3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [ 'deep' => [ 'bar' => 'foo', ], ]; foreach($arr['deep'] ?? [] as &$value) { $value = 'x'; } var_dump('x' === $arr['deep']['bar']); foreach($arr['deep'] as &$value) { $value = 'x'; } var_dump('x' === $arr['deep']['bar']);

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)
8.3.60.0110.00716.50
8.3.50.0110.00716.73
8.3.40.0110.00421.86
8.3.30.0110.00418.81
8.3.20.0040.00424.18
8.3.10.0040.00424.66
8.3.00.0060.00326.16
8.2.180.0070.01118.43
8.2.170.0110.00722.96
8.2.160.0030.01022.96
8.2.150.0040.00425.66
8.2.140.0070.00024.66
8.2.130.0040.00426.16
8.2.120.0080.00019.01
8.2.110.0030.00622.26
8.2.100.0090.00319.04
8.2.90.0040.00417.75
8.2.80.0000.00919.29
8.2.70.0050.00517.75
8.2.60.0000.00817.50
8.2.50.0040.00417.93
8.2.40.0000.00819.47
8.2.30.0160.00017.62
8.2.20.0040.00417.63
8.2.10.0140.00317.62
8.2.00.0060.01017.62
8.1.280.0140.00425.92
8.1.270.0040.00424.66
8.1.260.0070.00026.35
8.1.250.0080.00028.09
8.1.240.0090.00022.48
8.1.230.0070.00419.08
8.1.220.0030.00517.77
8.1.210.0030.00618.77
8.1.200.0000.00817.35
8.1.190.0040.00417.35
8.1.180.0080.00418.10
8.1.170.0050.00217.62
8.1.160.0110.00617.62
8.1.150.0140.00317.62
8.1.140.0160.00017.62
8.1.130.0130.00217.62
8.1.120.0050.01117.62
8.1.110.0170.00017.62
8.1.100.0160.00317.62
8.1.90.0160.00017.62
8.1.80.0050.01017.62
8.1.70.0090.00917.62
8.1.60.0150.00417.62
8.1.50.0090.00917.62
8.1.40.0100.01017.62
8.1.30.0140.00317.62
8.1.20.0090.01217.62
8.1.10.0110.00817.62
8.1.00.0120.00617.62
8.0.300.0000.00819.63
8.0.290.0000.00716.58
8.0.280.0030.01317.62
8.0.270.0120.00417.62
8.0.260.0070.01017.62
8.0.250.0110.00417.62
8.0.240.0170.00017.62
8.0.230.0080.00817.62
8.0.220.0140.00317.62
8.0.210.0090.00717.62
8.0.200.0080.00817.62
8.0.190.0130.00317.62
8.0.180.0040.01217.62
8.0.170.0140.00217.62
8.0.160.0130.00317.62
8.0.150.0110.00517.62
8.0.140.0100.00717.62
8.0.130.0140.00317.62
8.0.120.0170.00017.62
8.0.110.0120.00517.62
8.0.100.0120.00617.62
8.0.90.0150.00517.62
8.0.80.0090.00917.62
8.0.70.0110.00517.62
8.0.60.0160.00017.62
8.0.50.0080.00817.62
8.0.30.0110.00517.62
8.0.20.0080.00817.62
8.0.10.0070.00717.62

preferences:
31.65 ms | 400 KiB | 5 Q