3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo substr('�5.5', 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)
8.3.60.0060.01218.18
8.3.50.0000.01416.43
8.3.40.0110.00418.73
8.3.30.0160.00618.64
8.3.20.0040.00421.60
8.3.10.0000.00823.48
8.3.00.0040.00418.87
8.2.180.0040.01116.38
8.2.170.0170.00322.96
8.2.160.0090.00620.39
8.2.150.0080.00024.18
8.2.140.0030.00524.66
8.2.130.0040.00417.91
8.2.120.0040.00426.35
8.2.110.0000.00920.82
8.2.100.0060.00617.78
8.2.90.0000.00817.78
8.2.80.0050.00619.77
8.2.70.0060.00317.90
8.2.60.0030.00517.50
8.2.50.0040.00418.10
8.2.40.0050.00220.60
8.2.30.0070.00019.42
8.2.20.0000.00718.04
8.2.10.0030.00517.85
8.2.00.0000.00717.90
8.1.280.0040.01125.92
8.1.270.0050.00322.14
8.1.260.0030.00526.35
8.1.250.0040.00428.09
8.1.240.0060.00322.14
8.1.230.0070.00421.04
8.1.220.0040.00417.79
8.1.210.0040.00418.83
8.1.200.0060.00317.10
8.1.190.0030.00717.10
8.1.180.0070.00018.10
8.1.170.0050.00218.84
8.1.160.0040.00418.67
8.1.150.0040.00418.94
8.1.140.0040.00417.48
8.1.130.0070.00020.30
8.1.120.0040.00417.27
8.1.110.0070.00017.38
8.1.100.0070.00317.31
8.1.90.0040.00417.27
8.1.80.0000.00717.27
8.1.70.0070.00017.26
8.1.60.0030.00617.33
8.1.50.0040.00417.32
8.1.40.0040.00417.41
8.1.30.0000.00717.52
8.1.20.0030.00617.38
8.1.10.0030.00617.39
8.1.00.0030.00617.37
8.0.300.0030.00619.73
8.0.290.0040.00416.63
8.0.280.0070.00018.37
8.0.270.0000.00717.18
8.0.260.0000.00917.08
8.0.250.0070.00016.91
8.0.240.0030.00316.84
8.0.230.0000.01116.74
8.0.220.0000.01016.66
8.0.210.0000.00716.73
8.0.200.0080.00016.79
8.0.190.0030.00516.80
8.0.180.0040.00416.77
8.0.170.0060.00316.78
8.0.160.0000.00716.66
8.0.150.0030.00316.65
8.0.140.0030.00616.63
8.0.130.0050.00013.19
8.0.120.0070.00016.63
8.0.110.0040.00416.77
8.0.100.0040.00416.61
8.0.90.0040.00416.61
8.0.80.0060.01016.80
8.0.70.0000.00716.75
8.0.60.0040.00416.65
8.0.50.0050.00316.75
8.0.30.0090.00916.91
8.0.20.0140.00717.40
8.0.10.0050.00216.91
8.0.00.0100.01116.64
7.4.330.0020.00215.55
7.4.320.0030.00316.38
7.4.300.0060.00016.38
7.4.290.0030.00316.46
7.4.280.0000.00716.46
7.4.270.0070.00016.39
7.4.260.0000.00716.42
7.4.250.0000.00716.41
7.4.240.0040.00416.38
7.4.230.0050.00216.56
7.4.220.0070.00016.52
7.4.210.0070.00716.45
7.4.200.0050.00216.46
7.4.160.0090.01016.38
7.4.140.0140.00717.86
7.4.130.0110.00716.27
7.4.120.0090.00916.38
7.4.110.0100.00716.43
7.4.100.0100.00616.57
7.4.90.0140.00316.39
7.4.80.0130.00719.39
7.4.70.0120.00316.44
7.4.60.0080.00816.34
7.4.50.0040.01116.39
7.4.40.0030.01316.43
7.4.00.0110.00715.07
7.3.330.0020.00213.00
7.3.320.0000.00612.87
7.3.310.0030.00316.26
7.3.300.0030.00316.11
7.3.290.0030.00316.17
7.3.280.0050.01316.13
7.3.260.0110.00816.40
7.3.240.0090.00816.19
7.3.230.0110.00716.09
7.3.210.0130.00316.23
7.3.200.0140.00715.91
7.3.190.0100.01016.40
7.3.180.0070.00716.02
7.3.170.0000.01616.17
7.3.160.0050.01116.17
7.3.120.0060.01014.73
7.3.110.0070.01114.65
7.3.100.0060.00314.73
7.3.90.0070.00714.80
7.3.80.0030.01014.51
7.3.70.0090.00914.65
7.3.60.0070.01014.71
7.3.50.0080.00414.61
7.3.40.0000.01114.74
7.3.30.0100.00314.63
7.3.20.0030.01216.45
7.3.10.0060.00616.42
7.3.00.0030.00916.32
7.2.330.0120.01216.24
7.2.320.0130.00316.36
7.2.310.0040.01216.20
7.2.300.0150.00616.42
7.2.290.0060.01916.23
7.2.250.0140.00314.91
7.2.240.0000.02014.80
7.2.230.0100.00314.81
7.2.220.0090.00914.69
7.2.210.0130.00414.65
7.2.200.0030.01014.86
7.2.190.0090.00614.60
7.2.180.0070.01014.82
7.2.170.0040.00814.83
7.2.60.0000.01316.54
7.2.40.0730.01318.02
7.2.30.0670.01117.63
7.2.20.1230.01317.76
7.2.10.0960.01217.82
7.2.00.0630.01117.73
7.1.330.0030.01015.37
7.1.320.0130.00315.73
7.1.310.0000.01415.71
7.1.300.0090.00615.34
7.1.290.0090.00615.55
7.1.280.0000.01415.52
7.1.270.0120.00315.41
7.1.260.0040.00715.76
7.1.200.0000.01315.57
7.1.160.0820.01016.82
7.1.150.0850.01416.91
7.1.140.0750.01616.62
7.1.130.0460.01316.77
7.1.120.0730.01316.76
7.1.110.0740.01316.00
7.1.100.0710.01016.00
7.1.90.0550.00716.04
7.1.80.0490.00916.09
7.1.70.0470.01415.19
7.1.60.0670.01233.26
7.1.50.0870.01532.86
7.1.40.0850.01432.34
7.1.30.0850.01232.29
7.1.20.0800.01332.64
7.1.10.0640.01114.71
7.1.00.0480.00814.62

preferences:
56.62 ms | 400 KiB | 5 Q