3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = []; $a[] = &$b = 1; $a[0] = 2; echo $b;

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)
5.4.350.0090.03912.02
5.4.340.0120.03212.00
5.4.320.0090.04012.50
5.4.310.0110.04112.49
5.4.300.0050.04212.49
5.4.290.0100.04712.49
5.4.280.0070.05112.39
5.4.270.0080.05012.39
5.4.260.0110.05112.39
5.4.250.0100.04912.39
5.4.240.0080.04812.39
5.4.230.0090.05112.38
5.4.220.0080.03512.38
5.4.210.0090.03712.38
5.4.200.0110.03812.38
5.4.190.0120.04212.38
5.4.180.0090.04112.38
5.4.170.0070.04112.38
5.4.160.0070.04212.38
5.4.150.0080.04712.38
5.4.140.0130.04212.07
5.4.130.0070.05112.05
5.4.120.0100.04512.02
5.4.110.0090.03612.01
5.4.100.0100.03712.01
5.4.90.0110.03612.01
5.4.80.0090.03912.01
5.4.70.0070.04412.01
5.4.60.0130.04812.01
5.4.50.0110.04812.01
5.4.40.0080.04311.99
5.4.30.0120.04511.99
5.4.20.0090.05011.98
5.4.10.0090.04711.99
5.4.00.0070.03811.49
5.3.290.0120.05212.80
5.3.280.0080.03812.71
5.3.270.0090.04212.72
5.3.260.0060.04412.72
5.3.250.0070.04212.72
5.3.240.0090.04012.72
5.3.230.0090.04212.71
5.3.220.0070.04312.68
5.3.210.0050.05812.68
5.3.200.0060.04012.68
5.3.190.0070.03712.68
5.3.180.0060.03912.67
5.3.170.0060.04212.66
5.3.160.0090.03912.67
5.3.150.0130.03912.67
5.3.140.0070.04512.66
5.3.130.0080.05012.65
5.3.120.0150.05012.66
5.3.110.0090.05512.66
5.3.100.0110.04512.12
5.3.90.0080.04112.08
5.3.80.0120.03612.07
5.3.70.0100.04112.07
5.3.60.0140.04412.06
5.3.50.0090.05412.00
5.3.40.0090.05012.00
5.3.30.0070.03911.95
5.3.20.0040.04211.72
5.3.10.0120.03611.70
5.3.00.0090.04311.68
5.2.170.0100.0399.18
5.2.160.0060.0319.18
5.2.150.0060.0339.18
5.2.140.0080.0349.18
5.2.130.0070.0389.14
5.2.120.0060.0419.14
5.2.110.0070.0399.14
5.2.100.0060.0409.14
5.2.90.0070.0339.14
5.2.80.0060.0359.14
5.2.70.0030.0339.14
5.2.60.0090.0339.09
5.2.50.0070.0299.05
5.2.40.0080.0279.04
5.2.30.0060.0429.02
5.2.20.0060.0329.00
5.2.10.0080.0268.93
5.2.00.0050.0308.78
5.1.60.0070.0238.07
5.1.50.0050.0278.06
5.1.40.0070.0238.05
5.1.30.0060.0288.40
5.1.20.0080.0348.42
5.1.10.0070.0368.14
5.1.00.0040.0318.14
5.0.50.0050.0236.62
5.0.40.0040.0216.48
5.0.30.0030.0366.29
5.0.20.0030.0216.27
5.0.10.0030.0216.24
5.0.00.0040.0336.23
4.4.90.0030.0164.77
4.4.80.0040.0164.76
4.4.70.0040.0154.76
4.4.60.0020.0184.75
4.4.50.0030.0174.77
4.4.40.0030.0264.70
4.4.30.0040.0174.76
4.4.20.0020.0184.84
4.4.10.0030.0184.84
4.4.00.0020.0274.76
4.3.110.0030.0184.66
4.3.100.0030.0164.66
4.3.90.0040.0204.63
4.3.80.0060.0314.59
4.3.70.0020.0174.63
4.3.60.0040.0154.62
4.3.50.0040.0184.63
4.3.40.0060.0264.54
4.3.30.0030.0163.29
4.3.20.0040.0163.26
4.3.10.0020.0203.22
4.3.00.0100.0236.84

preferences:
143.7 ms | 1394 KiB | 7 Q