3v4l.org

run code in 300+ PHP versions simultaneously
<?php $obj = (object)array(123a => '456'); print_r($obj); if (!property_exists($obj,123a)) { echo '123a does not exist',"\n"; } echo !isset($obj->{123a})? '123a is null' : $obj->{'123a'}; echo "\n";

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)
5.4.340.0050.03412.01
5.4.320.0050.03712.50
5.4.310.0050.03812.49
5.4.300.0060.03512.50
5.4.290.0050.03912.49
5.4.280.0060.03412.39
5.4.270.0060.04012.39
5.4.260.0030.03812.39
5.4.250.0070.04512.39
5.4.240.0080.03312.39
5.4.230.0080.04112.38
5.4.220.0060.03412.38
5.4.210.0080.03312.38
5.4.200.0090.03512.38
5.4.190.0080.05112.38
5.4.180.0080.03212.38
5.4.170.0060.03412.39
5.4.160.0070.03912.38
5.4.150.0080.03812.38
5.4.140.0080.04512.07
5.4.130.0110.03512.05
5.4.120.0060.03412.02
5.4.110.0050.03512.02
5.4.100.0050.03412.01
5.4.90.0080.03512.01
5.4.80.0060.03712.01
5.4.70.0080.03212.00
5.4.60.0080.03212.00
5.4.50.0110.02912.00
5.4.40.0070.03311.99
5.4.30.0070.03411.99
5.4.20.0060.03511.98
5.4.10.0050.03412.00
5.4.00.0050.03611.49
5.3.290.0120.03312.80
5.3.280.0060.03912.71
5.3.270.0100.04012.72
5.3.260.0110.03112.72
5.3.250.0100.04212.72
5.3.240.0040.04512.72
5.3.230.0110.03212.71
5.3.220.0040.03712.68
5.3.210.0050.04012.68
5.3.200.0070.04012.68
5.3.190.0080.04212.68
5.3.180.0100.03212.68
5.3.170.0080.03712.67
5.3.160.0060.04112.67
5.3.150.0050.04312.67
5.3.140.0100.03012.66
5.3.130.0080.04112.66
5.3.120.0080.03912.66
5.3.110.0100.03412.66
5.3.100.0060.03612.12
5.3.90.0050.03712.08
5.3.80.0050.03512.07
5.3.70.0050.03612.08
5.3.60.0080.04012.06
5.3.50.0060.04812.00
5.3.40.0030.03912.00
5.3.30.0080.03311.95
5.3.20.0070.03411.73
5.3.10.0060.03611.70
5.3.00.0040.03711.68
5.2.170.0050.0299.18
5.2.160.0050.0289.18
5.2.150.0070.0279.18
5.2.140.0020.0329.18
5.2.130.0040.0299.14
5.2.120.0020.0309.14
5.2.110.0050.0289.15
5.2.100.0060.0309.14
5.2.90.0070.0259.14
5.2.80.0070.0329.14
5.2.70.0050.0379.14
5.2.60.0070.0339.09
5.2.50.0070.0339.06
5.2.40.0070.0289.04
5.2.30.0050.0279.02
5.2.20.0080.0269.00
5.2.10.0060.0278.92
5.2.00.0030.0298.78
5.1.60.0060.0308.07
5.1.50.0040.0258.06
5.1.40.0030.0288.05
5.1.30.0030.0278.40
5.1.20.0030.0278.42
5.1.10.0050.0248.14
5.1.00.0080.0278.14
5.0.50.0050.0196.62
5.0.40.0040.0266.48
5.0.30.0050.0286.29
5.0.20.0000.0226.26
5.0.10.0040.0186.24
5.0.00.0050.0286.23
4.4.90.0030.0244.77
4.4.80.0060.0254.76
4.4.70.0030.0164.76
4.4.60.0020.0164.75
4.4.50.0030.0144.77
4.4.40.0030.0244.71
4.4.30.0050.0224.76
4.4.20.0050.0134.84
4.4.10.0030.0154.85
4.4.00.0010.0264.76
4.3.110.0030.0144.66
4.3.100.0040.0134.67
4.3.90.0030.0144.64
4.3.80.0070.0274.59
4.3.70.0010.0154.63
4.3.60.0030.0134.63
4.3.50.0020.0154.62
4.3.40.0020.0244.54
4.3.30.0040.0223.28
4.3.20.0020.0163.27
4.3.10.0020.0163.22
4.3.00.0100.0277.50

preferences:
144.83 ms | 1386 KiB | 7 Q