3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x= array( 'a' => 'aaaaaa', 'b' => 'bbbbbb', 'c' => 'cccccc', 'arr' => array( 'a1' => 'aaa111', 'b2' => 'bbb222', ); ); array_walk_recursive( $x, function ( &$element, $key ) { if ( $key == 'a1' ) unset($element); } ); var_dump($x);

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)
5.4.350.0090.03612.01
5.4.340.0070.03812.01
5.4.320.0100.05512.50
5.4.310.0160.07112.49
5.4.300.0090.04612.50
5.4.290.0090.04212.49
5.4.280.0110.05512.39
5.4.270.0070.05512.39
5.4.260.0060.05212.39
5.4.250.0110.03612.39
5.4.240.0040.03812.39
5.4.230.0040.04012.38
5.4.220.0080.03712.38
5.4.210.0080.04312.38
5.4.200.0090.04012.38
5.4.190.0040.04112.38
5.4.180.0050.03812.38
5.4.170.0080.03812.38
5.4.160.0050.04012.38
5.4.150.0130.03412.38
5.4.140.0090.04512.07
5.4.130.0050.05512.05
5.4.120.0090.04112.01
5.4.110.0080.05012.01
5.4.100.0080.03912.01
5.4.90.0110.04912.01
5.4.80.0050.04512.01
5.4.70.0070.03812.01
5.4.60.0070.03512.00
5.4.50.0050.04112.00
5.4.40.0130.03412.00
5.4.30.0060.03711.99
5.4.20.0080.03611.98
5.4.10.0060.03911.99
5.4.00.0070.04711.49
5.3.290.0060.04212.80
5.3.280.0060.04312.71
5.3.270.0080.04812.73
5.3.260.0090.04012.72
5.3.250.0080.03912.72
5.3.240.0120.03612.72
5.3.230.0090.04312.71
5.3.220.0110.04412.68
5.3.210.0090.04112.68
5.3.200.0060.04412.68
5.3.190.0060.03912.67
5.3.180.0090.03512.67
5.3.170.0100.03512.67
5.3.160.0070.03812.68
5.3.150.0100.03512.67
5.3.140.0060.03712.66
5.3.130.0060.04312.66
5.3.120.0090.04312.65
5.3.110.0070.05012.66
5.3.100.0100.04112.12
5.3.90.0060.04012.08
5.3.80.0030.04112.08
5.3.70.0070.03512.08
5.3.60.0090.03912.06
5.3.50.0050.03912.00
5.3.40.0030.04612.00
5.3.30.0090.04011.95
5.3.20.0080.03911.73
5.3.10.0090.03511.70
5.3.00.0080.03711.68
5.2.170.0060.0389.18
5.2.160.0080.0289.18
5.2.150.0080.0389.18
5.2.140.0040.0439.18
5.2.130.0120.0359.14
5.2.120.0080.0359.14
5.2.110.0050.0369.14
5.2.100.0050.0289.14
5.2.90.0070.0279.14
5.2.80.0050.0329.14
5.2.70.0050.0319.14
5.2.60.0050.0379.09
5.2.50.0080.0379.06
5.2.40.0120.0339.04
5.2.30.0050.0429.02
5.2.20.0090.0309.00
5.2.10.0070.0278.93
5.2.00.0040.0308.78
5.1.60.0080.0228.07
5.1.50.0050.0258.07
5.1.40.0070.0258.05
5.1.30.0070.0258.40
5.1.20.0050.0268.42
5.1.10.0020.0318.14
5.1.00.0030.0288.14
5.0.50.0060.0206.63
5.0.40.0050.0196.48
5.0.30.0040.0326.29
5.0.20.0030.0216.26
5.0.10.0040.0226.24
5.0.00.0030.0336.23
4.4.90.0010.0184.78
4.4.80.0030.0154.75
4.4.70.0050.0144.76
4.4.60.0020.0174.75
4.4.50.0070.0224.77
4.4.40.0040.0334.71
4.4.30.0040.0144.76
4.4.20.0040.0174.84
4.4.10.0030.0194.85
4.4.00.0060.0254.75
4.3.110.0040.0164.66
4.3.100.0010.0174.66
4.3.90.0030.0154.63
4.3.80.0010.0264.58
4.3.70.0080.0144.63
4.3.60.0040.0164.63
4.3.50.0020.0184.63
4.3.40.0050.0224.54
4.3.30.0030.0173.29
4.3.20.0020.0183.27
4.3.10.0040.0163.22
4.3.00.0170.0206.70

preferences:
140.19 ms | 1394 KiB | 7 Q