3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(substr('aaaaaaaaaabbbbbbbbbcccccccc', 1000, 10);

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)
5.4.340.0090.03312.00
5.4.320.0090.03612.49
5.4.310.0120.03212.49
5.4.300.0040.03812.49
5.4.290.0070.03712.49
5.4.280.0050.03612.39
5.4.270.0050.04212.39
5.4.260.0040.04412.39
5.4.250.0060.03712.39
5.4.240.0050.04612.39
5.4.230.0060.03912.38
5.4.220.0050.04712.38
5.4.210.0070.04112.38
5.4.200.0060.04412.38
5.4.190.0050.04212.38
5.4.180.0060.03612.38
5.4.170.0100.03912.39
5.4.160.0060.03912.38
5.4.150.0120.05812.38
5.4.140.0060.04412.07
5.4.130.0040.04212.05
5.4.120.0050.03712.01
5.4.110.0040.03912.01
5.4.100.0050.03912.02
5.4.90.0080.03512.01
5.4.80.0100.03412.02
5.4.70.0100.03412.01
5.4.60.0090.04812.00
5.4.50.0060.05112.01
5.4.40.0160.04011.99
5.4.30.0120.04411.99
5.4.20.0090.04511.99
5.4.10.0080.04211.99
5.4.00.0110.03711.48
5.3.290.0110.05212.80
5.3.280.0070.04712.71
5.3.270.0080.03812.73
5.3.260.0050.04212.72
5.3.250.0070.03812.72
5.3.240.0080.03612.72
5.3.230.0070.03912.71
5.3.220.0110.03412.68
5.3.210.0100.04912.68
5.3.200.0190.08212.68
5.3.190.0130.05612.68
5.3.180.0080.04112.68
5.3.170.0080.03512.66
5.3.160.0080.03612.67
5.3.150.0090.03612.67
5.3.140.0050.04012.66
5.3.130.0040.04212.66
5.3.120.0080.03912.66
5.3.110.0110.03712.66
5.3.100.0090.04012.12
5.3.90.0080.04112.08
5.3.80.0070.04012.08
5.3.70.0120.03712.07
5.3.60.0090.04112.06
5.3.50.0100.03512.00
5.3.40.0120.04912.00
5.3.30.0080.03711.95
5.3.20.0100.03611.73
5.3.10.0030.04011.70
5.3.00.0060.03811.68
5.2.170.0050.0379.18
5.2.160.0070.0299.18
5.2.150.0050.0399.18
5.2.140.0110.0529.18
5.2.130.0080.0309.14
5.2.120.0140.0579.14
5.2.110.0070.0399.15
5.2.100.0070.0299.14
5.2.90.0060.0319.14
5.2.80.0060.0319.14
5.2.70.0050.0339.13
5.2.60.0140.0699.09
5.2.50.0050.0349.06
5.2.40.0060.0389.04
5.2.30.0160.0529.01
5.2.20.0070.0389.00
5.2.10.0100.0358.92
5.2.00.0080.0408.78
5.1.60.0050.0358.07
5.1.50.0050.0338.07
5.1.40.0060.0338.04
5.1.30.0070.0328.40
5.1.20.0040.0288.42
5.1.10.0070.0258.14
5.1.00.0030.0288.14
5.0.50.0030.0226.62
5.0.40.0030.0236.48
5.0.30.0070.0306.29
5.0.20.0040.0216.26
5.0.10.0030.0206.24
5.0.00.0040.0346.23
4.4.90.0040.0204.77
4.4.80.0050.0154.75
4.4.70.0030.0194.75
4.4.60.0050.0194.75
4.4.50.0050.0164.77
4.4.40.0040.0304.71
4.4.30.0040.0204.76
4.4.20.0030.0174.84
4.4.10.0030.0184.85
4.4.00.0040.0284.75
4.3.110.0020.0184.67
4.3.100.0000.0224.66
4.3.90.0050.0164.63
4.3.80.0000.0314.59
4.3.70.0030.0164.63
4.3.60.0040.0154.63
4.3.50.0040.0214.63
4.3.40.0020.0294.54
4.3.30.0030.0193.28
4.3.20.0030.0193.26
4.3.10.0030.0223.21
4.3.00.0130.0236.87

preferences:
136.3 ms | 1394 KiB | 7 Q