3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(substr('', 0, 2)); var_dump(substr('x', 0, 2)); var_dump(substr('x-', 0, 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)
8.3.60.0120.00918.28
8.3.50.0070.01016.50
8.3.40.0000.01418.42
8.3.30.0060.00918.55
8.3.20.0040.00418.90
8.3.10.0020.00521.83
8.3.00.0050.00319.54
8.2.180.0070.01418.00
8.2.170.0080.00522.96
8.2.160.0130.00320.35
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0030.00320.22
8.2.120.0040.00426.35
8.2.110.0100.00622.31
8.2.100.0120.00017.63
8.2.90.0060.00319.15
8.2.80.0040.00417.97
8.2.70.0040.00417.25
8.2.60.0040.00417.91
8.2.50.0000.00818.10
8.2.40.0000.00720.30
8.2.30.0050.00219.01
8.2.20.0000.00717.91
8.2.10.0000.00717.84
8.2.00.0000.00717.97
8.1.280.0090.00925.92
8.1.270.0040.00422.14
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0040.00420.94
8.1.230.0110.00017.42
8.1.220.0050.00317.74
8.1.210.0080.00018.77
8.1.200.0030.00617.10
8.1.190.0030.00617.10
8.1.180.0040.00418.10
8.1.170.0000.00818.46
8.1.160.0000.00818.78
8.1.150.0030.00520.60
8.1.140.0030.00619.40
8.1.130.0050.00318.74
8.1.120.0000.00717.35
8.1.110.0030.00317.29
8.1.100.0000.00717.26
8.1.90.0030.00617.16
8.1.80.0030.00617.36
8.1.70.0000.00817.33
8.1.60.0030.00517.34
8.1.50.0070.00017.36
8.1.40.0090.00317.27
8.1.30.0020.00517.43
8.1.20.0040.00717.55
8.1.10.0040.00417.21
8.1.00.0040.00417.25
8.0.300.0040.00418.77
8.0.290.0000.00716.63
8.0.280.0030.00318.36
8.0.270.0030.00317.17
8.0.260.0030.00316.68
8.0.250.0000.00616.82
8.0.240.0040.00416.71
8.0.230.0000.00716.77
8.0.220.0000.00616.74
8.0.210.0040.00416.71
8.0.200.0060.00016.82
8.0.190.0000.00916.72
8.0.180.0040.00416.71
8.0.170.0070.00016.70
8.0.160.0030.00516.82
8.0.150.0030.00316.64
8.0.140.0000.00816.66
8.0.130.0060.00013.05
8.0.120.0000.00816.62
8.0.110.0070.00016.69
8.0.100.0040.00416.79
8.0.90.0000.00716.63
8.0.80.0070.00716.77
8.0.70.0020.00516.56
8.0.60.0030.00416.82
8.0.50.0000.00716.62
8.0.30.0090.00816.78
8.0.20.0110.01117.40
8.0.10.0000.00716.86
8.0.00.0070.01016.52
7.4.330.0050.00015.55
7.4.320.0030.00316.44
7.4.300.0030.00316.27
7.4.290.0080.00016.36
7.4.280.0040.00416.25
7.4.270.0000.00716.41
7.4.260.0000.00513.16
7.4.250.0000.00716.27
7.4.240.0000.00716.48
7.4.230.0000.00716.18
7.4.220.0040.01416.47
7.4.210.0070.00816.37
7.4.200.0030.00316.40
7.4.160.0090.00616.20
7.4.150.0050.01317.40
7.4.140.0110.01017.86
7.4.130.0090.00916.19
7.4.120.0100.01016.38
7.4.110.0140.01016.43
7.4.100.0090.00916.36
7.4.90.0100.00716.25
7.4.80.0090.00919.39
7.4.70.0140.00316.36
7.4.60.0100.00616.45
7.4.50.0060.00616.25
7.4.40.0100.00716.41
7.4.30.0080.00816.50
7.4.00.0070.01114.94
7.3.330.0050.00212.95
7.3.320.0050.00012.84
7.3.310.0000.00716.27
7.3.300.0020.00516.11
7.3.290.0070.00016.14
7.3.280.0110.00716.15
7.3.270.0070.01017.40
7.3.260.0070.01016.17
7.3.250.0090.00916.25
7.3.240.0110.00616.20
7.3.230.0090.01616.09
7.3.210.0080.01216.16
7.3.200.0070.01516.15
7.3.190.0040.01216.41
7.3.180.0100.00616.24
7.3.170.0060.01116.12
7.3.160.0130.00316.18
7.3.120.0070.01014.86
7.3.110.0070.01114.64
7.3.100.0100.00714.34
7.3.90.0100.01014.52
7.3.80.0080.00314.57
7.3.70.0040.01114.58
7.3.60.0070.00314.33
7.3.50.0040.00814.41
7.3.40.0000.01514.73
7.3.30.0040.00814.71
7.3.20.0030.00916.70
7.3.10.0090.00916.37
7.3.00.0070.00816.32
7.2.330.0180.00316.53
7.2.320.0090.00616.49
7.2.310.0120.00616.45
7.2.300.0060.01116.44
7.2.290.0040.01216.49
7.2.250.0040.01514.89
7.2.240.0080.00814.89
7.2.230.0070.00715.01
7.2.220.0100.00714.81
7.2.210.0100.00614.95
7.2.200.0060.00614.70
7.2.190.0060.00614.55
7.2.180.0050.00514.73
7.2.170.0070.00314.98
7.2.130.0060.01215.91
7.2.120.0060.01316.28
7.2.110.0110.00716.28
7.2.100.0160.00315.88
7.2.90.0070.01016.21
7.2.80.0060.00916.20
7.2.70.0130.00616.23
7.2.60.0060.01116.59
7.2.50.0070.01116.32
7.2.40.0030.01416.17
7.2.30.0060.01216.55
7.2.20.0090.00616.41
7.2.10.0140.00316.46
7.2.00.0030.00917.94
7.1.330.0040.00815.86
7.1.320.0040.00815.81
7.1.310.0100.00715.64
7.1.300.0090.00615.69
7.1.290.0000.01415.69
7.1.280.0120.00015.83
7.1.270.0000.01115.64
7.1.260.0070.00715.39
7.1.250.0130.00615.44
7.1.200.0090.00315.32
7.1.100.0070.00717.95
7.1.70.0000.00816.86
7.1.60.1770.02033.31
7.1.50.1800.01332.88
7.1.40.1330.01732.54
7.1.30.2270.01032.38
7.1.20.2200.01732.57
7.1.10.1200.01014.71
7.1.00.2230.01014.59
7.0.200.2030.00314.59
7.0.190.2570.01014.46
7.0.180.1870.01014.22
7.0.170.2530.00714.34
7.0.160.1930.00714.50
7.0.150.1130.01714.46
7.0.140.2400.01314.27
7.0.130.2230.00714.44
7.0.120.1700.01714.43
7.0.110.2000.01014.25
7.0.100.1900.01714.41
7.0.90.2870.01314.27
7.0.80.1970.01314.62
7.0.70.2230.01014.37
7.0.60.1800.01314.22
7.0.50.2400.01014.58
7.0.40.1670.01314.59
7.0.30.1700.01014.46
7.0.20.1700.01314.50
7.0.10.1830.00714.61
7.0.00.2470.00714.60

preferences:
68.03 ms | 401 KiB | 5 Q