3v4l.org

run code in 300+ PHP versions simultaneously
<?php $hashes = array() $collisions = 0; for($i=0, $i < 60000, $i++){ $hash = hash("crc32", $i); if (in_array($hash, $hashes)) { $collisions++; } } echo $collisions; ?>

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)
5.4.320.0100.04412.49
5.4.310.0090.04812.49
5.4.300.0100.04712.50
5.4.290.0070.05212.49
5.4.280.0090.04512.39
5.4.270.0080.05012.39
5.4.260.0060.05212.39
5.4.250.0090.05112.39
5.4.240.0070.05212.39
5.4.230.0070.05112.38
5.4.220.0090.04512.38
5.4.210.0130.04412.38
5.4.200.0090.05012.38
5.4.190.0120.04512.38
5.4.180.0100.04812.38
5.4.170.0090.05812.38
5.4.160.0120.07712.38
5.4.150.0090.05712.38
5.4.140.0110.05312.07
5.4.130.0130.04812.05
5.4.120.0090.05012.02
5.4.110.0140.05412.02
5.4.100.0080.03612.01
5.4.90.0050.03912.01
5.4.80.0070.03712.01
5.4.70.0080.03912.00
5.4.60.0110.05012.01
5.4.50.0100.03412.01
5.4.40.0050.03812.00
5.4.30.0090.04711.99
5.4.20.0080.04511.98
5.4.10.0150.05511.99
5.4.00.0070.05511.49
5.3.290.0100.05512.80
5.3.280.0070.06012.71
5.3.270.0050.04112.73
5.3.260.0030.04312.72
5.3.250.0080.03512.72
5.3.240.0090.05212.72
5.3.230.0090.03812.70
5.3.220.0080.04712.68
5.3.210.0050.04912.68
5.3.200.0060.03712.68
5.3.190.0050.04012.68
5.3.180.0070.03612.68
5.3.170.0050.03912.67
5.3.160.0100.03212.68
5.3.150.0040.04012.68
5.3.140.0040.03912.66
5.3.130.0080.05212.66
5.3.120.0070.03912.66
5.3.110.0050.04112.65
5.3.100.0030.03912.11
5.3.90.0060.04012.08
5.3.80.0110.04212.08
5.3.70.0040.03712.07
5.3.60.0070.03812.07
5.3.50.0070.03812.00
5.3.40.0060.03712.00
5.3.30.0070.03311.95
5.3.20.0070.04911.73
5.3.10.0070.04111.70
5.3.00.0060.03711.68
5.2.170.0040.0309.18
5.2.160.0030.0309.18
5.2.150.0050.0299.18
5.2.140.0050.0299.18
5.2.130.0050.0289.14
5.2.120.0060.0279.14
5.2.110.0070.0359.15
5.2.100.0040.0389.14
5.2.90.0030.0349.14
5.2.80.0080.0389.14
5.2.70.0040.0339.14
5.2.60.0000.0369.09
5.2.50.0050.0309.06
5.2.40.0030.0319.04
5.2.30.0030.0349.02
5.2.20.0050.0309.00
5.2.10.0070.0288.93
5.2.00.0040.0328.79
5.1.60.0070.0278.06
5.1.50.0050.0268.06
5.1.40.0060.0338.05
5.1.30.0070.0358.39
5.1.20.0050.0368.41
5.1.10.0080.0308.14
5.1.00.0030.0378.14
5.0.50.0080.0226.62
5.0.40.0050.0186.48
5.0.30.0050.0306.29
5.0.20.0050.0206.26
5.0.10.0040.0276.25
5.0.00.0040.0386.23
4.4.90.0030.0214.78
4.4.80.0030.0204.76
4.4.70.0050.0184.75
4.4.60.0010.0214.75
4.4.50.0040.0254.77
4.4.40.0030.0244.71
4.4.30.0020.0164.76
4.4.20.0040.0154.85
4.4.10.0050.0224.85
4.4.00.0010.0274.76
4.3.110.0060.0134.67
4.3.100.0000.0184.66
4.3.90.0050.0134.64
4.3.80.0020.0254.58
4.3.70.0030.0174.63
4.3.60.0040.0204.63
4.3.50.0030.0214.63
4.3.40.0020.0274.54
4.3.30.0010.0173.29
4.3.20.0020.0163.26
4.3.10.0020.0153.22
4.3.00.0000.01713.25

preferences:
150.95 ms | 1386 KiB | 7 Q