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)
5.4.320.0070.04212.52
5.4.310.0090.04312.52
5.4.300.0090.04012.52
5.4.290.0040.04212.52
5.4.280.0060.03512.41
5.4.270.0030.04012.41
5.4.260.0080.04012.41
5.4.250.0060.04812.41
5.4.240.0080.03912.41
5.4.230.0070.03612.41
5.4.220.0040.04412.41
5.4.210.0040.03712.41
5.4.200.0040.03912.41
5.4.190.0080.03412.40
5.4.180.0030.04112.40
5.4.170.0060.03612.41
5.4.160.0080.03312.41
5.4.150.0030.03812.40
5.4.140.0060.04512.09
5.4.130.0060.03712.07
5.4.120.0030.03812.03
5.4.110.0080.03312.03
5.4.100.0060.03412.02
5.4.90.0070.03612.03
5.4.80.0060.03712.03
5.4.70.0050.04012.02
5.4.60.0050.03512.02
5.4.50.0060.04112.02
5.4.40.0080.03412.01
5.4.30.0090.03712.01
5.4.20.0090.03212.01
5.4.10.0060.03612.01
5.4.00.0080.03411.50
5.3.290.0090.05112.80
5.3.280.0050.03812.71
5.3.270.0080.03712.73
5.3.260.0080.03612.72
5.3.250.0060.04412.72
5.3.240.0060.04212.72
5.3.230.0080.03812.71
5.3.220.0070.03912.68
5.3.210.0050.04012.68
5.3.200.0060.03712.68
5.3.190.0090.03512.67
5.3.180.0080.03512.67
5.3.170.0030.04012.66
5.3.160.0030.04012.67
5.3.150.0050.04112.67
5.3.140.0050.03712.66
5.3.130.0070.03812.66
5.3.120.0100.03812.66
5.3.110.0060.03812.66
5.3.100.0070.03812.12
5.3.90.0080.03512.11
5.3.80.0090.03712.09
5.3.70.0080.03412.09
5.3.60.0060.03812.08
5.3.50.0060.03612.02
5.3.40.0080.03512.02
5.3.30.0050.03611.98
5.3.20.0100.03011.76
5.3.10.0050.03611.73
5.3.00.0070.03811.71
5.2.170.0070.0289.21
5.2.160.0050.0349.21
5.2.150.0070.0289.21
5.2.140.0060.0289.21
5.2.130.0080.0269.17
5.2.120.0030.0309.17
5.2.110.0040.0309.17
5.2.100.0030.0319.18
5.2.90.0060.0279.18
5.2.80.0060.0309.17
5.2.70.0030.0319.17
5.2.60.0060.0299.12
5.2.50.0000.0359.09
5.2.40.0060.0279.07
5.2.30.0070.0379.04
5.2.20.0070.0269.04
5.2.10.0050.0288.94
5.2.00.0050.0288.81
5.1.60.0070.0218.08
5.1.50.0030.0268.09
5.1.40.0060.0348.06
5.1.30.0070.0278.42
5.1.20.0050.0268.43
5.1.10.0030.0298.16
5.1.00.0060.0288.16
5.0.50.0040.0206.63
5.0.40.0040.0206.49
5.0.30.0030.0316.30
5.0.20.0040.0246.28
5.0.10.0060.0226.25
5.0.00.0040.0306.24
4.4.90.0030.0144.78
4.4.80.0030.0154.75
4.4.70.0030.0154.75
4.4.60.0020.0234.76
4.4.50.0010.0174.77
4.4.40.0030.0244.71
4.4.30.0030.0194.76
4.4.20.0020.0204.84
4.4.10.0020.0194.85
4.4.00.0060.0314.76
4.3.110.0060.0154.67
4.3.100.0040.0164.66
4.3.90.0030.0214.63
4.3.80.0040.0274.58
4.3.70.0030.0164.63
4.3.60.0020.0164.63
4.3.50.0030.0194.63
4.3.40.0050.0264.54
4.3.30.0020.0173.30
4.3.20.0040.0143.28
4.3.10.0030.0153.24
4.3.00.0070.0177.18

preferences:
169 ms | 1398 KiB | 7 Q