3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1=>'a', 'a' => 'b', 'a' => 'b'); //unset($a[4]); //unset($a[5]); ///$a[4] = 'clement'; // //array_push($a, 'c'); array_ushift($, '1'); var_dump($a);

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)
5.4.320.0070.03912.50
5.4.310.0080.03612.49
5.4.300.0060.03512.50
5.4.290.0020.04112.49
5.4.280.0040.03612.39
5.4.270.0060.03612.39
5.4.260.0050.03812.39
5.4.250.0020.04012.39
5.4.240.0060.03612.39
5.4.230.0040.03912.38
5.4.220.0080.03312.38
5.4.210.0070.03912.38
5.4.200.0070.03512.38
5.4.190.0050.03512.38
5.4.180.0070.03512.38
5.4.170.0060.03512.38
5.4.160.0070.03412.38
5.4.150.0080.03312.38
5.4.140.0050.03712.07
5.4.130.0070.03412.05
5.4.120.0050.03512.02
5.4.110.0060.03412.01
5.4.100.0040.03712.02
5.4.90.0110.03112.01
5.4.80.0040.03912.01
5.4.70.0030.03712.01
5.4.60.0070.03312.00
5.4.50.0040.03612.01
5.4.40.0040.03612.00
5.4.30.0060.03612.00
5.4.20.0070.03311.98
5.4.10.0110.03311.99
5.4.00.0040.03711.48
5.3.290.0080.03612.80
5.3.280.0060.03712.71
5.3.270.0120.03312.72
5.3.260.0020.04212.72
5.3.250.0070.03612.72
5.3.240.0050.03712.72
5.3.230.0080.03412.71
5.3.220.0060.03612.68
5.3.210.0040.04012.68
5.3.200.0060.03512.68
5.3.190.0050.03712.68
5.3.180.0060.03512.67
5.3.170.0060.04112.67
5.3.160.0080.03912.68
5.3.150.0050.04212.68
5.3.140.0060.03612.66
5.3.130.0070.03812.65
5.3.120.0090.03612.65
5.3.110.0070.03812.66
5.3.100.0100.03312.12
5.3.90.0080.03512.09
5.3.80.0060.03712.07
5.3.70.0070.03412.07
5.3.60.0080.03412.06
5.3.50.0070.03512.00
5.3.40.0030.04412.00
5.3.30.0050.03911.95
5.3.20.0070.03411.73
5.3.10.0040.03611.70
5.3.00.0090.03311.69
5.2.170.0080.0279.18
5.2.160.0030.0319.18
5.2.150.0060.0309.18
5.2.140.0050.0399.18
5.2.130.0030.0329.14
5.2.120.0080.0269.14
5.2.110.0050.0299.14
5.2.100.0030.0309.14
5.2.90.0040.0299.14
5.2.80.0040.0319.14
5.2.70.0040.0329.14
5.2.60.0020.0379.09
5.2.50.0030.0319.06
5.2.40.0060.0299.04
5.2.30.0070.0279.02
5.2.20.0030.0309.00
5.2.10.0060.0278.93
5.2.00.0050.0288.78
5.1.60.0030.0258.06
5.1.50.0070.0248.07
5.1.40.0060.0338.04
5.1.30.0060.0248.40
5.1.20.0050.0268.41
5.1.10.0030.0278.14
5.1.00.0030.0358.14
5.0.50.0070.0226.62
5.0.40.0040.0236.48
5.0.30.0040.0306.29
5.0.20.0020.0206.27
5.0.10.0020.0206.24
5.0.00.0040.0316.23
4.4.90.0040.0144.78
4.4.80.0010.0204.75
4.4.70.0020.0174.75
4.4.60.0060.0134.76
4.4.50.0070.0124.77
4.4.40.0040.0244.71
4.4.30.0040.0154.76
4.4.20.0010.0174.84
4.4.10.0040.0144.85
4.4.00.0050.0224.76
4.3.110.0020.0164.67
4.3.100.0010.0164.66
4.3.90.0040.0174.64
4.3.80.0050.0224.58
4.3.70.0010.0164.63
4.3.60.0020.0154.63
4.3.50.0040.0144.62
4.3.40.0020.0254.54
4.3.30.0010.0173.29
4.3.20.0050.0133.27
4.3.10.0030.0153.22
4.3.00.0300.03016.50

preferences:
144.08 ms | 1394 KiB | 7 Q