3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump('list'); $a = ['foo']; var_dump(json_encode($a)); unset($a[0]); var_dump(json_encode($a)); var_dump('dict'); $a = ['bar' => 'foo']; var_dump(json_encode($a)); unset($a['bar']); var_dump(json_encode($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)
8.5.10.0100.00819.71
8.5.00.0090.01120.09
8.4.160.0130.00223.75
8.4.150.0030.00014.05
8.4.140.0130.00817.42
8.4.130.0080.01117.43
8.4.120.0110.00420.58
8.4.110.0080.01218.77
8.4.100.0070.00217.90
8.4.90.0110.00517.89
8.4.80.0090.01117.59
8.4.70.0120.00917.84
8.4.60.0110.00917.64
8.4.50.0110.00618.90
8.4.40.0100.01017.25
8.4.30.0030.01224.29
8.4.20.0070.00419.65
8.4.10.0070.01319.10
8.3.290.0080.00120.83
8.3.280.0110.01018.31
8.3.270.0070.01416.78
8.3.260.0090.01116.60
8.3.250.0120.00718.73
8.3.240.0100.00916.49
8.3.230.0080.01016.41
8.3.220.0140.00517.21
8.3.210.0060.01216.78
8.3.200.0100.00916.41
8.3.190.0090.00917.25
8.3.180.0090.01018.99
8.3.170.0140.00417.07
8.3.160.0110.00718.34
8.3.150.0140.00417.19
8.3.140.0050.00316.54
8.3.130.0000.00916.73
8.3.120.0030.00620.66
8.3.110.0090.00918.00
8.3.100.0130.00918.25
8.3.90.0160.00618.09
8.3.80.0180.00416.57
8.3.70.0160.01016.34
8.3.60.0240.00016.47
8.3.50.0150.00718.41
8.3.40.0090.00917.41
8.3.30.0090.00917.29
8.3.20.0180.00017.33
8.3.10.0060.01217.13
8.3.00.0060.00619.11
8.2.300.0110.00922.18
8.2.290.0080.00220.38
8.2.280.0090.01016.70
8.2.270.0110.00717.42
8.2.260.0070.00417.35
8.2.250.0060.01217.04
8.2.240.0130.00616.39
8.2.230.0160.00316.19
8.2.220.0170.00316.53
8.2.210.0190.00016.55
8.2.200.0180.00418.36
8.2.190.0120.00916.06
8.2.180.0190.00016.25
8.2.170.0150.00517.69
8.2.160.0180.00417.15
8.2.150.0140.00517.43
8.2.140.0210.00017.24
8.2.130.0190.00017.26
8.2.120.0120.00917.24
8.2.110.0090.01317.20
8.2.100.0140.00717.18
8.2.90.0170.00317.35
8.2.80.0150.00617.38
8.2.70.0250.00017.45
8.2.60.0110.01117.34
8.2.50.0150.00517.36
8.2.40.0120.00717.35
8.2.30.0140.00517.14
8.2.20.0140.00517.26
8.2.10.0130.00517.19
8.2.00.0130.00617.35
8.1.340.0070.01417.46
8.1.330.0070.01016.79
8.1.320.0120.00716.16
8.1.310.0050.00316.84
8.1.300.0090.00916.04
8.1.290.0190.00017.52
8.1.280.0160.00316.00
8.1.270.0170.00417.02
8.1.260.0130.00918.83
8.1.250.0160.00417.10
8.1.240.0190.00017.11
8.1.230.0140.00417.08
8.1.220.0140.00517.11
8.1.210.0130.00416.83
8.1.200.0130.00516.82
8.1.190.0160.00316.93
8.1.180.0180.00016.96
8.1.170.0120.00617.05
8.1.160.0110.00617.17
8.1.150.0130.00617.05
8.1.140.0140.00516.95
8.1.130.0170.00317.26
8.1.120.0190.00017.03
8.1.110.0190.00016.92
8.1.100.0150.00417.03
8.1.90.0180.00417.02
8.1.80.0150.00317.28
8.1.70.0200.00017.08
8.1.60.0160.00616.97
8.1.50.0180.00417.30
8.1.40.0200.00317.30
8.1.30.0170.00417.14
8.1.20.0100.01017.26
8.1.10.0130.01017.22
8.1.00.0230.00017.21

preferences:
30.39 ms | 403 KiB | 5 Q