3v4l.org

run code in 300+ PHP versions simultaneously
<?php function userland_func_get_arg($idx) { return isset(debug_backtrace()[1]['args'][$idx]) ? debug_backtrace()[1]['args'][$idx] : false; } function foo() { $a = func_get_arg(0); $a = 'bar'; } function bar() { $a userland_func_get_arg(0); $a = 'bar'; } $foo = 'foo'; var_dump(foo($foo, 'bar')); var_dump($foo); $foo = 'foo'; var_dump(bar($foo, 'bar')); var_dump($foo);

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)
5.4.320.0070.03612.52
5.4.310.0110.03612.52
5.4.300.0100.03312.53
5.4.290.0050.03912.52
5.4.280.0070.03412.42
5.4.270.0070.03512.42
5.4.260.0080.03512.42
5.4.250.0050.03912.41
5.4.240.0080.03812.41
5.4.230.0060.04612.41
5.4.220.0020.05112.41
5.4.210.0080.04012.41
5.4.200.0110.04512.41
5.4.190.0050.03712.41
5.4.180.0080.04112.40
5.4.170.0060.03712.41
5.4.160.0070.03912.41
5.4.150.0070.03412.40
5.4.140.0060.03712.09
5.4.130.0080.03812.07
5.4.120.0090.03112.04
5.4.110.0100.03412.04
5.4.100.0050.04512.03
5.4.90.0050.03612.04
5.4.80.0090.03812.04
5.4.70.0050.03812.03
5.4.60.0040.03612.04
5.4.50.0070.03412.03
5.4.40.0110.03112.02
5.4.30.0040.04012.02
5.4.20.0030.04112.02
5.4.10.0030.03712.01
5.4.00.0070.04111.51
5.3.290.0100.04012.80
5.3.280.0080.03612.71
5.3.270.0070.03812.72
5.3.260.0060.04412.72
5.3.250.0060.04012.72
5.3.240.0110.03612.72
5.3.230.0050.03812.70
5.3.220.0060.04012.68
5.3.210.0100.03712.68
5.3.200.0090.04912.68
5.3.190.0060.03812.68
5.3.180.0070.03712.68
5.3.170.0070.03612.67
5.3.160.0060.04312.68
5.3.150.0080.03612.67
5.3.140.0100.03312.66
5.3.130.0050.03912.65
5.3.120.0050.03812.66
5.3.110.0080.04012.66
5.3.100.0060.03712.12
5.3.90.0040.03712.10
5.3.80.0080.03712.09
5.3.70.0080.03312.09
5.3.60.0080.04312.07
5.3.50.0150.03312.02
5.3.40.0150.04012.02
5.3.30.0050.03911.98
5.3.20.0090.03311.76
5.3.10.0060.03411.73
5.3.00.0070.04111.71
5.2.170.0090.0339.21
5.2.160.0060.0329.21
5.2.150.0070.0319.21
5.2.140.0070.0349.21
5.2.130.0030.0319.18
5.2.120.0060.0319.17
5.2.110.0050.0329.18
5.2.100.0050.0299.17
5.2.90.0060.0279.17
5.2.80.0050.0319.17
5.2.70.0070.0329.17
5.2.60.0140.0299.12
5.2.50.0070.0289.09
5.2.40.0070.0399.07
5.2.30.0010.0329.05
5.2.20.0050.0299.04
5.2.10.0060.0308.95
5.2.00.0080.0338.81
5.1.60.0050.0328.09
5.1.50.0070.0348.08
5.1.40.0040.0288.06
5.1.30.0050.0288.42
5.1.20.0040.0268.43
5.1.10.0040.0278.16
5.1.00.0050.0258.16
5.0.50.0010.0256.63
5.0.40.0060.0196.49
5.0.30.0020.0376.31
5.0.20.0050.0186.28
5.0.10.0040.0246.25
5.0.00.0030.0326.25
4.4.90.0050.0144.78
4.4.80.0050.0194.75
4.4.70.0030.0154.75
4.4.60.0020.0164.75
4.4.50.0030.0154.77
4.4.40.0030.0274.71
4.4.30.0060.0214.76
4.4.20.0030.0224.84
4.4.10.0030.0194.85
4.4.00.0040.0264.76
4.3.110.0050.0194.67
4.3.100.0050.0144.66
4.3.90.0040.0174.64
4.3.80.0040.0274.58
4.3.70.0050.0134.63
4.3.60.0020.0184.63
4.3.50.0040.0204.63
4.3.40.0020.0254.54
4.3.30.0040.0153.30
4.3.20.0030.0153.28
4.3.10.0030.0193.24
4.3.00.0030.01716.50

preferences:
142.14 ms | 1386 KiB | 7 Q