3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = ['a' => 'A']; var_dump(array_map( "strtoupper", array_keys($array), $array);)

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)
5.4.350.0070.03912.02
5.4.340.0080.03412.01
5.4.320.0090.03912.50
5.4.310.0070.04512.49
5.4.300.0090.03812.50
5.4.290.0060.04012.49
5.4.280.0110.03812.39
5.4.270.0100.03612.39
5.4.260.0040.04512.39
5.4.250.0060.03912.39
5.4.240.0070.04012.39
5.4.230.0060.04412.38
5.4.220.0090.03512.38
5.4.210.0060.03512.38
5.4.200.0070.04712.38
5.4.190.0080.03712.38
5.4.180.0040.04112.38
5.4.170.0090.03712.38
5.4.160.0040.04512.38
5.4.150.0080.04212.38
5.4.140.0050.03912.07
5.4.130.0070.04012.05
5.4.120.0110.03612.01
5.4.110.0080.03512.01
5.4.100.0060.03512.01
5.4.90.0060.03912.01
5.4.80.0070.03512.01
5.4.70.0050.03912.01
5.4.60.0050.03612.01
5.4.50.0090.03512.00
5.4.40.0080.03512.00
5.4.30.0120.03011.99
5.4.20.0040.03711.98
5.4.10.0080.03312.00
5.4.00.0080.03811.49
5.3.290.0040.04212.80
5.3.280.0080.03712.71
5.3.270.0070.03812.73
5.3.260.0080.03712.72
5.3.250.0070.03712.72
5.3.240.0080.03612.72
5.3.230.0080.03712.71
5.3.220.0070.03712.68
5.3.210.0090.03812.68
5.3.200.0070.04412.68
5.3.190.0090.03612.68
5.3.180.0070.04312.67
5.3.170.0050.03912.67
5.3.160.0070.04012.67
5.3.150.0090.03912.68
5.3.140.0070.05412.66
5.3.130.0080.05212.66
5.3.120.0100.05012.66
5.3.110.0100.04912.66
5.3.100.0100.04612.12
5.3.90.0090.04512.08
5.3.80.0080.03412.07
5.3.70.0100.03412.08
5.3.60.0090.03512.06
5.3.50.0090.03612.00
5.3.40.0050.03812.00
5.3.30.0090.03311.95
5.3.20.0080.03411.73
5.3.10.0060.03611.70
5.3.00.0050.03911.68
5.2.170.0050.0319.18
5.2.160.0030.0319.18
5.2.150.0090.0319.18
5.2.140.0080.0319.18
5.2.130.0040.0309.14
5.2.120.0050.0329.14
5.2.110.0060.0339.15
5.2.100.0080.0289.14
5.2.90.0040.0309.14
5.2.80.0100.0269.14
5.2.70.0040.0359.14
5.2.60.0070.0319.08
5.2.50.0070.0359.05
5.2.40.0060.0339.03
5.2.30.0040.0329.01
5.2.20.0020.0349.00
5.2.10.0070.0328.93
5.2.00.0110.0338.78
5.1.60.0050.0268.06
5.1.50.0050.0268.06
5.1.40.0050.0268.04
5.1.30.0030.0328.40
5.1.20.0050.0278.42
5.1.10.0040.0288.14
5.1.00.0190.0408.14
5.0.50.0110.0316.62
5.0.40.0030.0276.48
5.0.30.0070.0406.30
5.0.20.0060.0336.27
5.0.10.0070.0276.24
5.0.00.0060.0406.23
4.4.90.0070.0184.78
4.4.80.0090.0334.75
4.4.70.0050.0224.75
4.4.60.0040.0224.75
4.4.50.0040.0204.77
4.4.40.0040.0304.71
4.4.30.0030.0164.76
4.4.20.0060.0144.85
4.4.10.0050.0154.85
4.4.00.0070.0224.76
4.3.110.0020.0194.67
4.3.100.0040.0144.66
4.3.90.0050.0144.63
4.3.80.0030.0254.59
4.3.70.0050.0154.63
4.3.60.0020.0154.63
4.3.50.0020.0154.63
4.3.40.0040.0254.54
4.3.30.0030.0173.29
4.3.20.0030.0153.26
4.3.10.0020.0163.22
4.3.00.0030.02010.98

preferences:
134.59 ms | 1394 KiB | 7 Q