.1000.00816.20
7.1.60.1370.01525.11
7.1.50.1700.01325.05
7.1.40.1080.01224.91
7.1.30.1410.00724.95
7.1.20.1480.01124.95
7.1.10.0770.00915.93
7.1.00.1490.00816.04
7.0.330.0040.01517.00
7.0.320.0070.00717.08
7.0.310.0080.00616.73
7.0.300.0140.00016.93
7.0.290.0110.00317.09
7.0.280.0040.00716.92
7.0.270.0090.00317.00
7.0.260.0000.01516.91
7.0.250.0070.00716.85
7.0.240.0070.00716.99
7.0.230.0090.00317.07
7.0.220.0030.00816.92
7.0.210.0070.00717.17
7.0.200.2000.00815.80
7.0.190.1600.01115.82
7.0.180.1670.00715.66
7.0.170.1820.00515.83
7.0.160.1720.00515.63
7.0.150.0800.01015.71
7.0.140.1780.00515.77
7.0.130.1750.01515.51
7.0.120.1630.01515.73
7.0.110.1460.00715.73
7.0.100.1770.00715.88
7.0.90.1480.00515.81
7.0.80.1580.01015.74
7.0.70.1550.00515.80
7.0.60.1490.00615.58
7.0.50.1790.01215.70
7.0.40.1820.01014.78
7.0.30.1460.00514.85
7.0.20.1110.00414.73
7.0.10.1610.00614.70
7.0.00.0610.00814.89
5.6.400.0070.00715.82
5.6.390.0030.00715.79
5.6.380.0030.00915.74
5.6.370.0120.00615.86
5.6.360.0030.01015.45
5.6.350.0100.01015.63
5.6.340.0110.00415.80
5.6.330.0060.00715.78
5.6.320.0110.00415.73
5.6.310.0000.01415.57
5.6.300.0030.01015.89
5.6.290.0060.00915.88
5.6.280.0030.00915.85
5.6.270.0000.01415.70
5.6.260.0060.00915.95
5.6.250.0070.01015.63
5.6.240.0030.00915.80
5.6.230.0030.01015.89
5.6.220.0060.00615.73
5.6.210.0030.01015.82
5.6.200.0070.01015.83
5.6.190.0110.00015.83
5.6.180.0030.01015.86
5.6.170.0060.00915.59
5.6.160.0090.00315.72
5.6.150.0070.01015.74
5.6.140.0110.00715.65
5.6.130.0040.01515.71
5.6.120.0070.01015.93
5.6.110.0100.00715.51
5.6.100.0070.00715.87
5.6.90.0110.00415.71
5.6.80.0110.00415.78
5.6.70.0060.00915.61
5.6.60.0040.00815.96
5.6.50.0030.00615.73
5.6.40.0080.00815.74
5.6.30.0110.00415.62
5.6.20.0060.01015.88
5.6.10.0100.00615.48
5.6.00.0000.01515.51

preferences:
76.57 ms | 401 KiB | 5 Q